Which of the following has six isotopes?

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Isotopes
A) Manganese
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B) Tin
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C) Calcium
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D) Carbon
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C12H22O11+ conc. H2SO4—> 12 C + ? + H2SO4

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Theoretical Yield, Actual Yield and Percentage Yield
A) 11 H2O
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B) 11 O2
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C) 11 CO2
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D) 11 H2
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Choose the value of the Rydberg constant among the following values:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) 1.09678 x 107 m-1
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B) 1.602 x 10-19 C
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C) 1.7588 x 1011 C
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D) 1.007 x 107 m-1
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The equation shows the reaction between element X and dilute hydrochloric acid.

X(s) + 2HCl(aq) -> XCl2(aq) + H2(g)

What types of bonding is present in element X and in compound XCl2?

Punjab Mock 5
Chemistry
Chemical Bonding
Metallic Bonding
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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A compound was found to contain nitrogen and oxygen in the ratio 28g:80g. The formula of the compound is:

Punjab Mock 5
Chemistry
Stoichiometry
Mole
A) NO
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B) N2O3
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C) N2O4
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D) N2O5
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The mass number of an atom is:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Introduction to the Atom
A) The number of electrons
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B) The number of neutrons
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C) The number of protons
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D) The number of neutrons and protons
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How many molecules are there in 2.1 moles of CO₂:

Punjab Mock 5
Chemistry
Fundamental Principles of Organic Chemistry
Stoichiometry
A) 3.49 x 10⁻²⁴
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B) 2.53 x 10²⁴
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C) 1.26 x 10²⁴
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D) 3.79 x 10²⁴
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22.4 dm3 of volume of each H2 and O2 are sparked to produce water vapours (considered as ideal gas) on completion of reaction. What is the decrease in the volume of the vessel?

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Theoretical Yield, Actual Yield and Percentage Yield
A) 44 dm3
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B) 22.4 dm3
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C) 33.6 dm3
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D) 11.2 dm3
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Electronic configuration of K is:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) [Ar] 4s2
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B) [Ar] 4s1
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C) [Kr] 4s1
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D) [He] 4s1
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In an adiabatic process:

Punjab Mock 5
Chemistry
Thermochemistry
Laws of Thermodynamics
A) Pressure is maintained constant
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B) The gas is isothermally expanded
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C) There is perfect heat insulation
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D) System exchanges heat with the surroundings
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If the matter in a given system at a given condition is divided into two equal parts, then the value of the extensive properties will become:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
A) Double of the original value
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B) Half of the original value
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C) Remain the same as the original value
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D) One-fourth of the original value
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Which is the configuration of Cr?

Punjab Mock 5
Chemistry
Atomic Structure
A) [Ar] 3d4 4s2
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B) [Ar] 3d5 4s1
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C) [Ar] 3d6 4s1
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D) [Ar] 3d1 4s2
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The boiling point of water is higher than other hydrides because water molecules can form:

Punjab Mock 5
Chemistry
Chemical Bonding
Hydrogen Bonding
A) 4 hydrogen bonds
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B) 3 hydrogen bonds
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C) 2 hydrogen bonds
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D) 1 hydrogen bonds
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For, the reaction:

N2 + 3H2 ⇌ 2NH3

The production of NH3 will be favored at:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Factors Affecting Equilibria
A) High pressure and catalyst
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B) Low pressure only
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C) Low pressure and catalyst
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D) High pressure only
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Sigma bond is formed by:

Punjab Mock 5
Chemistry
Chemical Bonding
Intermolecular Forces
A) Transferring the electrons
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B) Head-on overlapping of atomic orbitals
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C) Mutual but unequal sharing of electrons
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D) Parallel overlapping of atomic orbitals
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Which of the following solids is an example of a substance with a macromolecular structure?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) Aluminium chloride
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B) Ice
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C) Magnesium oxide
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D) Silicon (IV) oxide
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E) Sodium chloride
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Linear combination of atomic orbitals (LCAO) results in the formation of:

Punjab Mock 5
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Sigma bond
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B) Pi bond
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C) Bonding molecular orbitals only
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D) Bonding and antibonding molecular orbitals
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The enthalpy change accompanying the gain of an electron by a neutral gaseous atom to form a negative ion is called:

Punjab Mock 5
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) Ionization potential
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B) Electronegativity
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C) Electron affinity
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D) Lattice energy
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The spectrum of He is expected to be similar to that of:

Punjab Mock 5
Chemistry
Atomic Spectra
A) Hydrogen
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B) Sodium
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C) Oxygen
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D) Li+
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In a reaction:

A+B 2C

When equilibrium was attained, the concentration was

[A] = [B] = 4 moles/dm3

[C]= 6 moles/dm3
The equilibrium constant Kc of this reaction is:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 1.25
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B) 2.25
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C) 3.25
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D) 2.75
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The common features, among the species CN-, CO, and NO+ are:

Punjab Mock 5
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Bond order 3 and Isoelectronic
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B) Bond order three and weak field ligands
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C) Bond order two andπacceptors
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D) Isoelectronic and weak field ligands
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Diameter of an atom is in the range of?

Punjab Mock 5
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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Avogadro’s constant is the number of:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
A) Electrons present in 2g of H
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B) Atoms in 24g of Mg
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C) Atoms in 1g of He
Show Explanation
D) Molecules in 35.5g of Chlorine
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When 18 x 10-3 moles/dm3 of acetic acid react with 22 x 10-3 moles/dm3 of ethyl alcohol to form 40 x 10-3 moles/dm3 of ethyl acetate and 40 x 10-3 moles/dm-3 of water. Find the value of equilibrium constant (kc):

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 4.04
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B) 3.14
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C) 3.04
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D) 2.02
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One mole of substance at STP has:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Mole
A) 2.24 dm³
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B) 24.4 dm³
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C) 2.44 dm³
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D) 22.4 dm³
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950 torr corresponds to:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Daltons Law of Partial Pressures
A) 3.5 atm
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B) 1 atm
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C) 3 atm
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D) 1.25 atm
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The maximum number of electrons in an atom with n=3 and l=2 is:

Punjab Mock 5
Chemistry
Atomic Structure
A) 10
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B) 6
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C) 18
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D) 0
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If the ratio of initial concentration of the reagents is greater than the Kc then:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) The reaction will shift towards the reverse direction
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B) More quantity of products is obtained
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C) The ratio increases to the value of Kc
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D) Equilibrium has been attained
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The raindrop acquires a spherical shape and ink spread over blotting paper due to:

Punjab Mock 5
Chemistry
Chemical Bonding
Intermolecular Forces
A) Surface tension
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B) Adhesive forces
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C) Viscosity
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D) Polarity
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Solid NaCl is a bad conductor of electricity because:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Solid NaCl is covalent
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B) In the solid state, there are no ions
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C) In solid NaCl. there is no migration of ions
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D) In solid NaCl, there are not electron
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Which of the following statements is NOT true for the first law of thermodynamics?

Punjab Mock 5
Chemistry
Thermochemistry
Laws of Thermodynamics
A) Total energy of the system and surrounding is conserved
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B) Energy can neither be created nor destroyed
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C) It is the same as law of conservation of energy
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D) Total energy of the system is increasing
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Sp3 hybridization in CH4 gives it ______ geometry.

Punjab Mock 5
Chemistry
Chemical Bonding
VSEPR Theory
A) Linear
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B) Coplanar
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C) Tetrahedral
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D) Octahedral
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The measurement of heat absorbed or given out in a chemical reaction is referred to as:

Punjab Mock 5
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) Endothermic reaction
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B) Exothermic reaction
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C) Thermochemistry
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D) Heat of formation
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Which of the following has the maximum number of unpaired electrons?

Punjab Mock 5
Chemistry
d and f Block Elements
A) Mg2+
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B) V3+
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C) Ti3+
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D) Fe2+
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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:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Analytical Chemistry
Stoichiometry
Mole
A) C2H4
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B) C6H6
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C) C8H8
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D) C4H4
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Bond energy:

I. is the energy required to break a bond between two atoms in a diatomic molecule

II. Is taken as the energy released in forming a bond form free atoms

III. Is the measure of the strength of bond

Punjab Mock 5
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) I only
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B) I and II only
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C) I and IIII only
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D) II only
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E) I, II and III
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Comparative rates of diffusion of He and SO2 will be _______.

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Diffusion And Effusion
A) 8
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B) 2
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C) 4
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D) 16
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Which of the following statements is true of Amorphous solids?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) They possess symmetry
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B) They are isotropic
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C) They are anisotropic
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D) They cleave along a particular direction
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E) They have a definite shape
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According to the law of mass action, “The rate of chemical reaction” is proportional to the:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) The amount of product formed
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B) Product of the molar concentration of reactants
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C) The initial concentration of reactants
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D) Catalyst
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The heat of a reaction can be calculated by using:

Punjab Mock 5
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) Joule’s Law
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B) Ohm’s Law
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C) Hess’s Law
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D) Faraday’s Law
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A child’s balloon has a volume 3.80 dm3, when the temperature is 35°C. If the balloon is put in a refrigerator and cooled to 5°c, the approximate volume of the balloon is (assume pressure inside the balloon is equal to atmospheric pressure):

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Boiling Point and Vapor Pressure
A) 3.00 dm3
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B) 3.43dm3
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C) 3.08 dm3
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D) 3.25 dm3
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When does a gas deviate the most from its ideal behavior ?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Non Ideal Behaviour Of Gases
A) At low pressure and high temperature
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B) At high pressure and high temperature
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C) At low pressure and low temperature
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D) At high pressure and low temperature
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The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Viscocity and Surface Tension
A) Joule
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B) N/m2
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C) Dynes/cm
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D) Poise
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An element has configuration 2, 8, 1. It belongs to, ______.

Punjab Mock 5
Chemistry
Atomic Structure
A) IA group and 3rd period
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B) IIIA group and 1st period
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C) IA group and 8th period
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D) VIIA group and 3rd period
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Dissolution of ammonium nitrate in water is an endothermic process. Which of the following graphs shows how the temperature alters as the ammonium nitrate is added to water and then the solution is left at room temperature?

Punjab Mock 5
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
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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Which of the following is the chemical formula of a compound indicating the relative number of atoms in the simplest ratio?

Punjab Mock 5
Chemistry
Stoichiometry
Mole
A) Empirical formula
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B) Empirical formula mass
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C) Molecular formula
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D) Molecular mass
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A 4s orbital has:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) One node
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B) Two nodes
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C) three nodes
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D) O nodes
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Which of the following molecules have zero Dipole moments?

Punjab Mock 5
Chemistry
Chemical Bonding
Covalent Bond
A) CCl4
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B) CO2
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C) Cl2
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D) C6H6
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E) All of the above
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H2S is an example of ______ hydride.

NTS 2012
Chemistry
Chemical Bonding
Hydrogen Bonding
A) Ionic
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B) Covalent
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C) Complex
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D) Metallic
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When an element exists in more than one crystalline form, the phenomenon is termed as:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Isomorphism
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B) Pollymorphism
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C) Isomerism
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D) Anisotropy
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Which of the following does not show variable valency?

Punjab Mock 5
Chemistry
d and f Block Elements
A) Mn
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B) Fe
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C) Zn
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D) Cr
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A bond is not formed:

Punjab Mock 5
Chemistry
Chemical Bonding
A) When both forces become equal to each other
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B) When attraction forces dominate repulsive forces
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C) When repulsive forces become equal to zero
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D) When repulsive forces dominate attraction forces
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Cl + e —-> Cl-
ΔH = -348kJ/mol
The value -348KJ/mol in this case will be:

Punjab Mock 5
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
A) Ionization energy
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B) Electronegativity
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C) Electron affinity
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D) Entropy
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Enthalpy of a compound is equal to its:

Punjab Mock 5
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) Heat of combustion
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B) Heat of formation
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C) Heat of solution
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D) Heat of dilution
Show Explanation

STATEMENTS:

I. The dialogue between Jinnah and Gandhi failed.

Il. Indian National Congress and Muslim League tried to join hands, so they will be united.

Punjab Mock 5
Logical Reasoning
Cause and Effect
A) Statement I is the cause and statement II is its effect.
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B) Statement II is the cause and statement I is its effect.
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C) Both statements I and II are independent causes
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D) Both statements I and II are the effects of independent cause.
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The ‘A’ state government has chalked out a plan for the underdeveloped ‘B’ district where
66% of the funds will be placed in the hands of a committee of local representatives.
Courses of action:
I. The ‘A’ state government should decide guidelines and norms for the functioning of the
committee.
II. Other state government may follow similar plan if directed by the Central government.

Punjab Mock 5
Logical Reasoning
Course of Action
A) If only I follows
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B) If only II follows
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C) If either I or II follows
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D) If neither I nor II follows
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If 7(x-2) = 3x – 2. What is the value of x?

Punjab Mock 5
Logical Reasoning
Letters and Symbols Series
A) -4
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B) -3
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C) 2
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D) 3
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Four people were witnessed as assaulted at an incident. Each of them have their own description of the scene. Which one will be probably right?

Punjab Mock 5
Logical Reasoning
Logical Problems
A) He was average height, thin, and middle aged
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B) He was tall, thin, and middle aged
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C) He was tall, thin and young
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D) He was tall, of average weight, and middle aged
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The Emporium Mall has more stores than the Pakages Mall.
The Amanah Mall has fewer stores than the Pakages Mall.
The Emporium Mall has more stores than the Amanah Mall.
If the first two statements are true, the third statement is

Punjab Mock 5
Logical Reasoning
Critical Thinking
A) True
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B) FALSE
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C) Uncertain
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D) None of these
Show Explanation

Suppose in a certain language MADRAS is coded as NBESBT. Then BOMBAY is coded in that language as:

Punjab Mock 5
Logical Reasoning
Logical Deduction
A) CPNCBZ
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B) CPNCBX
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C) CPOCBZ
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D) CQOCBZ
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Passive immunity is used against:

Punjab Mock 5
Biology
Transport
A) Malaria
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B) Typhoid
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C) Dengue
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D) Tetanus
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The plants having foreign DNA incorporated into their cells are called:

UHS 2013
Biology
Biotechnology
Tissue Culture
A) Colonal plants
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B) Transgenic plants
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C) Bio tech plants
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D) Tissue cultured plants
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Backbone of amino acids comprises of

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) R group
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B) Amino group
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C) Peptide bond
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D) Carboxylic group
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E) A,B and D
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It is an endoparasite of humans, cattle and pig that completes its life cycle in two hosts:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Tapeworm
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B) Liver fluke
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C) Aurelia
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D) Aurelia
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Malate is oxidized by _______ to oxaloacetate in Krebs’s Cycle.

Punjab Mock 5
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) ATP
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B) NADP
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C) NAD
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D) FAD
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Which of the following is a freshwater sponge?

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Sycon
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B) Leucosolenia
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C) Euplectella
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D) Spongilla
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Which one of the following is a fish?

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Flying fish
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B) Salmon
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C) Sea horse
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D) All of the above
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Species of Phylum Platyhelminthes are:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Roundworms
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B) Flatworms
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C) Hook worms
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D) Threadworms
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The soluble part of cytoplasm or fluid that remains when all organelles are removed is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Solution
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B) Gelatin material
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C) Cytoskeleton
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D) Cytosol
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They serve as a scaffold for formation of higher order chromatin structure:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Nucleosome
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B) Nucleus
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C) Chromosomes
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D) Histones
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Which one of the following acts as functional unit of lungs in man?

Punjab Mock 5
Biology
Gaseous Exchange
A) Air sac
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B) Trachea
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C) Larynx
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D) Bronchioles
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______ is most abundant carbohydrate in nature.

Punjab Mock 5
Biology
Biological Molecules
Carbohydrates
A) Waxes
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B) Glycerol
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C) Starch
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D) Cellulose
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Piriformis syndrome is associated with which of the following disorder:

Punjab Mock 5
Biology
Support and Movement
Disorders of Skeleton
A) Arthritis
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B) Sciatica
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C) Spondylosis
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D) Disc slip
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The flow of lymph in lymphatic vessels is maintained by:

Punjab Mock 5
Biology
Transport
A) Heart, activity of smooth muscles and valves
Show Explanation
B) Activity of skeletal muscles, heart and breathing movements
Show Explanation
C) Breathing movements, activity of skeletal muscles and valves
Show Explanation
D) Exercise, breathing movements and heart
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Granulocytes or white blood cells are produced in:

Punjab Mock 5
Biology
Transport
A) Lymph nodes
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B) Red bone marrow
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C) Tonsils
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D) Spleen
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Pseudocoelom is actually derived from:

Punjab Mock 5
Biology
Kingdom Animalia
Classification according to Coelem
A) Blastocoel
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B) Gastrocoel
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C) Neurocoel
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D) Haemocoel
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Centrioles are made up of ______ microtubules:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) 9
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B) 27
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C) 3
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D) 12
Show Explanation

Optimum pH value for the working of pancreatic lipase is:

Punjab Mock 5
Biology
A) 4.50
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B) 7.60
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C) 2.00
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D) 9.00
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In the light independent stage of photosynthesis, the CO2 combines with _______ to form an unstable 6-carbon intermediate.

Punjab Mock 5
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
A) Ribulose bisphosphate
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B) Hexose sugar
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C) Glycerate-3-phosphate
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D) Glyceraldehyde-9-phosphate
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In _____________ response, β-cells produce plasma cells that synthesize antibodies and release in blood plasma and tissue fluid.

Punjab Mock 5
Biology
Transport
A) Cell-Mediated
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B) Hormonal
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C) Humoral
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D) Phototactic
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Enzymes have what effect on the end-product?

Punjab Mock 5
Biology
A) They alter the product
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B) The nature of the product is completely changed
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C) No effect
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D) The end product is not obtained
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During breathing air from Pharynx enters to:

Punjab Mock 5
Biology
Gaseous Exchange
Respiratory System of Man
A) Trachea
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B) Bronchioles
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C) Alveoli
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D) Bronchi
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During animal cell division, the spindle fibres are formed from

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
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B) Centrioles
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C) Ribosomes
Show Explanation
D) Lysosomes
Show Explanation

Pasteurization technique is widely used for preservation of:

UHS 2013
Biology
Biotechnology
Genetic Engineering & its tools
A) Water
Show Explanation
B) Heat
Show Explanation
C) Milk products
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D) Vaccines
Show Explanation

The major cause of hepatitis B is ___.

Punjab Mock 5
Biology
Bio-diversity | Variety of Life
A) Blood transfusion
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B) Blood clotting
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C) Absence of fibrinogen
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D) Contaminated soil
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A condition called Goose pimples, are caused by:

ETEA 2018
Biology
Homeostasis
Thermoregulation
A) Overcooled body
Show Explanation
B) Bacteria
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C) Environmental changes
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D) Pollution
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Expiration in human beings is carried out by:

Punjab Mock 5
Biology
Gaseous Exchange
A) Contraction of lungs
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B) Contraction of intercostal membrane
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C) Relaxation of intercostal and diaphragm muscles
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D) Contraction of diaphragm muscles
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In translation the terminating codon is

UHS 2014
Biology
A) GUA
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B) UAA
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C) UUG
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D) AGU
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The type of carbohydrate which has high molecular weight and is sparingly soluble in water is:

Punjab Mock 5
Biology
Biological Molecules
Carbohydrates
A) Monosaccharides
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B) Disaccharides
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C) Polysaccharides
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D) Maltose
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The enzymes required for the Kreb cycle are found in ________.

Punjab Mock 5
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) F1 particles
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B) Lysosomes
Show Explanation
C) Cytoplasm
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D) Matrix
Show Explanation

Which organelle has two Subunits:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Endoplasmic reticulum
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B) Ribosomes
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C) Nucleus
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D) Plastids
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The term which is employed to the loss of appetite due to fear of becoming obese is:

Punjab Mock 5
Biology
Nutrition
A) Obesity
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B) Anorexia nervosa
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C) Dyspepsia
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D) Bulimia nervosa
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Treatment by using attenuated culture of bacteria is called

UHS 2014
Biology
A) chemotherapy
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B) sterilization
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C) antisepsis
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D) vaccination
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In human beings, what is the function of amylase in digestion?

Punjab Mock 5
Biology
Nutrition
Digestion and Absorption
A) Digestion of triglycerides
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B) Digestion of lipids
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C) Digestion of all types of food
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D) Digestion of carbohydrates
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Amino acid in which the R-group is hydrogen is:

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) Glycine
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B) Alanine
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C) Leucine
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D) Valine
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Among the following, which acid is an unsaturated acid:

Punjab Mock 5
Biology
Biological Molecules
Lipids
A) Butyric Acid
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B) Oleic Acid
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C) Palmitic Acid
Show Explanation
D) Both Oleic Acid and Palmitic Acid
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Peptidoglycan or murein is a special or distinctive feature of cell wall in

Punjab Mock 5
Biology
Kingdom Prokaryote
A) algae
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B) fungi
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C) bacteria
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D) plants
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What is the subunit of DNA

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) Phosphoric Acid
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B) Base
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C) Nucleotide
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D) Sugar
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During which period of interphase (cell cycle) DNA is synthesized?

UHS 2014
Biology
A) G1
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B) G2
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C) S
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D) G0
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The ability to distinguish between two separate points/objects is:

Punjab Mock 5
Biology
Cell Structure and Function
Techniques used in Cell Biology
A) Magnification
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B) Fractionation
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C) Centrifugation
Show Explanation
D) Resolution
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The most common respiratory substrate as a source of energy is

Punjab Mock 5
Biology
Bioenergetics
A) Glucose
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B) Sucrose
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C) Fructose
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D) Insulin
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End products of yeast fermentation, bacterial fermentation and anaerobic respiration are:

Punjab Mock 5
Biology
Bioenergetics
Anaerobic Respiration
A) Citric acid, lactic acid, carbon dioxide and water
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B) Ethyl alcohol, citric acid and carbon dioxide
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C) Ethyl alcohol, lactic acid, carbon dioxide and water
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D) Methanol, lactic acid and citric acid
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The outer membrane of the nuclear envelope is at places continuous with the:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Golgi Apparatus
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B) Endoplasmic Reticulum
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C) Lysozomes
Show Explanation
D) Peroxisomes
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Which of the following is purine:

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) Guanine
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B) Cytosine
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C) Thiamine
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D) Uracil
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Which component of the cell is concerned with cell secretions?

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Plasma membrane
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B) Golgi complex
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C) Cytoskeleton
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D) Mitochondria
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The most critical phase of mitosis which ensures equal distribution of chromatids in the daughter cells is:

Biology
UHS 2014
A) Prophase
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B) Metaphase
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C) Anaphase
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D) Telophase
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The intake of liquid materials across the cell membrane is

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Phagocytosis
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B) Endocytosis
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C) Pinocytosis
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D) Exocytosis
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A characteristics features of Echinoderm is:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Canal system
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B) Water vascular system
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C) Tracheal system
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D) Blood vascular system
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A complex network of channels extending from plasma membrane to nuclear membrane:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
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B) Lysosomes
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C) Endoplasmic reticulum
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D) Golgi Apparatus
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The central metabolic station and clearing house of a body is:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Liver
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B) Kidney
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C) Nephron
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D) Glomerulus
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Lipid metabolism is the function of:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
Show Explanation
B) Sarcoplasmic reticulum
Show Explanation
C) Rough Endoplasmic Reticulum
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D) Smooth Endoplasmic Reticulum
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The process by which unwanted structures within the cell are engulfed and digested within the lysosome is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Endocytosis
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B) Exocytosis
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C) Hydrolysis
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D) Autophagy
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The thickest chamber of the human heart is:

Punjab Mock 5
Biology
Transport
A) Left atrium
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B) Right atrium
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C) Right ventricle
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D) Left ventricle
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The use of living organisms in industry for the production of useful products is known as

UHS 2014
Biology
A) parasitology
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B) biochemistry
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C) biotechnology
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D) molecular biology
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The group of ribosomes joined by mRNA is called as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Monosome
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B) Polysomes
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C) Polypeptide

Show Explanation
D) Lysosome
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A cofactor tightly bound to the enzyme on the permanent basis is called

Punjab Mock 5
Biology
A) Activator
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B) Coenzyme
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C) Prosthetic group
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D) Apo-enzyme
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What is the percentage of lipids in the chemical composition of plasma membrane?

Punjab Mock 5
Biology
Cell Structure and Function
Plasma Membrane
A) 60-80%
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B) 20-40%
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C) 40-80%
Show Explanation
D) 20-60%

Show Explanation

The production of genetically identical copies of organisms by asexual reproduction is called:

Punjab Mock 5
Biology
Reproduction
Reproduction in Animals
A) Genetic engineering
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B) Integrated disease management
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C) Hydroponic culture technique
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D) Cloning
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Type of respiration which involves step by step breakdown of carbon chain molecules in the cell is called:

Punjab Mock 5
Biology
Bioenergetics
A) External respiration
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B) Cellular respiration
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C) Pulmonary respiration
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D) Cutaneous respiration
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Cell-mediated immune response is given by:

Punjab Mock 5
Biology
Transport
A) T-lymphocytes
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B) B lymphocytes
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C) Neutrophils
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D) Macrophages
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The competitive inhibitors have structural similarity with

Punjab Mock 5
Biology
A) Active site
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B) Binding site
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C) Substrate
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D) Coenzyme
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Which one of the following is the site of oxidative phosphorylation in mitochondria?

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Cristae
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B) Matrix
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C) Outer membrane
Show Explanation
D) Ribosomes
Show Explanation

The simplest independent unit of life is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
A) Bacterial colony
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B) Cell
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C) Chloroplast
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D) DNA
Show Explanation

If the genetic code is made up of three nucleotides, then total possible genetic codes will be

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) 4
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B) 20
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C) 64
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D) 61
Show Explanation

The _______ model of plasma membrane suggests that proteins are embedded in lipid bilayer:

Punjab Mock 5
Biology
Cell Structure and Function
Plasma Membrane
A) Unit membrane
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B) Fluid mosaic
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C) Permeable
Show Explanation
D) Ultracentrifuge
Show Explanation

Book lungs are present in arthropods for exchange of gases in class:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Crustacea
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B) Insecta
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C) Myriapoda
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D) Arachnida
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Which of the following holds the alpha helix of protein in its place:

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) R group
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B) Disulfide bond
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C) Amino group
Show Explanation
D) Hydrogen bond
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Where is the ileocolic sphincter located in your body?

Punjab Mock 5
Biology
Nutrition
Digestion and Absorption
A) At the junction of esophagus and stomach
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B) At the junction of stomach and small intestine
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C) At the junction of ileum and large intestine
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D) At the junction of small intestine and large intestine
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A shot leaves a gun at the rate of 160 m/s. Calculate the greatest distance to which it could be projected. (Take g = 10 m/s2)

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 2460 m
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B) 2560 m
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C) 2680 m
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D) 2760 m
Show Explanation

Two positive point charges are placed 2m apart. The electric potential at midpoint due to these two charges will be _____:

Punjab Mock 5
Physics
Electrostatics
A) Added to double
Show Explanation
B) Reduced to half
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C) Remains same (no effect)
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D) Cancel each other effect
Show Explanation

Trough of a wave acts as:

Punjab Mock 5
Physics
Wave Motion and Sound
A) Concave lens
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B) Convex lens
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C) Convex mirror
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D) Plane mirror
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A moon of mass ‘m’ orbits a planet of mass 100 m. Let the strength of the gravitational force exerted by the planet on the moon be denoted by F1 , and let the strength of the gravitational force exerted by the moon on the planet be F2 . Which of the following is true?

Punjab Mock 5
Physics
Forces and Motion
A) F1 is ten times greater than F2
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B) F1 is ten times smaller than F2
Show Explanation
C) F2 is ten times greater than F1
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D) F2 is ten times smaller than F1
Show Explanation
E) F1 is equal to F2
Show Explanation

What is true regarding magnetic force and magnetic intensity?

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) If an electron’s movement is parallel to the magnetic field. it will rotate
Show Explanation
B) If electron’s movement is parallel to magnetic field, it Will rotate anticlockwise
Show Explanation
C) If an electron enters perpendicular to the field force it would be parallel to the plane.
Show Explanation
D) If an electron enters perpendicular to the field force will be maximum.
Show Explanation

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

Punjab Mock 5
Physics
Wave Motion and Sound
A) Potential only
Show Explanation
B) Kinetic only
Show Explanation
C) A combination of both forms of energy
Show Explanation
D) There is no energy in stationary waves
Show Explanation

Two point charges of +5 C and -12 C attract each other with a force of 1.48 N. charge of -5 C is added to each of these charges. Now the force will be:

Punjab Mock 5
Physics
Electrostatics
A) 1.48 N (attractive)
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B) 1.48 N (repulsive)
Show Explanation
C) 2.96 (repulsive)
Show Explanation
D) Zero
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Law of conservation of momentum states that:

I. there is no external force applied to a system, then the total momentum of that system remains constant

II. if there is an external force applied to a system, then the total momentum of that system remains constant

III. if there is no external force applied to a system, then the total momentum of that system keeps changing

Punjab Mock 5
Physics
Circular Motion & Momentum
A) I only
Show Explanation
B) I and II only
Show Explanation
C) I and III only
Show Explanation
D) III only
Show Explanation

A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling at 40 m/s at a height of 100 m above the ground, where does the package strike the ground relative to the point at which it was released? (g= 9.8 m/s2)

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 120 m
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B) 130 m
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C) 140 m
Show Explanation
D) 180.7 m
Show Explanation

Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45° to the horizontal?

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) The acceleration vector points opposite to the velocity vector on the way up and in the same direction as the velocity vector on the way down.
Show Explanation
B) The speed at the top of the trajectory is zero.
Show Explanation
C) The object’s total speed remains constant during the entire flight.
Show Explanation
D) The horizontal speed decreases on the way up and also decreases on the way down.
Show Explanation
E) The vertical speed decreases on the way up and increases on the way down.
Show Explanation

The quantity of heat required to raise the temperature of one mole of a substance through 1 K is called:

Punjab Mock 5
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) Carnot engine
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B) Molar specific heat
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C) Kinetic specific heat
Show Explanation
D) General gas law
Show Explanation

A thermocouple is immersed in water at 373 K and the other in ice at 273K. The emf of the thermocouple Is 90 (μ)V for each 1 K difference in temperature between junctions, and the thermocouple resistance is 6 Ω. What current will flow in the galvanometer connected in series with an internal resistance of 30ohms?

Punjab Mock 5
Physics
Current Electricity
A) 1.8 μA
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B) 250 μA
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C) 300 μA
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D) 1.5 mA
Show Explanation

1 radian = _____ degrees.

Punjab Mock 5
Physics
Circular Motion & Momentum
A) 360
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B) 180
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C) 100
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D) 57.3
Show Explanation

What force should be applied on a 10 kg body so that it moves down in a vacuum with an acceleration of 3 m/s2 ? (Take g=9.8 m/s2)

Punjab Mock 5
Physics
Forces and Motion
A) 42 N
Show Explanation
B) 46 N
Show Explanation
C) 68 N
Show Explanation
D) 53 N
Show Explanation

What will be the energy of an X-ray quantum of wave length 1.0 x 10-10 m?

Punjab Mock 5
Physics
Dawn of Modern Physics
A) 0.6 x 10^-15 J
Show Explanation
B) 1.98 x 10^-15 J
Show Explanation
C) 3.7 x 10^-15 J
Show Explanation
D) 4.7 x 10^-15 J
Show Explanation

If the body is rotating with uniform angular velocity, then its torque is:

Punjab Mock 5
Physics
Circular Motion & Momentum
A) Zero
Show Explanation
B) 90
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C) 1
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D) -1
Show Explanation

At which of the following places, motion of simple pendulum becomes slowest:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) Murree
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B) Karachi
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C) K-2
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D) Peshawar
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Due to the magnetic force, a positively charged particle executes uniform circular motion within a uniform magnetic field ‘B’. If the charge is ‘q’ and radius of its path is r, which of the expressions gives the magnitude of the particle’s linear momentum:

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) qBr
Show Explanation
B) qB/r
Show Explanation
C) q/(Br)
Show Explanation
D) B

To double the total energy for a mass-spring system oscillating in SHM, by what factor must the amplitude increase?

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) 4
Show Explanation
B) 2
Show Explanation
C) √2 = 1.414
Show Explanation
D) ∜2 = 1.189
Show Explanation

In Doppler effect, if listener moves towards a stationary source then:

Punjab Mock 5
Physics
Wave Motion and Sound
A) Observed frequency is greater than original frequency
Show Explanation
B) Observed frequency is less than original frequency
Show Explanation
C) Observed frequency is equal to original frequency
Show Explanation
D) Observed frequency is independent of original frequency
Show Explanation

.A stone dropped from a certain height can reach the ground in 5 s. It is stopped after 3 seconds of its fall and then allowed to fall again. Find the time taken by the stone to reach the ground for the remaining distance.

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 2 s
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B) 4 s
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C) 6 s
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D) 8 s
Show Explanation

A shot leaves a gun at the rate of 160m/s. Calculate the greatest distance to which it could be projected and the height to which it would rise: (g=10 m/s2)

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 1560m, 540m
Show Explanation
B) 2560m, 640m
Show Explanation
C) 3560m, 740m
Show Explanation
D) 4560m, 840m
Show Explanation

The time period of a seconds pendulum on the surface of moon becomes:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) 2√ 6 seconds
Show Explanation
B) 1 seconds
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C) 2 seconds
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D) 6√ 2 seconds
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A battery of 6 volts is connected to two resistors of 3 ohm and 2 ohm joined together in series. What will be the current through the circuit?

Punjab Mock 5
Physics
Current Electricity
Electric Current
A) 6.2 A
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B) 5.2 A
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C) 4.2 A
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D) 2.2 A
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E) 1.2 A
Show Explanation

A 50 watt bulb is operated by 120 volts. What is the current through the bulb?

Punjab Mock 5
Physics
Current Electricity
Electric Current
A) 0.416 A
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B) 1.5 A
Show Explanation
C) 2.5 A
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D) 3.5 A
Show Explanation

A ship approaching a seaport at 10 km/h sends a sonic signal of frequency of 1000 Hz. What is the apparent frequency of the signal as received by a receiver on the seaport?

Punjab Mock 5
Physics
Wave Motion and Sound
A) 984 Hz
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B) 1000 Hz
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C) 1008 Hz
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D) 1210 Hz
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Projectile must be launched at which angle with the horizontal to attain maximum range?

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 90 degrees
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B) 45 degrees
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C) 75 degrees
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D) 105 degrees
Show Explanation

According to the first law of thermodynamics, ΔU = Q + W, where ΔU Is the increase in internal energy of the system, Q is the heat transferred to the system and W is the external work done on the system.
Which of the following is NOT a correct expression?

Punjab Mock 5
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) At constant temperature: Q = -W
Show Explanation
B) When no work is done: ΔU = Q
Show Explanation
C) Work done on the system: ΔU = Q + P Δ V
Show Explanation
D) When work is done by the system: ΔU = Q + W
Show Explanation

A pipe open at both ends has a length of 5m. The second harmonic frequency is _____. Velocity of sound in air = 340 m/s.

Punjab Mock 5
Physics
Wave Motion and Sound
A) 17 Hz
Show Explanation
B) 34 Hz
Show Explanation
C) 68 Hz
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D) 306 Hz
Show Explanation

Charges of +2 μC and -2 μC are situated at points P and Q respectively, as shown below. X is midway between P and Q. Which of the following correctly describes the electric field and the electric potential at point X?

Punjab Mock 5
Physics
Electrostatics
A) Option A
Show Explanation
B) Option B
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C) Option C
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D) Option D
Show Explanation

The six strings of a guitar are the same length under nearly the same tension, but they have different thicknesses. On which string do waves travel the fastest?

Punjab Mock 5
Physics
Wave Motion and Sound
A) The thickest string
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B) The thinnest string
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C) The wave speed is the same on all the strings
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D) None of the above
Show Explanation

There is a current of 25 A in a long straight wire. What is the flux density at a point 3 cm from the wire?

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) 1.67 x 10-4 T
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B) 3.67 x 10-4 T
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C) 5.67 x 10-4 T
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D) 7.67 x 10-4 T
Show Explanation

If a wire having current 10A has a 3T magnetic field, what will be the magnetic field at a point from the wire at double the distance?

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Magnetic Field Due to Current in a Long Straight Wire
A) Reduces by factor 2
Show Explanation
B) Becomes double
Show Explanation
C) Reduces by factor 4
Show Explanation
D) Becomes triple
Show Explanation

When a conductor of a cross-sectional area 5×10-6 m2 carries a current of 6 A, the drift velocity of the conduction electrons is 1.2 x 10-4 ms1-. What is the number density (number per unit volume) of the conduction electrons?

Punjab Mock 5
Physics
Current Electricity
A) 4×10-28 m-3
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B) 1.6×10-27 m-3
Show Explanation
C) 2.5×10-27 m-3
Show Explanation
D) 6.3×1028 m-3
Show Explanation

A battery whose emf is 40 V has an internal resistance of 5 Ohms. If this battery is connected to a 15 Ohms resistor ‘R’, what will be the voltage drop across ‘R’:

Punjab Mock 5
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) 10 V
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B) 30 V
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C) 40 V
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D) 50 V
Show Explanation

A particle is projected at an angle of 45 degrees with a velocity of 9.8 m/s. The horizontal range will be:
(g=9.8 m/s2)

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 9.8 / √2 m
Show Explanation
B) 9.8 √3 m
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C) 9.8 m
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D) 4.9 m
Show Explanation

The product of frequency and time period is equal to:

Punjab Mock 5
Physics
Wave Motion and Sound
A) 2
Show Explanation
B) 3
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C) 0
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D) 1
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A circuit in which there is a current of 5 amp is changed so that the current falls to zero in 0.1 s. If an average e.m.f of 200 volts is induced, what is the self inductance of the circuit?

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Mutual and Self Induction
A) 1 Henrys
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B) 2 Henrys
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C) 3 Henrys
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D) 4 Henrys
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Two capacitors C1 (6μF) and C2(12μF) are in series across a 180 volts d.c. supply. Calculate the potential difference across each capacitor (C1 and C2).

Punjab Mock 5
Physics
Electrostatics
A) 98 volts … 32 volts
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B) 120 volts … 60 volts
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C) 68 volts … 96 volts
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D) 30 volts … 65 volts
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The total outward flux over any closed hypothetical surface called _____ is equal to the total charge enclosed divided by ε irrespective of how the charge is distributed.

Punjab Mock 5
Physics
Electrostatics
A) Coulomb surface
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B) Gaussian surface
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C) Ohm surface
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D) Faraday surface
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The following question belongs to the topic of momentum:

Punjab Mock 5
Physics
Circular Motion & Momentum
A) Current
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B) Length
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C) Angular momentum
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D) Torque
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Which graph in SHM shows the K.E of a body:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
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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A player throws a ball at an initial velocity of 36 m/second. The maximum distance the ball can reach (assume ball is caught at the same height at which it was released) is:

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 146 m
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B) 130 m
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C) 132 m
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D) 129 m
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What is the flux density at a point 3 cm from the long straight wire, when there is a current of 25 A in a wire: (u0= 4? x10-7)

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) 0.23×10-1 T
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B) 1.67x 10-4 T
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C) 2.99×10-6 T
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D) 3.63×10-8 T
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A body is moving with an initial velocity of 2 kms-1. After a time of 50 secs its velocity becomes 1.5 kms-1, Its acceleration will be:

Punjab Mock 5
Physics
Forces and Motion
A) 30 ms-1
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B) 40 ms-1
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C) 20 ms-1
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D) 10 ms-1
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