IUPAC name of C6H5 – CH2 – CH2 – NH2 is:

Balochistan Mock 2
Chemistry
Hydrocarbons
Nomenclature of Hydrocarbons
A) 2-phenyl ethenamine
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B) 2-phenyl ethanamine
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C) 2-phenyl ethylamine
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D) 3-phenyl ethanamine
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Which of the following has the maximum number of unpaired d electrons?

Balochistan Mock 2
Chemistry
Atomic Structure
A) Mg 2+
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B) Ti 3+
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C) V 3+
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D) Fe 2+
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For which mechanism the first step involved is the same?

Balochistan Mock 2
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) E1 and E2
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B) SN1 and E2
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C) E1 and SN2
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D) E1 and SN1
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Avogadro’s constant is the number of:

Balochistan Mock 2
Chemistry
Introduction to Fundamental Concepts of Chemistry
Important Assumptions of Stoichiometric Calculations
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
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D) Molecules in 35.5g of Chlorine
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Which one is not a nucleophile?

Balochistan Mock 2
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) C3H7O-
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B) SCN-
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C) H2C+
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D) NH3
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Which of the following fertilizers has the maximum percentage of nitrogen in solid state at 46% N?

Balochistan Mock 2
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Ammonia
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B) Urea
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C) Di ammonium hydrogen phosphate
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D) Ammonium nitrate
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Benzene can be prepared from:

Balochistan Mock 2
Chemistry
Hydrocarbons
Benzene and its Preparation
A) From Petroleum
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B) From Coal
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C) From Acetylene
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D) From Phenol
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E) All of these
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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?

Balochistan Mock 2
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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The order of reactivities of the following alkyl halides for an SN2 reaction is:

Balochistan Mock 2
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) RF > RCl > RBr > RI
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B) RF > RBR > RCl > RI
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C) RCl > RBr > RF > RI
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D) RI > RBr > RCl > RF
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In one second if the concentration changes from 0.1 to 0.25 then the rate will be:

Balochistan Mock 2
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
A) 0.02 moles/dm3s-1
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B) 0.03 moles/dm3s-1
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C) 0.15 moles/dm3s-1
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D) 0.11 moles/dm3s-1
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The common features, among the species CN-, CO, and NO+ are:

Balochistan Mock 2
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Bond order 3 and Isoelectronic
Show Explanation
B) Bond order three and weak field ligands
Show Explanation
C) Bond order two andπacceptors
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D) Isoelectronic and weak field ligands
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Each half reaction in ion electron method is balanced by adding:

Balochistan Mock 2
Chemistry
Electrochemistry
Redox Equations
A) Electrons on left hand side
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B) Electrons on right hand side
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C) Both left or right hand side
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D) None of these options are correct
Show Explanation

Which of the following statements is incorrect about amorphous solids?

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) They are anisotropic
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B) They are rigid and incompressible
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C) They melt over a wide range of temperature
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D) There is no orderly arrangement of particles
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273 mL of a gas at STP was taken to 27oC and 600 mm pressure. The final volume of the gas would be:

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Gas Laws and General Gas Equation
A) 273 mL
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B) 300 mL
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C) 380 mL
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D) 586 mL
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How many electrons can occupy in 7th energy level of an atom. Calculate by using 2n2 formula

Balochistan Mock 2
Chemistry
Atomic Structure
A) 24
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B) 5
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C) 72
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D) 98
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Treatment of propionaldehyde with Dil. the NaOH solution gives:

Balochistan Mock 2
Chemistry
Aldehydes and Ketones
Carboxylic Acids and its Derivatives
A) CH3 CH2COOCH2C2H5
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B) CH3 CH2 CHOH CH2 CH2 CHO
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C) CH3 CH2 CH (OH) CH(CH3) CHO
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D) CH3 CH2 COCH2 CH2 CHO
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The outer shell configuration of transition block elements is given by:

Balochistan Mock 2
Chemistry
d and f Block Elements
A) (n-1) d1-10 na2
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B) (n-1)d1-10(n-1)s0-2
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C) (n-1)d1-10ns0-2
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D) nd1-10ns0-2
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Vapor pressure is measured by calculating the difference in liquid pressure and?

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Boiling Point and Vapor Pressure
A) Mercury pressure
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B) Glass pressure
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C) Atmospheric pressure
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D) Container pressure
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How many molecules are there in 2.1 moles of CO₂:

Balochistan Mock 2
Chemistry
Introduction to Fundamental Concepts of Chemistry
Important Assumptions of Stoichiometric Calculations
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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Which of the following molecules have zero Dipole moments?

Balochistan Mock 2
Chemistry
Chemical Bonding
Bond Energy and Bond Length
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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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?

Balochistan Mock 2
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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Electronic configuration of M2+ ion is 2, 8, 14 and its atomic weight is 56 amu. The number of neutrons in its nucleus are:

Balochistan Mock 2
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) 30
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B) 32
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C) 42
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D) 52
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The common features, among the species CN-, CO, and NO+ are:

Balochistan Mock 2
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Bond order 3 and Isoelectronic
Show Explanation
B) Bond order three and weak field ligands
Show Explanation
C) Bond order two andπacceptors
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D) Isoelectronic and weak field ligands
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In the reaction of p- chlorotoluene with KNH2 in liquid NH3, the major product is:

Balochistan Mock 2
Chemistry
Hydrocarbons
Reactions of Benzene
A) O – toluidine
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B) M – toluidine
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C) P – toluidine
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D) p-chloroaniline
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Phenol is more reactive than benzene towards electrophilic substitution. This characteristic is due to which of the following?

Balochistan Mock 2
Chemistry
Alcohol, Phenols, and Ethers
A) Hydrogen bonding
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B) Inductive effect
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C) Strong mesomeric effect
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D) Weak mesomeric effect
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– ROR is the nucleophile of

Balochistan Mock 2
Chemistry
Aldehydes and Ketones
Physical Properties of Aldehydes And Ketones
A) Alcohols
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B) Esters
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C) Cyanides
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D) Ethers
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Concentration of reactants and products are expressed as Moles per unit _______.

Balochistan Mock 2
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
A) Area
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B) length
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C) Volume
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D) None of these
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The decomposition of phosphorus pentachloride in the presence of moisture takes place by the following mechanism.

The rate equation for this reaction will be:

Balochistan Mock 2
Chemistry
Reaction Kinetics
Rate and velocity of chemical reaction
A) Rate = k [POCl3][H2O]3
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B) Rate = k [PCl5][H2O]
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C) Rate = k [PCl5][H2O]4
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D) Rate = [PCl5][H2O]
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In the discharge tube positive rays move in which direction?

Balochistan Mock 2
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) Towards anode
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B) Towards cathode
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C) move randomly
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D) Move towards vacuum in the tube
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How many chain isomers can be obtained from the alkane C6H14?

Balochistan Mock 2
Chemistry
Fundamental Principles of Organic Chemistry
A) 7
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B) 6
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C) 5
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D) 4
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Electronic configuration of chromium (Proton number 24) is:

Balochistan Mock 2
Chemistry
Atomic Structure
A) [Ar] 3d4 4s2
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B) [Ar] 3d2 4s2
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C) [Ar] 3d5 4s1
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D) [Ar] 3d5 4s2
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Phenol reacts with CH3COCl to give:

Balochistan Mock 2
Chemistry
Alcohol, Phenols, and Ethers
A) Acid
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B) Ester
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C) Alcohol
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D) Aldehyde
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The electrophilic reactions of Benzene are:

Balochistan Mock 2
Chemistry
Hydrocarbons
Reactions of Benzene
A) Halogenation
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B) Nitration
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C) Sulphonation
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D) Alkylation and Acylation
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E) All of these
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Hydrolysis of acyl chloride results in the formation of:

Balochistan Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) Acid anhydride
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B) Carboxylic acid
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C) Amides
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D) Esters
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In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :

Balochistan Mock 2
Chemistry
d and f Block Elements
A) Cr3+
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B) Ti3+
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C) V3+
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D) Zn2+
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Carbon dioxide is an Example of?

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) Ionic Solid
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B) Metallic Solid
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C) Molecular Solid
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D) Covalent Solid
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RMgX is an organometallic compound, generally known as:

Balochistan Mock 2
Chemistry
Alkyl Halides and Amines
Grignard Reagent
A) Grignard’s Reagent
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B) Baeyer’s Reagent
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C) Ether
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D) Ester
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A solution which does not tend to vary in pH is called?

Balochistan Mock 2
Chemistry
Chemical Equilibrium
A) Acidic solution
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B) Buffer solution
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C) Bases solution
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D) Super saturated solution
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Which of the following reagents will reduce butanoic acid to butanol?

Balochistan Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) LiAlH4
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B) LiAlH4.H2O
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C) Mg(BH4)2
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D) All of the above
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Chlorine is manufactured commercially by the electrolysis of aqueous sodium chloride (brine). Which other products are made in this process?

Balochistan Mock 2
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Hydrochloric acid and hydrogen
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B) Hydrogen and sodium
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C) Hydrogen and sodium hydroxide
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D) Sodium and sodium hydroxide
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Which of the following molecules have zero Dipole moments?

Balochistan Mock 2
Chemistry
Chemical Bonding
Bond Energy and Bond Length
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
Show Explanation

Hydrolysis means reaction with

Balochistan Mock 2
Chemistry
Solution and Colloids
A) Oxygen
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B) Hydrogen
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C) Water
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D) Air
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Which of the following has six isotopes?

Balochistan Mock 2
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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The diagram below represents the process of:

Balochistan Mock 2
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Hydrolysis
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B) Condensation
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C) Neutralization
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D) Metabolism
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Benzene also undergoes electrophilic substitution with fuming sulphuric acid for several hours. The electrophile in this reaction is:

Balochistan Mock 2
Chemistry
Hydrocarbons
Reactions of Benzene
A) SO2
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B) SO3
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C) SO4
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D) H2SO4
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Which of the following is the correct equation to calculate relative molecular mass of a gas.

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Gas Laws and General Gas Equation
A) M = mPR / VT
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B) M = PV / mRT
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C) M = mPRT / V
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D) M = mRT / PV
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CH ≡ CH + 2AgNO3 -> AgC ≡ CAg + 2HNO3 represents _____ property of acetylene.

Balochistan Mock 2
Chemistry
Hydrocarbons
Alkynes
A) basic
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B) acidic
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C) dehydrating
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D) physical
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Salt Bridge is used for the purpose of:

Balochistan Mock 2
Chemistry
Electrochemistry
Redox Equations
A) Producing Electrons
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B) Circuit Completion
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C) Increasing speed of electrons
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D) All of these
Show Explanation

An ester is prepared by the reaction of:

Balochistan Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) Two alcohols
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B) Carboxylic acid and alcohol
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C) Ketone and alcohol
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D) Aldehyde and alcohol
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The number of reacting molecules which change their concentration in a chemical change is called:

Balochistan Mock 2
Chemistry
Reaction Kinetics
Order of reaction and its determination
A) Extent of a Reaction
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B) Order of a Reaction
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C) Specific rate of a reaction
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D) Enthalpy of reaction
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Which of the following will react with water?

Balochistan Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Liquids and Water
A) CHCl3
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B) Cl3CCHO
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C) CHI4
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D) ClCH2CH2Cl
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Dehydration of ethanol at 100 oC in the presence of concentrated H2SO4 gives:

Balochistan Mock 2
Chemistry
Alcohol, Phenols, and Ethers
A) Ethene
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B) Ethane
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C) Ethyne
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D) Ether
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Le-Chatelier Principle is about

Balochistan Mock 2
Chemistry
Chemical Equilibrium
Factors Affecting Equilibria
A) Reaction Mixture
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B) Reactants
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C) Equilibrium Mixture
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D) Products
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If the body is rotating with uniform angular velocity, then its torque is:

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) Zero
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B) 90
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C) 1
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D) -1
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Speed of sound is fast in moist air because:

Balochistan Mock 2
Physics
Wave Motion and Sound
A) Moist air is heavier than dry air
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B) Value of gamma is more for moist air
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C) Density of moist air is less than density of dry air
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D) Density of moist air is more than density of dry air
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Some ice, at its melting point, is added to m kg of water at the initial temperature of 290K. The ice melts completely and the final temperature of the water is 273K. If c is the specific heat capacity of the water and L is the latent heat of fusion of ice, what is the minimum mass of ice that is required?

Balochistan Mock 2
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) 17mc/L
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B) L/17mc
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C) 17m/Lc
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D) 290m/Lc
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A set of Atoms in an excited state decays:

Balochistan Mock 2
Physics
Nuclear Physics
Radioactivity
A) In any general state with lower energy
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B) In any state when excited by electric field
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C) In any state when excited by magnetic field
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D) None of these options are correct
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The body of a car is supported by four springs each of constant 2000 Nm-1. What will be the value of spring constant for this combination of springs?

Balochistan Mock 2
Physics
Oscillations and Simple Harmonic Motion
A) 2000 Nm-1
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B) 8000 Nm-1
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C) 500 Nm-1
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D) 4000 Nm-1
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A TV tower has a height of 100m. The average population density around the tower is 1000 per km2 . The radius of the earth is 6.4×106 m. × The population covered by the tower is

Balochistan Mock 2
Physics
Electromagnetic Waves
A) 2×106
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B) 3×106
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C) 4×106
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D) 6×106
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If two equal masses are in motion with same individual speeds, we can conclude that:

Balochistan Mock 2
Physics
Forces and Motion
A) Their momentums are same
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B) Their momentums can be different from each other
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C) Their kinetic energies are different from each other
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D) Their total energies are same
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In a full-wave bridge rectification, the number of diodes used are:

Balochistan Mock 2
Physics
Alternating Current
Alternating Voltage and Current
A) 1
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B) 2
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C) 3
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D) 4
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What is the number of spectral series in the hydrogen spectrum?

Balochistan Mock 2
Physics
Atomic Spectra
Spectrum of Hydrogen Atom
A) Four
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B) Three
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C) Five
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D) One
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Which type of energy does the capacitor store?

Balochistan Mock 2
Physics
Electrostatics
Capacitor
A) Kinetic
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B) Potential
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C) Thermal
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D) Light
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An alternation voltage V (in volts) is represented by the equation:
V = 300 sin (100πt)
What is the value of “f” for this voltage?

Balochistan Mock 2
Physics
Alternating Current
Alternating Voltage and Current
A) 100 Hz
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B) 50 Hz
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C) 25 H
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D) 200 Hz
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The diagram shows a wire, carrying an electronic current I, placed between the poles of a magnet. In which direction does the force on the wire act?

Balochistan Mock 2
Physics
Magnetism and Electromagnetic Induction
Force on a Current Carrying Conductor in a Uniform Magnetic Field
A) Into the paper
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B) Towards the N pole of the magnet
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C) Out of the paper
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D) Towards the S pole of the magnet
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The waves which can travel directly along surface of the earth are known as

Balochistan Mock 2
Physics
Wave Motion and Sound
A) ground waves
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B) X-ray
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C) α − rays
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D) sky waves
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If we are standing in a bus and the driver applies a brake then we feel:

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) A pseudo force pushes backwards
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B) A pseudo force pushes forwards
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C) A real force pushes backwards
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D) A real force pushes forwards
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The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. If the distance is reduced to 2 metres, what will be the field intensity?

Balochistan Mock 2
Physics
Electrostatics
Electric Field Lines
A) 400 N/C
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B) 800 N/C
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C) 600 N/C
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D) 1200 N/C
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The electron is purely a ___ when free.

Balochistan Mock 2
Physics
Dawn of Modern Physics
Pair Production and Annihilation
A) Particle nature
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B) Wave nature
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C) Dual nature
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D) It transforms to photon
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The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load:

Balochistan Mock 2
Physics
Electrostatics
Capacitor
A) Current is high
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B) Current is low
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C) Voltage is high
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D) Voltage is low
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Work function was given by:

Balochistan Mock 2
Physics
Dawn of Modern Physics
Compton Effect
A) Newton
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B) Heisenberg
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C) Einstein
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D) Bohr
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What is the relationship between power, urrent and voltage?

Balochistan Mock 2
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) P=V/I
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B) P=VI
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C) 2P=l+V
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D) All of them
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Platinum wire becomes yellow at a temperature of _______ degree C.

Balochistan Mock 2
Physics
Dawn of Modern Physics
A) 900
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B) 500
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C) 1300
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D) 1600
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When a body moves in a straight line then it’s displacement concides with:

Balochistan Mock 2
Physics
Forces and Motion
A) Distance
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B) Force
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C) Acceleration
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D) Length
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If the decay or disintegration constant of a radioactive substance is λ, then its half-life and mean life are respectively

Balochistan Mock 2
Physics
Nuclear Physics
Radioactivity
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 child is swinging a swing, the minimum and maximum heights of swing are 0.75 m and 2 m respectively. The maxima velocity of the swing is:

Balochistan Mock 2
Physics
Work, Power & Energy
A) 5 m/s
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B) 10 m/s
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C) 15 m/s
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D) 20 m/s
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The slope of displacement-time graph has the unit:

Balochistan Mock 2
Physics
Forces and Motion
A) m
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B) s
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C) m/s²
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D) m/s
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When an ideal gas of constant mass is heated in a container of fixed volume, what is the reason for the increase in pressure of the gas?

Balochistan Mock 2
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) The number of molecules per unit volume increases
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B) The molecules occupy greater volume of the container
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C) The average force per impact at the container wall increases
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D) The molecules collide with each other with greater force
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The third law of motion explains:

Balochistan Mock 2
Physics
Forces and Motion
A) The effect of force
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B) The existence of a force
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C) The existence of two forces
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D) The existence of a pair of forces in nature
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In an electronic transition, what can the atom not emit?

Balochistan Mock 2
Physics
Atomic Spectra
Bohrs Model of the Hydrogen Atom
A) Gamma rays
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B) Infrared radiation
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C) Ultraviolet radiation
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D) Visible light
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The angular velocity of the minute hand of a clock is

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) 2π/60rads-1
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B) π/24rads-1
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C) 2π/3600rads-1
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D) π/3600rads-1
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When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by

Balochistan Mock 2
Chemistry
Circular Motion & Momentum
A) Mass of body
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B) Tension in the string
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C) Velocity of body
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D) Centripetal acceleration
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The change in resistance of metallic conductor at temperature below 0 degrees is:

Balochistan Mock 2
Physics
Current Electricity
Ohms Law
A) Non-linear
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B) Curve
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C) Linear
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D) Curvilinear
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Velocity of sound in air is 332m/s. Velocity of sound in vacuum would be:

Balochistan Mock 2
Physics
Wave Motion and Sound
A) More than 332m/s
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B) Less than 332m/s
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C) 332m/s
Show Explanation
D) Zero
Show Explanation

A magnetic field is produced by:

Balochistan Mock 2
Physics
Magnetism and Electromagnetic Induction
Force on a Current Carrying Conductor in a Uniform Magnetic Field
A) Moving charges
Show Explanation
B) Stationary charges
Show Explanation
C) Both moving and stationary charges
Show Explanation
D) Only ions
Show Explanation

Magnetic force on a charged particle is:

Balochistan Mock 2
Physics
Magnetism and Electromagnetic Induction
Force on a Current Carrying Conductor in a Uniform Magnetic Field
A) QvBl
Show Explanation
B) None of these
Show Explanation
C) QvB cosθ
Show Explanation
D) QvB sinθ
Show Explanation

The force between two charges Q and q, separated by a distance is F. What will be the force between them when the distance between them is d/2?

Balochistan Mock 2
Physics
Electrostatics
Columbs Law
A) 4 F
Show Explanation
B) 2 F
Show Explanation
C) F
Show Explanation
D) F/2
Show Explanation

In the SI system of units, the centripetal force is measured in?

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) J
Show Explanation
B) N
Show Explanation
C) T
Show Explanation
D) W
Show Explanation

The parallel metal plates of the capacitor are separated by:

Balochistan Mock 2
Physics
Electrostatics
Capacitor
A) Insulators
Show Explanation
B) Isolators
Show Explanation
C) Capacitors
Show Explanation
D) Resistors
Show Explanation

In the SI system of units, the centripetal force is measured in?

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) J
Show Explanation
B) N
Show Explanation
C) T
Show Explanation
D) W
Show Explanation

Magnetic flux is zero when angle between magnetic field and vector area is:

Balochistan Mock 2
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) Zero degree
Show Explanation
B) 90 degree
Show Explanation
C) 60 degree
Show Explanation
D) 30 degree
Show Explanation

The ratio of the number of turns in primary and secondary coils of a transformer is 1:20. The ratio of the currents in the primary and secondary will be

Balochistan Mock 2
Physics
Magnetism and Electromagnetic Induction
Transformers
A) 1:20
Show Explanation
B) 20:1
Show Explanation
C) 1:400
Show Explanation
D) 400:1
Show Explanation

Object A has a charge of 15 mC, and object B has a charge of 10 mC. Which statement is true about the electric forces on the objects?

Balochistan Mock 2
Physics
Electrostatics
Columbs Law
A) FAB = -3 FBA
Show Explanation
B) FAB = – FBA
Show Explanation
C) 3 FAB = – FBA
Show Explanation
D) -3 FAB = 2 FBA
Show Explanation

If a wave can be polarized, it means, it is:

Balochistan Mock 2
Physics
Oscillations and Simple Harmonic Motion
A) Longitudinal wave
Show Explanation
B) Stationary wave
Show Explanation
C) Superimposed wave
Show Explanation
D) Transverse wave
Show Explanation

A block hangs freely from the end of a spring. A boy then slowly pushes the block upwards so that the spring becomes strain free. The gain in gravitational potential energy of the block during this process is equal to:

Balochistan Mock 2
Physics
Work, Power & Energy
A) work done by the boy against the gravitational force acting on the block
Show Explanation
B) loss of energy stored in the spring minus the work done by the tension in the spring
Show Explanation
C) work done on the block by the boy plus the loss of energy stored in the spring
Show Explanation
D) work done on the block by the boy minus the work done by the tension in the spring
Show Explanation

A second pendulum starts its oscillation from the extreme position. What is the ratio of it’s amplitude to the displacement after 7 seconds?

Balochistan Mock 2
Physics
Oscillations and Simple Harmonic Motion
A) 1:2
Show Explanation
B) 1:4
Show Explanation
C) 1:14
Show Explanation
D) Infinity
Show Explanation

Assertion: In n-type semiconductor electrons are the majority charge carriers and holes are minority charge carriers.
Reason: n-type semiconductor is electrically neutral.

Balochistan Mock 2
Physics
Electronics
Semiconductors
A) If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
Show Explanation
B) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
Show Explanation
C) If Assertion is true statement but Reason is false.
Show Explanation
D) If both Assertion and Reason are false statements.
Show Explanation

Which one of the following is not electromagnetic in nature.

Balochistan Mock 2
Physics
Electromagnetic Waves
A) X-rays
Show Explanation
B) Gamma rays
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C) Cathode rays
Show Explanation
D) Infrared rays
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Acceleration in the simple pendulum is always _______ to displacement.

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) Inversely proportional
Show Explanation
B) Directly proportional
Show Explanation
C) Acting positive
Show Explanation
D) Independent
Show Explanation

On a planet, a vertically-launched projectile takes 12.5 s to return to its starting position. The projectile gains a maximum height of 170 m. The planet does not have an atmosphere. What is the acceleration of free fall on this planet?

Balochistan Mock 2
Physics
Forces and Motion
Motion in Two Dimensions
A) 2.2 m s−2
Show Explanation
B) 8.7 m s−2
Show Explanation
C) 27 m s−2
Show Explanation
D) 54 m s−2
Show Explanation

Which type of energy does the capacitor store?

Balochistan Mock 2
Physics
Electrostatics
Capacitor
A) Kinetic
Show Explanation
B) Potential
Show Explanation
C) Thermal
Show Explanation
D) Light
Show Explanation

Power developed by a person on eating 100g of ice per minute is (Latent heat of ice is 80 cal/g):

Balochistan Mock 2
Physics
Work, Power & Energy
A) 130 W
Show Explanation
B) 560 cal/sec
Show Explanation
C) 560 J/sec
Show Explanation
D) none of these
Show Explanation

The angular measurement is known as _____ measurement

Balochistan Mock 2
Physics
Circular Motion & Momentum
A) parameter
Show Explanation
B) area
Show Explanation
C) circumference
Show Explanation
D) all of these
Show Explanation

The oscillating object overshoots the rest position due to:

Balochistan Mock 2
Physics
Oscillations and Simple Harmonic Motion
A) restoring force
Show Explanation
B) inertia
Show Explanation
C) gravitational potential energy
Show Explanation
D) elastic potential energy
Show Explanation

In Davisson-Germer experiment, the diffracted electron beam from crystal shows

Balochistan Mock 2
Physics
Dawn of Modern Physics
Wave Nature of Particles
A) Particle property
Show Explanation
B) Light property
Show Explanation
C) Wave property
Show Explanation
D) Quantum property
Show Explanation

The valence band and conduction band of a solid overlap at low temperature, the solid may be:

Balochistan Mock 2
Physics
Heat and Thermodynamics
A) a metal
Show Explanation
B) a semiconductor
Show Explanation
C) an insulator
Show Explanation
D) none of these
Show Explanation

A body of mass 5 kg is moving with a momentum of 10 kg m/s. A force of 0.2 N acts on it in the direction of motion of the body for 10 s. The increase in it’s kinetic energy is:

Balochistan Mock 2
Physics
Work, Power & Energy
A) 2.8 J
Show Explanation
B) 3.2 J
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C) 3.8 J
Show Explanation
D) 4.4 J
Show Explanation

Select the option which fits appropriately in the blank:

Annie and her brothers __________ at school.

Balochistan Mock 2
English
Fill in the blank
A) Is
Show Explanation
B) Are
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C) Are being
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D) Have
Show Explanatio

Sameer __________ in the park every day.

Balochistan Mock 2
English
Tenses and Sentence Structure
A) Run
Show Explanation
B) Runs
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C) Running
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D) Walk
Show Explanation

Choose the correct spelling of the word:

Balochistan Mock 2
English
Key Vocabulary
A) Prettiest
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B) Prettyest
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C) Pretiest
Show Explanation
D) Preetiest
Show Explanation

Select the option which fits appropriately in the blank:

We shall _________ there for a week.

Balochistan Mock 2
English
Fill in the blank
A) Be going
Show Explanation
B) Has been gone
Show Explanation
C) Has going
Show Explanation
D) Been going
Show Explanation

Which verb is NOT in the present tense?

Balochistan Mock 2
English
Tenses and Sentence Structure
A) She listened
Show Explanation
B) She talks
Show Explanation
C) She waits
Show Explanation
D) She eats
Show Explanation

What type of sentence is this?

When I go swimming, I have to keep my eyes closed underwater.

Balochistan Mock 2
English
Tenses and Sentence Structure
A) Complex
Show Explanation
B) Simple
Show Explanation
C) Compound
Show Explanation
D) None
Show Explanation

Choose the nearest meaning to the following word:

Relinquish

Balochistan Mock 2
English
Key Vocabulary
A) Use
Show Explanation
B) Surrender
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C) Increase
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D) Retain
Show Explanation

Choose the option with the nearest meaning to the following word:

Waft

Balochistan Mock 2
English
Key Vocabulary
A) Wave
Show Explanation
B) Drift
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C) Stump
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D) Keep
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Select the option which fits appropriately in the blank:

Dan __________ a lot of friends.

Balochistan Mock 2
English
Tenses and Sentence Structure
A) Have
Show Explanation
B) Has
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C) Is having
Show Explanation
D) Having
Show Explanation

Sumafra was surprised when her boss didn’t ______ the dinner that they had at the restaurant.

Balochistan Mock 2
English
Grammar and Punctuation
A) Buy
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B) Pay
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C) Pay for
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D) Spend
Show Explanation

I like ________ blue T-shirt over there better than ________ red one.

Balochistan Mock 2
English
Fill in the blank
A) A…a
Show Explanation
B) A…an
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C) The…a
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D) The…the
Show Explanation

Choose the correct spelling of the word:

Balochistan Mock 2
English
Grammar and Punctuation
A) Something
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B) Somthing
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C) Sumthing
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D) Sumthin
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Select the option which fits appropriately in the blank:

My father often ______ here.

Balochistan Mock 2
English
Fill in the blank
A) Come
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B) Came
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C) Comes
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D) Coming
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Select the option which fits appropriately in the blank:

It will _____ me a lot of money.

Balochistan Mock 1
English
Grammar and Punctuation
A) Costs
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B) Cost
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C) Costed
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D) Is costing
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Find the error in the following sentence:

“Even if the doctor puts in his best efforts, he could not succeed in saving the patient.”

Balochistan Mock 2
English
Identify errors in sentence
A) Even if the doctor
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B) Put in his best efforts, he
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C) Could not succeed in
Show Explanation
D) Saving the patient.
Show Explanation

My parents __________ near Lahore.

Balochistan Mock 2
English
Tenses and Sentence Structure
A) Living
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B) Are living
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C) Lives
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D) Live
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There was _____ article about pollution in _____ paper.

Balochistan Mock 2
English
Fill in the blank
A) A..an
Show Explanation
B) An…the
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C) A…the
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D) A…a
Show Explanation

You will find more information in the ___________.

Balochistan Mock 2
English
Fill in the blank
A) Attached to file
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B) Attached file
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C) Attachment file
Show Explanation
D) File what is attached
Show Explanation

The attraction between water molecules and cell wall of xylem is termed as:

Balochistan Mock 2
Biology
Transport
A) Cohesion
Show Explanation
B) Tension
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C) Adhesion
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D) Imbibition
Show Explanation

Which of the following is an unsaturated fatty acid?

Balochistan Mock 2
Biology
Biological Molecules
Lipids
A) Oleic acid
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B) Palmitic acid
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C) Butyric acid
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D) Acetic acid
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Which property of water helps to maintain the integrity of lipid-containing membranes?

Balochistan Mock 2
Biology
Biological Molecules
Water
A) Specific Heat Capacity
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B) Hydrogen Bonding
Show Explanation
C) Cohesion and Adhesion
Show Explanation
D) Hydrophobic exclusion
Show Explanation

Which of the following is NOT an example of evidence supporting the endosymbiotic theory?

Balochistan Mock 2
Biology
Evolution
A) Mitochondria contain their own DNA, which is a single circular chromosome.
Show Explanation
B) . Mitochondria and other plastids multiply by binary fission.
Show Explanation
C) Mitochondria have their own ribosomes, which are 70S
Show Explanation
D) None of these
Show Explanation

In electron transport chain, ATP synthesis takes place when electrons move from:

Balochistan Mock 2
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
A) Primary Electron Acceptor (PEA) to Plastoquinone (Pq)
Show Explanation
B) Plastoquinone (Pq) to cytochromes
Show Explanation
C) Cytochrome to Plastocyanin (Pc)
Show Explanation
D) Plastocyanin (Pc) to Photosystem I (PS I)
Show Explanation

Competitive inhibitors and real substrate often have similar?

Balochistan Mock 2
Biology
A) Structures
Show Explanation
B) Chemical properties
Show Explanation
C) Physical properties
Show Explanation
D) None of these
Show Explanation

Breathing is considered as a:

Balochistan Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) Chemical process
Show Explanation
B) Biochemical process
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C) Mechanical process
Show Explanation
D) Both A and B
Show Explanation

Nitrogenous bases such as choline and serine are a significant part of which of the following?

Balochistan Mock 2
Biology
Biological Molecules
Nucleic Acids
A) Sphingolipids
Show Explanation
B) Phospholipids
Show Explanation
C) Phosphodiester
Show Explanation
D) None of these
Show Explanation

Most reflex arcsare:

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) Monosynaptic reflex
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B) Polysynaptic reflex
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C) Hemi Synaptic Reflex
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D) None of these
Show Explanation

At what times is there a no net gaseous exchange between leaves and the atmosphere?

Balochistan Mock 2
Biology
Bioenergetics
Introduction to Photosynthesis
A) Day
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B) Night
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C) Dawn and Dusk
Show Explanation
D) Midnight
Show Explanation

Example of bacteria requiring low concentration of oxygen is?

Balochistan Mock 2
Biology
Kingdom Prokaryote
Motility and Nutrition in Bacteria
A) Spirochete
Show Explanation
B) Seudomonas
Show Explanation
C) E.coli
Show Explanation
D) Campylobacter
Show Explanation

Your neighbor has a flower garden in which there are red flowers and white Howe flowers. These flowers are diploid organisms, and flower color is an autosomal trait. The gene for red flowers (R) is dominant, while the gene for white flowers (r) is recessive. Which of the following could be the genotype of a red flower?

Balochistan Mock 2
Biology
Variation and Genetics
Mendelian Inheritance
A) Rr
Show Explanation
B) Both RR and Rr
Show Explanation
C) Only RR
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D) rr
Show Explanation

The dense fluid filled region in the chloroplast is?

Balochistan Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Grana
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B) Stroma
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C) Thylakoid
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D) Intergrana
Show Explanation

Gray matter is primarily composed of:

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) Axons
Show Explanation
B) Synapse
Show Explanation
C) Neuron somas
Show Explanation
D) None of these
Show Explanation

The voice box leads to the trachea which is also called

Balochistan Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) Bronchi
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B) Bronchioles
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C) Windpipe
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D) Alveolar duct
Show Explanation

Water acts as a universal solvent because of:

Balochistan Mock 2
Biology
Biological Molecules
Water
A) Heat of vaporization
Show Explanation
B) Hydrogen bonding
Show Explanation
C) High polarity
Show Explanation
D) Cohesion and adhesion
Show Explanation

In 1959, Koshland proposed which of the following?

Balochistan Mock 2
Biology
A) Unit membrane model
Show Explanation
B) Fluid mosaic model
Show Explanation
C) Reflective index model
Show Explanation
D) Induced fit model
Show Explanation

Carotenoids perform protective function in which of the following organism?

Balochistan Mock 2
Biology
Biological Molecules
Lipids
A) Animals
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B) Plants
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C) Both
Show Explanation
D) None of these
Show Explanation

What is the function of the lysozyme enzyme released by bacteriophages?

Balochistan Mock 2
Biology
Bio-diversity | Variety of Life
A) Injecting DNA
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B) Replication
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C) Dissolve bacterial cell wall
Show Explanation
D) All of these
Show Explanation

After fertilisation the zygote increases in size and travels down the Fallopian tube to become embedded in the walls of the womb. This process is called:

Balochistan Mock 2
Biology
Reproduction
Reproduction in Females
A) Ovulation
Show Explanation
B) Implantation
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C) Conception
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D) Menstruation
Show Explanation

Choose the region of spinal cord:

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) Cervical
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B) Lumbar
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C) Thoracic
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D) All of these
Show Explanation

Which portion of the brain is primarily responsible for transmitting the information to other parts of the nervous system?

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) White matter
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B) Grey matter
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C) Medulla
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D) All A, B and C
Show Explanation

Which of the following statements is incorrect?

Balochistan Mock 2
Biology
A) The competitive inhibitor affects the rate of breakdown of the enzyme-substrate complex
Show Explanation
B) The presence of the competitive inhibitor decreases the Km of the enzyme for the substrate
Show Explanation
C) A competitive inhibitor reacts reversibly with the enzyme to form an enzyme-inhibitor complex
Show Explanation
D) In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme
Show Explanation

Which among the following is a diploblastic organism?

Balochistan Mock 2
Biology
Kingdom Animalia
Classification according to Coelem
A) Hydra
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B) Squid
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C) Earthworm
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D) Crabs
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To form a female zygote, the sperm cell must contribute which chromosome?

Balochistan Mock 2
Biology
Reproduction
Reproduction in Males
A) X
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B) 2X
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C) Y
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D) XY
Show Explanation

The main unit of the thick filament is:

Balochistan Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Myofibril
Show Explanation
B) Z-line
Show Explanation
C) Myosin
Show Explanation
D) Actin
Show Explanation

The functional parts of forebrain are:

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) Thalamus and limbic system
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B) Cerebrum, limbic system and thalamus
Show Explanation
C) Thalamus and cerebrum
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D) Cerebrum and limbic system
Show Explanation

Suggest which among the following is not a function attributed to endoplasmic reticulum?

Balochistan Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Detoxification of poisons and drugs
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B) Digestion/egestion of foreign materials outside the cell
Show Explanation
C) Manufacture of fat and lipid molecules
Show Explanation
D) Biogenesis of membrane proteins
Show Explanation

Centipedes belong to which class of arthropods?

Balochistan Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Arachnida
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B) Insecta
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C) Myriapoda
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D) Cephalopoda
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Which of the following cell organelles involved in the synthesis of cell wall and middle lamella?

Balochistan Mock 2
Biology
Cell Structure and Function
Cell Wall
A) Endoplasmic reticulum
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B) Golgi apparatus
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C) Lysosomes
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D) Peroxisomes
Show Explanation

The nervous system of nematodes consists of which of the following;

Balochistan Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Ventral nerve cord
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B) Lateral nerve cord
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C) Dorsal nerve cord
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D) All of these
Show Explanation

NAD is an example of:

Balochistan Mock 2
Biology
Biological Molecules
Nucleic Acids
A) Mononucleotide
Show Explanation
B) Dinucleotide
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C) Trinucleotide
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D) Tetranucleotide
Show Explanation

Nutrition to egg in ovary is provided by which of the following?

Balochistan Mock 2
Biology
Growth and Development
Embryonic Development
A) Germ cells
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B) Milk cells
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C) Follicle cells
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D) All of these
Show Explanation

What is the most important structure between body and brain?

Balochistan Mock 2
Biology
Coordination and Control
Central Nervous System
A) Neck
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B) Spinal cord
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C) Blood vessels
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D) Skeleton
Show Explanation

Most enzymes have an optimum temperature of around:

Balochistan Mock 2
Biology
A) 30 C
Show Explanation
B) 40 C
Show Explanation
C) 50 C
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D) 20 C
Show Explanation

Which of the following is a function of endoplasmic reticulum?

Balochistan Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Transport of molecules
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B) Mechanical support
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C) Conjugated molecules synthesis
Show Explanation
D) All of these
Show Explanation

What is the name of the tube that carries sperm and urine out of the human body?

Balochistan Mock 2
Biology
Reproduction
Reproduction in Males
A) Penis
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B) Seminal vesicles
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C) Urethra
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D) Ureter
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Lipids store double the amount of energy as compared to carbohydrates because of:

Balochistan Mock 2
Biology
Biological Molecules
Lipids
A) High proportion of oxygen
Show Explanation
B) High C-O ratio
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C) Low proportion of Carbon
Show Explanation
D) High proportion of C-H
Show Explanation

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

Balochistan Mock 2
Biology
A) Enzymes are unbiased for the substrate
Show Explanation
B) Enzymes can modify their active sites
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C) Enzymes are restricted to one reaction type
Show Explanation
D) An enzyme can catalyze variety of reactions
Show Explanation

During inspiration, the area of the thoracic cavity will ___________.

Balochistan Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) Contract
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B) Increase
Show Explanation
C) Decrease
Show Explanation
D) Damage
Show Explanation

How many thin filaments are arrayed around each thick filament within a sarcomere?

Balochistan Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) 2
Show Explanation
B) 4
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C) 6
Show Explanation
D) 7
Show Explanation

How many monosaccharide molecules do oligosaccharides yield upon hydrolysis?

Balochistan Mock 2
Biology
Biological Molecules
Carbohydrates
A) 2
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B) 5
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C) 10
Show Explanation
D) All of these
Show Explanation

Which of the following processes does NOT need Pyruvic Acid as a substrate?

Balochistan Mock 2
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
A) Alcoholic fermentation
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B) Calvin cycle
Show Explanation
C) Aerobic respiration
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D) Lactic Acid fermentation
Show Explanation

Many sarcomeres in series make up the length of a:

Balochistan Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Microtubules
Show Explanation
B) Myofibril
Show Explanation
C) Myosin filament
Show Explanation
D) M-line
Show Explanation

Which statement correctly describes, why ions are unable to cross the plasma membrane without channel proteins?

Balochistan Mock 2
Biology
Cell Structure and Function
Plasma Membrane
A) They are unable to cross the hydrophilic phosphate heads of the lipid bilayer.
Show Explanation
B) They are unable to cross the hydrophobic tails of the lipid bilayer.
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C) They are unable to cross both the phosphate heads and fatty acid chains of the lipid bilayer.
Show Explanation
D) They are too big to cross the plasma membrane.
Show Explanation

Sycon is an example of:

Balochistan Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Platyhelminthes
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B) Annelida
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C) Protozoa
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D) Porifera
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Which of the following is a copper containing protein in electron transport chain?

Balochistan Mock 2
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) Plastoquinone
Show Explanation
B) Cytochrome – C
Show Explanation
C) Plastocyanin
Show Explanation
D) Ferredoxin
Show Explanation

What type of sentence is this?

When I go swimming, I have to keep my eyes closed underwater.

Balochistan Mock 2
English
Tenses and Sentence Structure
A) Complex
Show Explanation
B) Simple
Show Explanation
C) Compound
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D) None
Show Explanation

If an individual does not reproduce then it’s degree of fitness is?

Balochistan Mock 2
Biology
Evolution
A) 100
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B) 50
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C) 40
Show Explanation
D) 0
Show Explanation