If the temperature of reaction medium increases above the optimum temperature, then _______?

Federal Mock 3
Chemistry
Macromolecules
A) It increases the enzyme activity
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B) Stops the reaction
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C) Decreases the enzyme activity
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D) Both Options B and C are correct
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Carboxylic acids are produced by the oxidation of _______?

Federal Mock 3
Chemistry
Carboxylic Acids and its Derivatives
A) Alcohol
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B) Aldehyde
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C) Ketone
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D) All of these options are correct
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Oxidation number of an element in free state is:

Federal Mock 3
Chemistry
Electrochemistry
Oxidation Number or State
A) +1
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B) +2
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C) 0
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D) -1
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Addition of a second electron to a uni-negative ion is always _______?

Federal Mock 3
Chemistry
Chemical Bonding
Electron Affinity and Electronegativity
A) An endothermic process
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B) An exothermic process
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C) Neutral process
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D) Energy wasted
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If a molecule MX3 has zero dipole moment, the sigma bonding orbitals used by M are:

Federal Mock 3
Chemistry
Chemical Bonding
VSEPR Theory
A) Pure p
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B) sp hybrids
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C) sp2 hybrids
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D) sp3 hybrids
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Which of the following statements is true?

Federal Mock 3
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Alkali metal hydroxides are stable to heat except LiOH
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B) CaOH is a stronger base than NaOH
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C) When NaOH is made the gas released at the cathode is C12
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D) NaOH is named as caustic soda because it reacts with fats to form soap.
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Example of nucleophile is:

Federal Mock 3
Chemistry
Fundamental Principles of Organic Chemistry
Introduction to Fundamental Principles of Organic Chemistry
A) BF3
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B) SO3
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C) AlCl3
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D) CN
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Metals belonging to the same group in the periodic table are:

Federal Mock 3
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Magnesium and Sodium
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B) Magnesium and Copper
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C) Magnesium and Barium
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D) Magnesium and Potassium
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How many chain isomer can be obtained from alkane C6H14 :

Federal Mock 3
Chemistry
Hydrocarbons
Alkanes and Paraffins
A) 7
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B) 6
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C) 5
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D) 4
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The second and third period contain:

Federal Mock 3
Biology
Periodicity in Elements
Introduction to the Periodic Table
A) 18 elements each
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B) 32 elements each
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C) 8 elements each
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D) 14 elements each
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Which class of halogenoalkane can react with alkali by an SN2 mechanism?

Federal Mock 3
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) Primary and secondary
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B) Secondary and tertiary
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C) Primary and tertiary
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D) Primary, secondary and tertiary
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Fossil fuels are produced due to ______ ?

Federal Mock 3
Chemistry
Fundamental Principles of Organic Chemistry
Introduction to Fundamental Principles of Organic Chemistry
A) Fast decomposition of organic matter
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B) Decomposition of plants
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C) Decomposition of animals
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D) Biochemical decomposition of dead organic matter
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On hydrogen atom spectrum, series of spectral lines which fall within visible region, is:

Federal Mock 3
Chemistry
Atomic Structure
A) Lymen series
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B) Balmer Series
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C) Paschen series
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D) Bracket series
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How many moles of CO2 contain 16g of oxygen?

Federal Mock 3
Chemistry
Stoichiometry
Mole
A) 5 mol
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B) 16 mol
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C) 0.5 mol
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D) 2 mol
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Which of the following represents the equation for the reaction between ethane and chlorine in the presence of UV radiation?

Federal Mock 3
Chemistry
Hydrocarbons
A) C2H4 + Cl2 -> C2H2Cl2 + H2
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B) C2H4 + Cl2 -> C2H3Cl + HCl
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C) C2H4 + Cl2 -> 2CH3Cl
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D) C2H4 + O2 -> 2CH2Cl + 2HCl
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Given the bond energy N ≡ N, N – H and H – H bonds are 945, 391, and 436 kJmol-1 respectively, the enthalpy of the reaction N2(g) + 3H2(g) -> 2NH3(g) is;

Federal Mock 3
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) -93 kJ
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B) 102 kJ
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C) 90 kJ
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D) 105 kJ.
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The shape of sulphate ion is:

Federal Mock 3
Chemistry
s and p Block Elements
A) Hexagonal
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B) Square planar
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C) Trigonal bipyramidal
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D) Tetrahedral
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Point out the property which is not characteristic of alkali metal:

Federal Mock 3
Chemistry
s and p Block Elements
General Behaviour of Alkali and Alkaline Earth Metals
A) Low electronegativity
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B) Low melting point
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C) Their ions are isoelectronic with noble gas
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D) High ionization energy
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The number of nitrogen atoms present in 160 amu of ammonium nitrate are:

Federal Mock 3
Chemistry
Stoichiometry
Mole
A) 4
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B) 5
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C) 6
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D) 8
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BH3 has H-B-H bond angles of 120˚ with a shape of:

Federal Mock 3
Chemistry
Chemical Bonding
VSEPR Theory
A) Linear
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B) Trigonal planar
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C) Tetrahedron
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D) Bent
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[Fe(CN)6]4- is called as ______?

Federal Mock 3
Chemistry
s and p Block Elements
A) Complex compound
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B) Transition element ion
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C) Anion
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D) Complex anion
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Diameter of an atom is in the range of?

Federal Mock 3
Chemistry
Atomic Structure
Bohrs Model of Atom
A) 0.2m
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B) 0.2 nm
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C) 2 x 10^-19nm
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D) 0.2 pm
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It is impossible for two electrons to have same value of spin quantum number in the same orbital, according to:

Federal Mock 3
Chemistry
Atomic Structure
A) Hund’s rule
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B) Aufbau principle
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C) Pauli’s exclusion principle
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D) All of the above options are correct
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Which compound is most ionic?

Federal Mock 3
Chemistry
Chemical Bonding
A) Li2O
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B) MgO
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C) AlF
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D) NaF
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In the electrolysis of molten ZnCl2, how much Zn can be deposited at the cathode by the passage of 0.01 ampere for one hour?

Federal Mock 3
Chemistry
Electrochemistry
Electrolysis
A) 0.002 g
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B) 0.123 g
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C) 0.012 g
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D) 0.004 g
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78 g of a hydrocarbon occupies 22.414 dm3 of volume at S.T.P. The empirical formula of the hydrocarbon is CH. The molecular formula of this hydrocarbon is:

Federal Mock 3
Chemistry
Introduction to Fundamental Concepts of Chemistry
Analysis of a Compound – Empirical And Molecular Formulas
A) C2H4
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B) C6H6
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C) C8H8
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D) C4H4
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Which quantum number tells shape of the orbital?

Federal Mock 3
Chemistry
Atomic Structure
A) Magnetic quantum number
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B) Spin quantum number
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C) Azimuthal quantum number
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D) Principle quantum number
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The current in electrolysis is carried through:

Federal Mock 3
Chemistry
Electrochemistry
Electrolysis
A) Free electrons
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B) Positive ions
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C) Negative ions
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D) Both Options B and C are correct
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Which of the following gives a free radical reaction when it reacts with alkanes?

Federal Mock 3
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) Nitric acid
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B) Oxygen
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C) Halogen
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D) All of these options are correct
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Magnesiums keep on burning in:

Federal Mock 3
Chemistry
s and p Block Elements
General Behaviour of Alkali and Alkaline Earth Metals
A) CO2
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B) Magnesium and Copper
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C) N2O
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D) N2 as well as CO2
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The evaporation of water is an example of?

Federal Mock 3
Chemistry
Thermochemistry
Spontaneous and Non-Spontaneous Reactions
A) Endothermic reaction
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B) Exothermic reaction
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C) Spontaneous reaction
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D) Chemical reaction
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Which class of the compounds is represented by the type formula ROR?

Federal Mock 3
Chemistry
Aldehydes and Ketones
Preparation of Aldehydes And Ketones
A) Esters
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B) Ethers
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C) Aldehydes
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D) Ketones
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Homocyclic hydrocarbons are further divided into:

Federal Mock 3
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) Alicyclic and aromatic
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B) Carbocyclic and heterocyclic
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C) Acyclic and heterocyclic
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D) Heterocyclic and aromatic
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A piston in a cylinder is a part of:

Federal Mock 3
Chemistry
Thermochemistry
System, Surrounding and State Function
A) System
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B) Surroundings
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C) Boundary
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D) None of these options are correct
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The oxidation number of iodine is periodic acid (H5IO6) is:

Federal Mock 3
Chemistry
Electrochemistry
Oxidation Number or State
A) +7
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B) +3
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C) +6
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D) +5
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A peptide having up to 10,000 amino acids is called as _______ ?

Federal Mock 3
Chemistry
Chemistry of Life
Proteins
A) Dipeptide
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B) Protein
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C) Polypeptide
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D) Peptide
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Formalin is an aqueous solution of:

Federal Mock 3
Chemistry
Aldehydes and Ketones
Identification and Uses of Carbonyl Compounds
A) Formic acid
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B) Formaldehyde
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C) Furfuraldehyde
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D) Acetone
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Oxidation of primary alcohol gives:

Federal Mock 3
Chemistry
Alcohol, Phenols, and Ethers
A) Ketone
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B) Aldehyde
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C) Ester
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D) Amide
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Which increases down the group for alkali metals?

Federal Mock 3
Chemistry
s and p Block Elements
General Behaviour of Alkali and Alkaline Earth Metals
A) Electron affinity
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B) Reactivity
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C) Ionisation energy
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D) All of the above options are correct
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The substance which conducts electricity by the movement of ions:

Federal Mock 3
Chemistry
s and p Block Elements
A) Graphite
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B) Copper
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C) Molten NaCl
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D) Mercury
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The maximum density of water is at:

Federal Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Liquids and Water
A) 2.98˚C
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B) 3.98 ˚C
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C) 4 ˚C
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D) 4.98 ˚C
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A carbonyl compound with molecular formula C5H10O reacted with iodine in an alkaline solution to give a pale yellow precipitate with an antiseptic smell.

The carbonyl compound is:

Federal Mock 3
Chemistry
Aldehydes and Ketones
Identification and Uses of Carbonyl Compounds
A) CH3CH2CH3CH3CHO
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B) CH3CH2CH2COCH3
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C) CH3CH2CH(CH3)CHO
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D) CH3CH2COCH2CH3
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Ideal gas equation is:

Federal Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids
Gas Laws and General Gas Equation
A) P = nRT
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B) PV = RT
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C) V = nRTP
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D) PV = nRT
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Which one of the following is not a secondary alkyl halide?

Federal Mock 3
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) 2-Chloropropane
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B) 3-Bromobutane
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C) 2,3,dichloropentane
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D) 2-chloro,2-methyl pentane
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Electron affinity decreases down the group due to:

Federal Mock 3
Chemistry
Chemical Bonding
Electron Affinity and Electronegativity
A) Increase in atomic radius
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B) Decrease in atomic radius
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C) Increase in electronegativity
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D) All of the above options are correct
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Why does Cr show 3d54s1 configuration instead of 3d44s2?

Federal Mock 3
Chemistry
d and f Block Elements
A) Because it is transition element
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B) Because it shows different oxidation states
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C) Because of extra stability of half filled d5 system
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D) Because it is typical transition element
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Which contains sp2 hybridization?

Federal Mock 3
Chemistry
Fundamental Principles of Organic Chemistry
A) Methane
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B) Ethane
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C) Alkyne
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D) None of these options are correct
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The strength of London forces depends on the size of:

Federal Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids
A) Electrons
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B) Electronic cloud
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C) Lone pair on an atom
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D) Poles of atoms
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The number of electrons in the p subshell is:

Federal Mock 3
Chemistry
Atomic Structure
A) 2
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B) 14
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C) 10
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D) 6
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For which equilibrium does Kchas no unit?

Federal Mock 3
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) C(s) + H2O(g) -> CO(g) + H2(g)
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B) CH3O(l) + CH3CO2H(l) -> CH2CO2CH2(l) + H2O (l)
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C) Cu2+(aq) + 4NH2(aq) -> Cu(NH2)23+ (aq)
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D) N2O4(g) -> 2NO2
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Identify the correct statement:

Federal Mock 3
Chemistry
s and p Block Elements
A) Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl
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B) Elemental Na is a strong oxidizing agent
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C) Elemental Na is insoluble in NH3
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D) Elemental Na is easily oxidizing
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Element X is in group 3 and element Y is in group 6 of the periodic Table. Which of the following is the most likely formula of the compound formed when X and Y react together?

Federal Mock 3
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) X3Y2
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B) X3Y6
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C) X2Y3
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D) None of these
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Which one of the following has greater bond energy?

Federal Mock 3
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) HF
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B) HCl
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C) HBr
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D) HI
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Diamond is:

Federal Mock 3
Chemistry
s and p Block Elements
A) Covalent solid
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B) Molecular solid
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C) Metallic solid
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D) Ionic solid
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Vibrio cholera is an example of ______ type of bacteria.

Federal Mock 3
Biology
Kingdom Prokaryote
Shape of Bacteria
A) Cocci
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B) Bacilli
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C) Spirilla
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D) Commas
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Cell membrane of bacterial cell invaginates producing structure called:

Federal Mock 3
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Polysome
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B) Endosome
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C) Mesosome
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D) Centrosome
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Gigantism in human beings is caused due to over secretion of:

Federal Mock 3
Biology
Coordination and Control
Endocrine System and its Hormones
A) Thyrotropin
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B) Corticotropin
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C) Somatotropin
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D) Prolactin
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The DNA of the bacterium is present in a distinct region called:

Federal Mock 3
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Nucleolus
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B) Centrosome
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C) Nucleoid
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D) Nucleus
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Apparently which bacteria is more resistant to antibiotics?

Federal Mock 3
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Gram-positive bacteria
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B) Gram-negative bacteria
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C) Both Gram-negative and positive bacteria
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D) None of these options are correct
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These hormones perform antagonistic function EXCEPT:

Federal Mock 3
Biology
Coordination and Control
Endocrine System and its Hormones
A) Growth Hormone – Somatostatin
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B) Calcitonin – Parathyroid
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C) Adrenaline – Noradrenaline
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D) Insulin – Glucagon
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Right ventricle connects with lungs by:

Federal Mock 3
Biology
Transport
A) Aorta
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B) Pulmonary veins
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C) Pulmonary artery
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D) Dorsal aorta
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Four words are shown below:

Branchioceranthus – sexual reproduction – nutritive – Hydra

These words can be used in the spaces P, Q, R, and S to complete the sentence below:

The coelenterates range in size from microscopic ___P____ to macroscopic, ___Q____, a hydrozoan polyp that may reach two meters in length. Cnidarians are found in two basic forms: the polyps and the medusae. Polyps are cylindrical animals, which in most cases are ____R____ in function, hence named as gastrozooids. The medusae are umbrella-like in form. These are free-swimming. The medusae are involved in ____S____ as they have gonads.

Federal Mock 3
Biology
Kingdom Animalia
Grade Radiata & Grade Bilateria
A) Option A
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B) Option B
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C) Option C
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D) Option D
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Porins are present in:

Federal Mock 3
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria and golgi apparatus
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B) Mitochondria and chloroplast
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C) Mitochondria and ribosomes
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D) Golgi apparatus and chloroplast
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Intrinsic factor secreted by parietal cells of stomach mucosa helps in:

Federal Mock 3
Biology
Nutrition
Digestion and Absorption
A) Vitamin B12 absorption
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B) Protein digestion
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C) Carbohydrate breakdown
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D) Bowel movement
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At temperature higher than optimum, enzymatic activity decreases because of:

Federal Mock 3
Biology
A) Saturation
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B) Inhibition
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C) Denaturation
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D) Composition
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Which of the following ideas was not part of Charles Darwin’s theory of evolution by natural selection?

Federal Mock 3
Biology
Evolution
A) Organisms produce more off springs than the environment can support
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B) Variation between individuals arises by gene mutation
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C) Only those individuals best adapted by environment survive and reproduce
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D) Individuals compete for scarce resources
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Which statement about a triglyceride molecule are correct?

1. It always contains unsaturated hydrocarbon tails

2. It is formed using ester bonds

3. It does not form hydrogen bonds

4. It contains a hydrophilic glycerol head

Federal Mock 3
Biology
Biological Molecules
Lipids
A) 1, 2 and 3
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B) 2, 1 and 4
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C) 1 and 4 only
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D) 2 and 3 only
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Nictitating membrane is found in the _____ and performs _____function.

Federal Mock 3
Biology
Evolution
A) Eyes … cleaning
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B) Brain … thinking
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C) Feet … locomotion
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D) Bones … supporting
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A woman with normal colour vision, whose father was red green colour blind, married a red green colour blind man. What is the probability of her born child being red green colour blind?

Federal Mock 3
Biology
Variation and Genetics
Inherited Diseases
A) 1.0
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B) 0.75
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C) 0.50
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D) 0.25
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Hormones called gonadotropins are released by which gland?

Federal Mock 3
Biology
Coordination and Control
Endocrine System and its Hormones
A) Ovaries
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B) Hypothalamus
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C) Pituitary
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D) Testes
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Which of the following is found at the end of long bones, in the nose, larynx, and trachea?

Federal Mock 3
Biology
Gaseous Exchange
Respiratory System of Man
A) Elastic cartilage
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B) Fibrous cartilage
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C) Perichondrium
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D) Hyaline cartilage
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HIV-I protease is an enzyme produced by the HIV virus. Two identical chains of 99 amino acids form the enzyme. In each chain, amino acids 25, 25 and 27 in the sequence form part of the active site. Which orders of protein structure control the shape of the active site?

Federal Mock 3
Biology
Bio-diversity | Variety of Life
A) Primary, secondary, tertiary and quaternary
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B) Primary, secondary and tertiary only
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C) Primary and quaternary only
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D) Quaternary only
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Which substance might include this molecule?

Federal Mock 3
Biology
Biological Molecules
Lipids
A) Cellulose
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B) Cholesterol
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C) Glycerol
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D) Insulin
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Virus recognize host through:

Federal Mock 3
Biology
Bio-diversity | Variety of Life
A) Envelope
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B) DNA
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C) Capsid
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D) Protein Coat
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It is the smallest eukaryote:

Federal Mock 3
Biology
Bio-diversity | Variety of Life
A) Virus
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B) Bacteria
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C) Plasmodium
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D) Sponge
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A woman can be bald only when she is

Federal Mock 3
Biology
Variation and Genetics
Inherited Diseases
A) Homozygous dominant
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B) Heterozygous
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C) Homozygous recessive
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D) None of these
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Which of the following is NOT TRUE about interferons?

Federal Mock 3
Biology
Transport
Immunity and its types
A) Belong to cytokines
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B) Activate natural killer cells
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C) Activate immune cells
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D) Secrete interleukin
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The condition in which one of more genes that have no allelic counterpart is known as:

Federal Mock 3
Biology
Variation and Genetics
A) Homozygous
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B) Hemizygous
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C) Heterozygous
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D) Incomplete dominance
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In many bacteria, the cell wall is enclosed within a slime capsule made up of:

Federal Mock 3
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Polysaccharides
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B) Cellulose
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C) Amino acids
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D) Proteins
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A muscle with characters like a spontaneous contraction, one nucleus per cell, and no control over contraction is most likely:

Federal Mock 3
Biology
Support and Movement
Types of Muscles
A) Smooth muscle
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B) Cardiac muscle
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C) Skeletal muscle
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D) Visceral muscle
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The axial skeleton of an adult human includes:

Federal Mock 3
Biology
Support and Movement
Human Skeleton
A) The skull, pectoral girdle, and ribs
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B) The skull, ribs, and bones of arms and legs
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C) The pectoral and pelvic girdles
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D) The ribs, the skull, the sternum, and the vertebrate
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This option is incorrect. The grana are stacks of thylakoid membranes found in the chloroplasts of plant cells. The grana are primarily involved in the light-dependent reactions of photosynthesis, where the absorption of light energy occurs.

Federal Mock 3
Biology
Bioenergetics
Chloroplasts
A) Grana
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B) Stroma
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C) Thylakoid
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D) Both Grana and Stroma
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Role of lysosomes include:

Federal Mock 3
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Store hydrolytic enzymes
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B) Perform autophagy
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C) Destruction of cell
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D) All of above
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Gray matter of spinal cord does not contain:

Federal Mock 3
Biology
Coordination and Control
Central Nervous System
A) Cell bodies of sensory neurons
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B) Cell bodies of interneurons
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C) Axons of interneurons
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D) Cell bodies of motor neurons
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The chemical which regulates the enzymatic activity is:

Federal Mock 3
Biology
A) Activator
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B) Inhibitor
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C) Substrate
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D) Both A and B
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Evolution of kiwi, food of modern horse, webbed feet of duck, and loss of teeth in whale were all explained in detail by:

Federal Mock 3
Biology
Evolution
A) Lamarck
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B) Darwin
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C) Weismann
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D) De Vries
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Which of the following statement is incorrect:

Federal Mock 3
Biology
A) The competitive inhibitor binds to an alternative site.
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B) The substrate binds to the active site.
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C) Enzymes work best in optimum pH.
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D) Both the competitive inhibitor binds to an alternative site and the substrate binds to the active site.
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What is the function of the cholesterol in a cell surface membrane?

Federal Mock 3
Biology
Cell Structure and Function
Plasma Membrane
A) Controlling active transport
Show Explanation
B) Acting as a membrane blood receptor
Show Explanation
C) Helping cells join together
Show Explanation
D) Regulating the flexibility at the membrane
Show Explanation

The life span of RBC is:

Federal Mock 3
Biology
Transport
A) 100 days
Show Explanation
B) 110 days
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C) 120 days
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D) 130 days
Show Explanation

Platyhelminthes means:

Federal Mock 3
Biology
Kingdom Animalia
Classification according to Coelem
A) Flatworms
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B) Roundworms
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C) Segmented worms
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D) None of the above
Show Explanation

In term of enzyme action, maximum temperature refers to a temperature at which?

Federal Mock 3
Biology
A) Enzymes start to denature
Show Explanation
B) Enzymes start to re-nature
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C) Enzymes work best
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D) Enzymes are reactivated
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Pulmonary veins supply blood to the heart chamber:

Federal Mock 3
Biology
Transport
A) Right atrium
Show Explanation
B) Left atrium
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C) Right ventricle
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D) Left ventricle
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Cell surface markers are

Federal Mock 3
Biology
Cell Structure and Function
Plasma Membrane
A) Lipoproteins
Show Explanation
B) Glycolipids
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C) Sphingolipids
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D) Glycoproteins
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Exoskeleton of cockroach is made up of:

Federal Mock 3
Biology
Support and Movement
A) Cartilage
Show Explanation
B) Cuticle
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C) Chitin
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D) Amino acids
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How many fatty acid molecules are normally present in a fat or oil molecule?

Federal Mock 3
Biology
Biological Molecules
Lipids
A) 1
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B) 2
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C) 3
Show Explanation
D) 4
Show Explanation

On receiving the news of the sudden demise of a close friend; which is the most probable hormone that is secreted at that time?

Federal Mock 3
Biology
Coordination and Control
Endocrine System and its Hormones
A) Prostaglandin
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B) Growth inhibitors
Show Explanation
C) Estrogen
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D) Adrenaline
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Which of the following correctly shows structures which are found in a eukaryotic cell? (Yes present; No = absent)

Federal Mock 3
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
A) No No No
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B) No Yes No
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C) Yes No No
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D) Yes No Yes
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E) Yes Yes Yes
Show Explanation

First step of viral replication is:

Federal Mock 3
Biology
Variety of Life
A) Entry
Show Explanation
B) Assembly
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C) Uncoating
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D) Adsorption or Attachment
Show Explanation

Germ Theory of disease was proposed by:

Federal Mock 3
Biology
Kingdom Prokaryote
Taxonomy, Ecology & Diversity of Bacteria
A) Leeuwenhoek
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B) Louis Pasteur
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C) Walther Flemming
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D) Robert Koch
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Eukaryotic, multicellular, and consumers belong to ______ kingdom.

Federal Mock 3
Biology
Kingdom Animalia
A) Monera
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B) Protista
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C) Fungi
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D) Animalia
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Trypsinogen is activated by:

Federal Mock 3
Biology
Nutrition
Digestion and Absorption
A) Chymotrypsin
Show Explanation
B) Enteropeptidase
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C) Trypsin
Show Explanation
D) HCl
Show Explanation

The reflex arc, which is made of two neurons is known as:

Federal Mock 3
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Monosynaptic reflex arc
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B) Disynaptic reflex arc
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C) Polysynaptic reflex arc
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D) Asynaptic reflex arc
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Which combination describes a triglyceride?

Federal Mock 3
Biology
Biological Molecules
Lipids
A) Option A
Show Explanation
B) Option B
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C) Option C
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D) Option D
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The haploid number of chromosomes in human beings:

Federal Mock 3
Biology
Chromosomes and DNA
The Chromosomal Theory of Inheritance
A) 4
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B) 10
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C) 24
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D) 23
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As the pH of the blood decreases, H+ ions increase, which combines with the protein part of hemoglobin, to decrease its ability to bind with:

Federal Mock 3
Biology
Gaseous Exchange
Transport of Gases
A) O2
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B) CO2
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C) CO
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D) H2
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Which of the following produce response?

Federal Mock 3
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Effectors
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B) Stimulators
Show Explanation
C) Nerve
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D) Brain
Show Explanation

What explains the effect on a red blood cell of being placed into pure water?

Federal Mock 3
Biology
Transport
A) Less water leaves the cell than enters it, so the cell shrinks.
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B) More water enters the cell than leaves it, so the cell swells and bursts.
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C) Water enters the cells and none leaves it, so the cell swells and bursts.
Show Explanation
D) Water enters the cell and more leaves it, so the cell shrinks.
Show Explanation

The word glycogenesis means, the conversion of:

Federal Mock 3
Biology
Nutrition
Digestion and Absorption
A) Glucose to glycogen
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B) Lactic acid to glycogen
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C) Glycogen to glucose
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D) Amino acid to glycogen
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Sensation of pleasure, punishment, or sexual arousal are stimulated by the parts of the brain:

Federal Mock 3
Biology
Coordination and Control
Central Nervous System
A) Hippocampus
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B) Hypothalamus
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C) Amygdala
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D) Thalamus
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Number of bones in skull is:

Federal Mock 3
Biology
Support and Movement
Human Skeleton
A) 8
Show Explanation
B) 14
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C) 22
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D) 33
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The RNA found in Ribosomes is:

Federal Mock 3
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) mRNA
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B) rRNA
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C) tRNA
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D) Polysome
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Rod-shaped bacteria are known as:

Federal Mock 3
Biology
Kingdom Prokaryote
Shape of Bacteria
A) Cocci
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B) Bacilli
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C) Spirilla
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D) None of these
Show Explanation

Sperms are produced in:

Federal Mock 3
Biology
Reproduction
Reproduction in Animals
A) Vas deferens
Show Explanation
B) Collecting duct
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C) Epididymis
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D) Seminiferous tubules
Show Explanation

Chlorophyll molecule resembles the haem group of hemoglobin, the main difference between these two molecules is that chlorophyll has ______ ion.

Federal Mock 3
Biology
Bioenergetics
Photosynthetic pigments
A) Fe2+
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B) Mg2+
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C) Mn2+
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D) Ca2+
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In aerobic respiration most of the ATP is synthesized during:

Federal Mock 3
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) Oxidation of pyruvic acid
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B) Electron transport chain
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C) Krebs cycle
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D) Glycolysis
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What describes a non-specific immune response?

Federal Mock 3
Biology
Transport
Immunity and its types
A) Activation of killer T lymphocytes by infected cells
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B) Cloning of B lymphocytes to form plasma cells
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C) Ingestion of a bacterial cell by a neutrophil
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D) Presentation of antigen on the cell surface of macrophages
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In bacteria, the resistance against heat is provided by:

Federal Mock 3
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Granules
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B) Cysts
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C) Spores
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D) Plasmids
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In humans,________ is responsible for producing cell’s hydrogen peroxide.

Federal Mock 3
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Lysosomes
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B) Mitochondria
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C) Peroxisomes
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D) glyoxysome
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Retrovirus cause diseases in:

Federal Mock 3
Biology
Bio-diversity | Variety of Life
A) Rodents
Show Explanation
B) Fowls
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C) Cats
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D) All of these
Show Explanation

Which of the following helps in maintaining balance?

Federal Mock 3
Biology
Coordination and Control
Central Nervous System
A) Hypothalamus
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B) Medulla Oblongata
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C) Cerebellum
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D) Pons
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Which of the following phylum and its examples is NOT correct?

Federal Mock 3
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Nematoda… Ascaris and hookworm
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B) Annelid … Nereis and leech
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C) Echinodermata … sea star and brittle star
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D) Platyhelminthes … Planaria and liver fluke
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E) Cnidaria … Euplectella and bath sponge
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If an ideal gas has volume V at 27°C and it is heated at constant pressure so that it volume become 1.5V, the value of final temperature is:

Federal Mock 3
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) 327K
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B) 871K
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C) 177°C
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D) 600°C
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In a ripple tank 100 waves pass through a certain point in one second. If the wavelength of the wave is 1cm then the speed of the wave will be?

Federal Mock 3
Physics
Wave Motion and Sound
A) 1 ms-1
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B) 2 ms-1
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C) 3 ms-1
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D) 4 ms-1
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In projectile motion, the range of projectile will be maximum at an angle of:

Federal Mock 3
Physics
Forces and Motion
A) 30 degrees
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B) 45 degrees
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C) 80 degrees
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D) 90 degrees
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The velocity of a car traveling on a straight road is 36 km/h at an instant of time. Now traveling with uniform acceleration for 10s. The velocity becomes exactly double if the wheel radius of the car is 25cm then which of the following numbers is the closest to the number of revolutions that the wheel makes during these 10s?

Federal Mock 3
Physics
Circular Motion & Momentum
A) 84
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B) 95
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C) 126
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D) 135
Show Explanation

An electric cell of e.m.f E, is connected across a copper wire of diameter d and length L. The drift velocity of electrons in the wire is v0. If the length of the wire is changed to 2L, the new drift velocity of electrons in the copper wire will be:

Federal Mock 3
Physics
Magnetism and Electromagnetic Induction
Torque on a Current Carrying Coil
A) V
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B) 2V
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C) V/2
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D) V/4
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Which row describes the oscillations of two moving particles in a stationary wave that are separated by a distance of half a wavelength?

Federal Mock 3
Physics
Wave Motion and Sound
A) A
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B) B
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C) C
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D) D
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A ball is thrown vertically upward with a velocity of 98 m/s. If it takes 10 seconds to reach the highest point then the acceleration of the ball is:

Federal Mock 3
Physics
Forces and Motion
A) 9.8m/s2
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B) 98m/s2
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C) 980m/s2
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D) -9.8m/s2
Show Explanation

Alpha rays are nuclear radiations. They are in fact same as the __________ nuclei.

Federal Mock 3
Physics
Nuclear Physics
Radioactivity
A) Hydrogen
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B) Deuterium
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C) Tritium
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D) Helium
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Find the resistance if voltage of the circuit is 45 volts and current 30 Amp.

Federal Mock 3
Physics
Current Electricity
Ohms Law
A) 1.6 ohm
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B) 1.5 ohm
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C) 1.7 ohm
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D) 1.8 ohm
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A wire of initial length L and radius r is stretched by a length I. Another wire of the same material but with an initial length of 2L and radius 2r is stretched by length 2l. The ratio of the stored elastic energy per unit volume in the first and second wire is:

Federal Mock 3
Physics
Work, Power & Energy
A) 1:4
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B) 1:2
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C) 2:1
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D) 1:1
Show Explanation

The time rate of change of velocity is called:

Federal Mock 3
Physics
Forces and Motion
A) Force
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B) Acceleration
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C) Power
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D) Energy
Show Explanation

When a charged particle enters in a strong magnetic field, its kinetic energy ______.

Federal Mock 3
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) Decreases
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B) Increases then decreases
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C) Becomes zero
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D) Remains constant
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A body of mass 10 kg is moved parallel to the ground, through a distance of 2 m. The work done against gravitational force is ____.

Federal Mock 3
Physics
Work, Power & Energy
A) Zero
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B) 196 J
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C) -196 J
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D) 48 J
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If a charged particle is at rest but we are seeing it from a train then we observe —————-

Federal Mock 3
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) Electric field
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B) Magnetic field
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C) Both fields
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D) None of these
Show Explanation

A 300 W heater is used to boil 500g of water at 100˚C. How long should the heater be switched on? (The specific latent heat of vaporization of water is 2230 J/g)

Federal Mock 3
Physics
Heat and Thermodynamics
A) 62 mins
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B) 62 secs
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C) 1.5 hour
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D) 0.5 hour
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Relationship between angular and linear velocity is:

Federal Mock 3
Physics
Circular Motion & Momentum
A) ω= rv
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B) v= rω
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C) ω= v/r2
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D) v= ω/r
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The average translational kinetic energy for molecule of an ideal gas is given by:

Federal Mock 3
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) A
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B) B
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C) C
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D) D
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Two capacitors C1 (6µF) and C2 (12µF) are in series across a 180 volts D.C supply. Calculate the charges on C1 and C2 respectively.

Federal Mock 3
Physics
Electrostatics
Capacitor
A) 120×106 C, -420×106 C
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B) 320×10-6 C, 420×10-6 C
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C) 420×10-6 C, 320×10-6 C
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D) 720×10-6 C, 720×10-6 C
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The resultant of two forces of magnitude F and 2F can be:

Federal Mock 3
Physics
Scalars and Vectors
Resolution of Vectors
A) Less than F
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B) More than 3F
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C) C perpendicular to F
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D) Perpendicular to 2F
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KE of body is increased by 44 %, what is the percentage increase in the momentum?

Federal Mock 3
Physics
Work, Power & Energy
A) 10%
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B) 20%
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C) 30%
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D) 40%
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Two stones, 10kg and 50kg fall through 80m high cliff. Which stone has greater velocity at bottom? (ignoring air resistance)

(g=10ms-2)

Federal Mock 3
Physics
Forces and Motion
A) 10kg
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B) 50kg
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C) Both have same velocity
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D) Cannot be calculated
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A motorist travelling at 10 ms^-1 can bring his car to rest in a braking distance of 10 m. In what distance could he bring the car to rest from the period of 30 ms^-1 using the same breaking force?

Federal Mock 3
Physics
Forces and Motion
A) 17m
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B) 30 m
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C) 52 m
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D) 90 m
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In rotational motion, angular momentum plays a role which is analogous to that played by _____ in linear motion.

Federal Mock 3
Physics
Circular Motion & Momentum
A) Linear velocity
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B) Linear momentum
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C) Linear acceleration
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D) Inertia
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An alpha particle is ejected from the nucleus of an atom. Which of the following answers describes the change in the nucleus of the atom?

Federal Mock 3
Physics
Nuclear Physics
Radioactivity
A) The atomic number increases by 1, and the mass number remains unchanged.
Show Explanation
B) The atomic number increases by 1, and the mass number decreases by 4.
Show Explanation
C) The atomic number increases by 1, and the mass number increases by 2.
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D) The atomic number increases by 2, and the mass number increases by 4.
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E) The atomic number decreases by 2, and the mass number decreases by 4.
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Maximum power is delivered when internal resistance of the source is equals to ___.

Federal Mock 3
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) Zero resistance
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B) Load resistance
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C) Max resistance
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D) None of these options are correct
Show Explanation

A bar magnet has a magnetic moment 200 Am2. The magnet is suspended in a magnetic field of 0.30 NA-1m-1. The torque required to rotate the magnet from its equilibrium position at an angle of 30˚ will be:

Federal Mock 3
Chemistry
Magnetism and Electromagnetic Induction
Torque on a Current Carrying Coil
A) 30Nm
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B) 3073 Nm
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C) 60Nm
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D) 604Nm
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Which of the following is not true?

Federal Mock 3
Physics
Forces and Motion
A) Momentum is quantity of motion
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B) Unit of momentum is N.s
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C) Momentum is not a vector quantity
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D) Momentum is product of mass and velocity
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A frictional piston-cylinder based enclosure contains some amount of gas at a pressure of 400k Pa. Then heat is pressure in a quasi-static process. The piston moves up slowly through a height of 10cm. lf the piston has across section area of 0.3m2,the work done by the gas in the process is:

Federal Mock 3
Physics
Heat and Thermodynamics
Work and Heat
A) 6kj
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B) 12kj
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C) 75kj
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D) 24kj
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Electric potential difference between two points can be defined as ______.

Federal Mock 3
Physics
Electrostatics
Electric Potential
A) Difference of the kinetic energy per unit charge
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B) Difference of the kinetic energy
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C) Difference of the potential energy per unit charge
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D) Difference of the potential energy
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When the speed of your car is halved, by what factor does its kinetic energy decrease?

Federal Mock 3
Physics
Forces and Motion
A) 1/2
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B) 1/4
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C) 1/8
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D) 1/6
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The net enthalpy change in a chemical reaction is same whether it is brought about in two or more different ways in one or several steps. It is known as:

Federal Mock 3
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) Joule’s law
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B) Law of conservation of energy
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C) Hess’s law
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D) Henry’s law
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The light exhibits the phenomena of constructive interference under the situation when it is __________ and __________.

Federal Mock 3
Physics
Wave Motion and Sound
A) Monochromatic and in Phase
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B) Monochromatic and out of Phase
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C) In phase and non-monochromatic
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D) Out of phase and non-monochromatic
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Instantaneous acceleration of system executing SHM is directed:

Federal Mock 3
Physics
Oscillations and Simple Harmonic Motion
A) Towards the mean position
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B) Away from the mean position
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C) Perpendicular to the mean position upward
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D) Perpendicular to the mean position downward
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The concept of work function was given by ______.

Federal Mock 3
Physics
Dawn of Modern Physics
Photoelectric Effect
A) Bohr
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B) Einstein
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C) Rutherford
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D) None of these options is correct
Show Explanation

What is the internal energy of an object?

Federal Mock 3
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) It is the energy associated with the object’s movement through space.
Show Explanation
B) It is the sum of all the microscopic potential and kinetic energies of the molecules
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C) It is the energy due to attractions between the molecules within the object.
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D) It is the energy associated with the random movement of the molecules in the object.
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A monochromatic light is incident on two slits and an interference pattern is produced on a screen at distance L. Now one slit is covered, and no light comes from it. What is the change in pattern on the screen?

Federal Mock 3
Physics
Optics, Nature of Light and Optical Instruments
Nature Of Light
A) The width of central maximum is decreased
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B) The width of outer maximum is decreased
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C) The intensity of central maximum will decrease
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D) Less number of fringes will be observed
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If the mass of the bob of simple pendulum is doubled, its time period is:

Federal Mock 3
Physics
Oscillations and Simple Harmonic Motion
A) One half
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B) Doubled
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C) Remains constant
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D) One fourth
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A wire carries a current out of the page. Which diagram below correctly describes the magnetic field of the wire?

Federal Mock 3
Physics
Magnetism and Electromagnetic Induction
Magnetic Field Due to Current in a Long Straight Wire
A) Option A
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B) Option B
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C) Option C
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D) Option D
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The length of a conductor is halved. Its resistance will be _____.

Federal Mock 3
Physics
Current Electricity
Wire Wound Variable Resistors
A) Halved
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B) Doubled
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C) Unchanged
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D) Quadrupled
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The slope of displacement-time graph is:

Federal Mock 3
Physics
Forces and Motion
A) Velocity
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B) Displacement
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C) Acceleration
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D) Distance
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When two bodies move towards each other with constant speed, the distance between them decreases at the rate 6m/sec. If they move in the same direction, the distance between them increases at the rate of 4 m/sec. Calculate their velocities.

Federal Mock 3
Physics
Forces and Motion
A) 5 m/sec, 1 m/sec
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B) 3 m/sec, 3 m/sec
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C) 6 m/sec, 1 m/sec
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D) 4 m/sec, 2 m/sec
Show Explanation

A force F = 0.12 N is applied on a spring and the spring elongates by 3 cm. The specific constant of the spring is?

Federal Mock 3
Physics
Oscillations and Simple Harmonic Motion
A) 0.4 Nm-2
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B) 40 Nm-1
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C) 400 Nm-1
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D) 4 Nm-1
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The charge on gamma rays is _______.

Federal Mock 3
Physics
Nuclear Physics
Radioactivity
A) 1+
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B) 1-
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C) 0
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D) None of these options are correct
Show Explanation

In perfect elastic collision

Federal Mock 3
Physics
Forces and Motion
A) Only momentum is conserved
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B) Only total energy is conserved
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C) Only kinetic energy is conserved
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D) Momentum, kinetic energy, and total energy is conserved
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The path difference for the constructive interference is:

Federal Mock 3
Physics
Wave Motion and Sound
A) (n-1) λ
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B) (n+1) λ
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C) n λ/2
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D) nλ.
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A body moves a distance of 10 m along a straight line under the action of 5 N force. If work done is 25 J, then angle between the force and direction of motion of the body will be ______.

Federal Mock 3
Physics
Work, Power & Energy
A) 75˚
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B) 60˚
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C) 45˚
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D) 30˚
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The range of the projectile when launched at an angle of 15 degrees with the horizontal is 15 m. Its range, when launched at 45 degrees with the same speed is:

Federal Mock 3
Physics
Forces and Motion
Motion in Two Dimensions
A) 30.0 m
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B) 1.5 m
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C) 6.0 km
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D) 0.752 km
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A boy is standing in a lift falling freely under gravity and releases a ball from hand. As seen by the ball, the boy:

Federal Mock 3
Physics
Gravitation
Real and Apparent Weight
A) Falls down
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B) Remains stationary
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C) Remains stationary
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D) None of above
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A thermodynamic system undergoes a process in which its internal energy decreases by 300 J. If at the same time 120 J of work is done on the system, find the heat lost by the system.

Federal Mock 3
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) -420 J
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B) 420 J
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C) 80 J
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D) -80 J
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Conversion of heat energy completely into work violates:

Federal Mock 3
Physics
Heat and Thermodynamics
Second Law of Thermodynamics
A) Zeroth law of thermodynamics
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B) 1st law of thermodynamics
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C) 2nd law of thermodynamics
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D) 1st and 2nd law of thermodynamics
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A man throws a ball vertically upward in the compartment of an accelerated train. The ball will fall:

Federal Mock 3
Physics
Forces and Motion
Motion in Two Dimensions
A) ln front of him
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B) In his hand
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C) Behind him
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D) Beside him
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What is a typical value for the order of magnitude of the resistivity of copper?

Federal Mock 3
Physics
Current Electricity
Resistivity and its Dependence upon Temperature
A) 10^-8Ωm
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B) 10^-10Ωm
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C) 10^-6Ωm
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D) 10^2Ωm
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How much work is done by force of gravity in pulling a stone of weight 10N from the top of 250m high cliff to the foot of cliff?

Federal Mock 3
Physics
Forces and Motion
A) 250J
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B) 25J
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C) 2500J
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D) 25,000J
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