Chemistry Practice Tests 3

Created by Ali Durrani

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Chemistry Practice Test 3

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1 / 100

Category: Chemistry Ch 13 Class 12

Which of the following carboxylic acids will be the most acidic?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) CH3CHClCH2COOH

B) CH3CH2CCl2COOH

C) CH3CH2CHClCOOH

D) CH3CH2CH2COOH

2 / 100

Category: Chemistry Ch 9 Class 12

Reduction of benzene is presence of Ni gives:

NUMS 2019 Cancelled
Chemistry
Hydrocarbons
Elimination Tool:

A) Cyclohexane

B) Heterocyclic

C) Alicyclic

D) Unsaturated aliphatic

3 / 100

Category: Chemistry Ch 7 Class 11

For a chemical reaction A -> B, the threshold energy of the reaction is 37 kJ/mole. The average internal energy of A is 12 kJ/Mole. What will be the activation energy of A?

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

A) 43 K.J/Mole

B) 37 K.J/Mole

C) 25 KJ/Mole

D) 19 K.J/Mole

4 / 100

Category: Chemistry Ch 6 Class 11

The geometry of H2S and its dipole moment are:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Angular and non – zero

B) Angular and zero

C) Linear and zero

D) Linear and non – zero

5 / 100

Category: Chemistry

Q.153 The properties of liquid crystals are intermediate b/w crystals and

A. Anisotropic liquids

B. Nematic liquids

C Isotropic liquids

D. Liquids

6 / 100

Category: Chemistry Ch 14 Class 12

The sugar unit in DNA molecule is:

NUMS 2019 Reconduct
Chemistry
Macromolecules
Elimination Tool:

A) Ribose

B) 2 – deoxyribose

C) 3 – deoxyribose

D) 2 – deoxypentose

7 / 100

Category: Chemistry

Q.176 Quantum number values for 2p orbítals are

A. n=2,l=1

B. n= 1.l=2

C. n =1,1l=0

D. n=2,l=2

8 / 100

Category: Chemistry Ch 15 Class 12

In Paper industry, sodium sulphite is buffered with

Sodium carbonate

Sodium hydroxide

Sodium acetate

Both a and b

9 / 100

Category: Chemistry Ch 10 Class 11

Current in electrolysis is carried through:

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Free electrons

B) Positive Ions

C) Negative Ions

D) Both B and C

10 / 100

Category: Chemistry Ch 7 Class 12

Which class of compounds cannot show positional isomerism?

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) alkane

B) alkene

C) alkyne

D) alcohol

11 / 100

Category: Chemistry Ch 6 Class 11

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) S-S overlapping

B) S-Pz overlapping

C) S-Px overlapping

D) Pz – Pz overlapping

12 / 100

Category: Chemistry Ch 15 Class 12

The unit ___ is commonly used by meteorologists

PMC Sample 3
Chemistry
Environmental Chemistry
Elimination Tool:

A) Bar

B) centibar

C) millibar

D) kilobar

13 / 100

Category: Chemistry Ch 13 Class 12

Which one is the carbonyl protecting group?

Carboxylic acid

Ester

Alcohol

Amino Derivatives

14 / 100

Category: Chemistry Ch 4 Class 11

if the crystal structure of Graphite is Hexagonal, the crystal system of Diamond will be:

Tetrahedral

Pyramidal

Cubic

Pentagonal

15 / 100

Category: Chemistry Ch 11 Class 11

For a reaction 2A + 3B -> C
The rate law expression is given by rate = K [A]1[B]2. The order of the reaction with respect to A, B and overall order of reaction are:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) 2, 1, 3

B) 1, 2, 3

C) 0, 1, 2

D) 2, 1, 0

16 / 100

Category: Chemistry Ch 11 Class 12

Phenol reacts with CH3COCl to give:

NUMS 2019 Reconduct
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Acid

B) Ester

C) Alcohol

D) Aldehyde

17 / 100

Category: Chemistry Ch 6 Class 12

Which of the following states of copper Is more stable?

Cu+2

Cu+1

Both a and b

Depends on environment

18 / 100

Category: Chemistry

The color of transition metal complexes is due to transition of electrons between:

NUMS Mock 3
Chemistry
d and f Block Elements

A) p to d orbitals

B) d to d orbitals

C) p to p orbitals

D) d to p orbitals

19 / 100

Category: Chemistry Ch 14 Class 12

_____ is a macromolecule found in blood.

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

A) Hemoglobin

B) Plasma

C) Creatinine

D) Plasmids

20 / 100

Category: Chemistry Ch 1 Class 12

Smallest element in the periodic table is?

Hydrogen

Fluorine

Lithium

Uranium

21 / 100

Category: Chemistry

Q.108 Temperature and volume in an experiment are part of

A. Surroundings

B. System

C. State of a system

D. All of these

22 / 100

Category: Chemistry

Stronger the oxidizing agent, higher is the:

NUMS Mock 2
Chemistry
Electrochemistry

A) Emf of cell

B) Oxidation potential

C) Reduction potential

D) Redox potential

23 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following is an example of a condensation polymer?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyvinyl Chloride

B) Polystyrene

C) Polyethene

D) Polyamide

24 / 100

Category: Chemistry

Q.32 vapor pressure is measured by calculating difference in liquid pressure and

A mercury pressure

B. glass pressure

C. atmospheric pressure

D. container pressure

25 / 100

Category: Chemistry Ch 2 Class 11

78 g of a hydrocarbon occupies 22.414 ml of volume at S.T.P. The empirical formula of the hydrocarbon is CH. The molecular formula of this hydrocarbon is:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Stoichiometry
Analytical Chemistry
Elimination Tool:

A) C2H4

B) C6H6

C) C8H8

D) C4H4

26 / 100

Category: Chemistry Ch 2 Class 12

Which of the following compounds is formed when sodium burns in excess of air?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Na2O

B) Na2O3

C) Na2O2

D) NaO2

27 / 100

Category: Chemistry

Q.33 Rate constant is denoted by?

A. k

B. kr

C. kv

D.ks

28 / 100

Category: Chemistry

Q.168 In aldol condensation, nucleophile is_

A. Hydroxyl ion

B. Carbocation

C. Carbanion

D. Water

29 / 100

Category: Chemistry Ch 9 Class 12

Methane gas is also known as

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Marsh gas

B) Pepper gas

C) Mustard gas

D) None of the above

30 / 100

Category: Chemistry Ch 11 Class 11

Half-life of an element is 5 days. If we have 50,000 of its atoms, then how many atoms would be left after 10 days?

15000

25000

50000

None of these

31 / 100

Category: Chemistry Ch 9 Class 12

Organic compounds in which tetravalency of carbon atom is satisfied are called as ____ ?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Saturated

B) Unsaturated

C) Alkenes

D) Alkynes

32 / 100

Category: Chemistry Ch 3 Class 12

The total number of transition elements is:

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
Elimination Tool:

A) 58

B) 48

C) 30

D) 25

33 / 100

Category: Chemistry

Q.113 From which of the following ketone can be prepared?

A. Propyne

B. Secondary alcohol

C. Ca Acetate

D. All of these

34 / 100

Category: Chemistry Ch 6 Class 11

The hybridization of atomic orbitals of N2+, NO3-, and NH4+are, respectively:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp, sp2, sp3

B) Sp, sp3, sp2

C) Sp2, sp, sp3

D) Sp2, sp3, sp

35 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of Divinyl acetylene is:

NUMS 2019 Reconduct
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 1, 5 – Hexadiyne – 3 – ene

B) 1, 5 – Hexadiene 3 – yne

C) 3 – Hexene – 1,5 – diyne

D) 3 – Hexyne – 1 , 5 – diene

36 / 100

Category: Chemistry Ch 3 Class 12

Impurities of lead in silver are removed by:

NUMS 2016
Chemistry
d and f Block Elements
Elimination Tool:

A) Parke’s process

B) Solvay process

C) Cyanide process

D) Amalgamation process

37 / 100

Category: Chemistry Ch 14 Class 12

Allotropes are of same?

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

A) Compounds

B) Molecules

C) Ions

D) Elements

38 / 100

Category: Chemistry Ch 8 Class 12

Which one of these is/are gasses?

Methane

Ethane

Propane

All of these

39 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is more soluble in water?

PMC Sample 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethanol

B) Phenol

C) Hexanol

D) Dimethyl ether

40 / 100

Category: Chemistry Ch 15 Class 12

The temperature zones In rotary kilns are:

5

4

6

None of these

41 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is secondary pollutant?

NUMS 2019 Reconduct
Chemistry
Environmental Chemistry
Elimination Tool:

A) CO

B) SO2

C) PAN

D) NO2

42 / 100

Category: Chemistry

Hydrolysis accompanied by bond cleavage is called

Hydrogenation

Hydration

Partial hydration

Hydrogenolysis

43 / 100

Category: Chemistry Ch 10 Class 11

In Lead-Acid battery, product formed at anode during discharging is

PbSO4

Pb

SO2

SO4

44 / 100

Category: Chemistry Ch 3 Class 11

If we take some water at 0oC and start heating it,we find that in the temperature range 0oC to 4oC:

NUMS 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) It expands on heating

B) It contracts on heating

C) Both

D) None

45 / 100

Category: Chemistry

Q.118 Most of the enzyme reactions are______________?

A. Reversible

B. Irreversible

C. Condensation

D. Oxidation

46 / 100

Category: Chemistry

The carbonates of alkali metals are soluble in water except:

NUMS Mock 3
Chemistry
s and p Block Elements

A) K2CO3

B) Li2CO3

C) Na2CO3

D) Rb2CO3

47 / 100

Category: Chemistry Ch 10 Class 11

Standard reduction potential of F2, Br2 is:

+2.87, +1.08

+0.332, +2.87

-0.78, -1.66

None of the:

48 / 100

Category: Chemistry Ch 14 Class 12

Teflon contains which of the following halide?

Chlorine

Bromine

Fluorine

All of these

49 / 100

Category: Chemistry Ch 11 Class 12

25 to 35 degree centigrade temperature is good for which of the following process?

Dow's method

Preparation of formalin

Fermentation

Methanol

50 / 100

Category: Chemistry Ch 3 Class 11

An example of a solution not in equilibrium is:

NTS 2016 DUHS & JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) chemical pH indicator

B) acid/base buffer

C) anhydrous solution

D) hypotonic solution

51 / 100

Category: Chemistry

When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS Mock 3
Chemistry
Thermochemistry

A) -484 KJmol-1

B) -242 KJmol-1

C) -121 KJmol-1

D) +242 KJmol-1

52 / 100

Category: Chemistry Ch 3 Class 11

Rate of effusion of a gas depends upon:

NUMS 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) size of pin hole

B) pressure

C) temperature

D) molecular mass

E) all of above

53 / 100

Category: Chemistry

The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

NUMS Mock 4
Chemistry
Alkyl Halides and Amines

A) CH3CONH2

B) CH3CH2NH2

C) (CH3)2CHCO2H

D) CH3CH2CO2H

54 / 100

Category: Chemistry Ch 10 Class 12

Elimination from 2 – bromobutane results in:

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Equimolar mixture of 1 and 2 – butene

B) Predominantly 2 – butene

C) Predominantly 1- butane

D) 2 – butyne

55 / 100

Category: Chemistry Ch 4 Class 11

Viscosity of HF is: c) y d) a) Greater than 1120 b) Smaller than F120 c) Equal to HIO d) Plane of these

Greater than H2O

Smaller than H2O

Equal to H2O

None of these

56 / 100

Category: Chemistry

Example of nucleophile is:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) BF3

B) SO3

C) AlCl3

D) CN

57 / 100

Category: Chemistry Ch 3 Class 11

Which of the following pairs of gases have same rate of diffusion:

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) CO2 and N2O

B) CO2 and CO

C) NO2 and CO2

D) CO2 and N2O4

58 / 100

Category: Chemistry Ch 6 Class 11

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Only ionic

B) Covalent and coordinate

C) Only covalent

D) Covalent and ionic

59 / 100

Category: Chemistry Ch 8 Class 11

Which of the following factor(s) affect a reversible chemical reaction in accordance with the Le – Chatelier Principle?

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Pressure

B) Temperature

C) Concentration

D) Pressure, concentration and temperature

60 / 100

Category: Chemistry

For a single step reaction A ->B + 2C, the rate law is:

NUMS Mock 3
Chemistry
Reaction Kinetics

A) Rate = k

B) Rate = k[A][B]

C) Rate = k[A]

D) Rate = k[B]

61 / 100

Category: Chemistry

Copper is a typical transition metal. Its atomic number is 29. In which oxidation state does it have a partially filled orbital in d-subshell?

NUMS Mock 2
Chemistry
d and f Block Elements

A) Cu

B) Cu+

C) Cu-

D) Cu2+

62 / 100

Category: Chemistry Ch 2 Class 12

The ionization of Hydrogen atom gives:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) hydride ion

B) hydronium ion

C) proton

D) hydroxyl ion

63 / 100

Category: Chemistry Ch 8 Class 12

KOLBE’s method is used to prepare?

Ethane

Ethene

Ethyne

All of these

64 / 100

Category: Chemistry Ch 6 Class 11

Bond energy between nitrogen atoms in N2 molecule is:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

B) 820 kJ mol-1

C) 498 kJ mol-1

D) 347 kJ mol-1

E) 946 kJ mol-1

65 / 100

Category: Chemistry Ch 4 Class 11

Crystal structure of diamond is

Trigonal

Tetrahedral

Cubic

None of these

66 / 100

Category: Chemistry Ch 5 Class 12

Which of the following can be bleached using Bleaching power?

Cotton

Wool

Silk

All of these

67 / 100

Category: Chemistry

Q.37 In Lucas test, tertiary alcohols form oily layer of alkyl halid ________?

A. On heating

B. Immediately

C. After 5-10 minutes

D. After 20 minutes

68 / 100

Category: Chemistry Ch 11 Class 12

Higher order alcohols

Have more than 1 carbon

have more than 3 carbons

Have more than 2 carbons

Have more than 4 carbons

69 / 100

Category: Chemistry Ch 13 Class 12

Amino acids are prepared by?

Suckers synthesis

Dow's method

h) Williamson's synthesis

Sabatier-Sendern's synthesis

70 / 100

Category: Chemistry Ch 9 Class 12

Friedel craft’s reaction gives?

Benzene

Nitrobenzene

Toluene

Alkene

71 / 100

Category: Chemistry Ch 13 Class 12

What is the product of both fermentation reactions and fractional distillation:

NTS 2010
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) An ester

B) An acid

C) An alcohol

D) A soap

72 / 100

Category: Chemistry Ch 10 Class 11

Stronger the oxidizing agent, greater is the:

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

A) Oxidation potential

B) Reduction potential

C) Redox potential

D) EMF of cell

73 / 100

Category: Chemistry

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

NUMS Mock 1
Chemistry
Hydrocarbons

A) Benzoic acid

B) Methyl benzene

C) Benzaldehyde

D) Nitrobenzene

74 / 100

Category: Chemistry Ch 8 Class 12

Which one of the following molecules has the shortest distance of carbon atoms?

PreMedPK MDCAT Mock 3
Chemistry
Hydrocarbons
Elimination Tool:

A) CH3- CH3

B) CH2= CH2

C) CH≡ CH

D) CH3- CH2- CH3

75 / 100

Category: Chemistry Ch 15 Class 12

The macronutrients for healthy plant growth are required in per acre.

5g — 200 g

5kg — 200 kg

5g — 2000kg

None of these

76 / 100

Category: Chemistry Ch 16 Class 12

Ozone Is

02

03

04

ps

77 / 100

Category: Chemistry Ch 12 Class 12

Ketones and aldehydes are reduced in the presence of catalyst:

Pd

Al203

R-Mg-X

SOCl2

78 / 100

Category: Chemistry

Example of a nucleophile is:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

A) BF3

B) AlCl3

C) SO3

D) CN

79 / 100

Category: Chemistry Ch 10 Class 11

Highest oxidation state of chlorine Is

+7

-7

+1

−1

80 / 100

Category: Chemistry Ch 11 Class 12

2-methyl 2-propanol is:

Secondary butyl alcohol

Tertiary butyl alcohol

Primary butyl alcohol

Quaternary butyl alcohol

81 / 100

Category: Chemistry Ch 15 Class 12

______ is needed in thyroxine, the hormone of thyroid gland.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) Mg2+

B) K+

C) Ca2+

D) Iodine

82 / 100

Category: Chemistry Ch 5 Class 12

The halogens are known as:

Salt formers

Rare earth elements

Alkali metals

Noble gases

83 / 100

Category: Chemistry

A certain radioactive isotope has a half-life of 50 days. Fraction of the material left behind after 100 days will be:

NUMS Mock 2
Chemistry
Analytical Chemistry

A) 125%

B) 25%

C) 50%

D) 100%

84 / 100

Category: Chemistry

Q.147 Plasma “the fourth state of matter was identified by

A. Berzelius

B. William Crooks

C. Dalton

D. Rutherford

85 / 100

Category: Chemistry Ch 12 Class 12

Ketones undergo reaction with which compound in the presence of acid to form oximes

Hydroxy methane

) Hydroxyl amine

Phenyl hydrazine

) None

86 / 100

Category: Chemistry Ch 9 Class 12

C6H5 Is:

Phenyl

Methyl

Ethyl

Hexyl

87 / 100

Category: Chemistry Ch 2 Class 11

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?

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) 44 dm3

B) 22.4 dm3

C) 33.6 dm3

D) 11.2 dm3

88 / 100

Category: Chemistry Ch 12 Class 12

The general formula for an aldehyde is:

NTS 2010
Chemistry
Aldehydes and Ketones
Elimination Tool:

B) R-COOH

C) R-CO-R

D) R-X

E) R-CHO

89 / 100

Category: Chemistry Ch 11 Class 12

Ethanol, when reacted with PCI5 , gave A, POCl3, and HCI. A reacts with AgNO2 to form B and AgCl. A and B are respectively:

NTS 2014
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) C2H5Cl and C2H5OC2H5

B) C2H6 and C2H5OC2H5

C) C2H5Cl and C2H5NO2

D) C2H6 and C2H5NO2

90 / 100

Category: Chemistry Ch 1 Class 11

Actual yield is always less than theoretical yield due to

PMC Practice 29
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) operational losses

B) reaction reversibility

C) side reaction

D) all of these

91 / 100

Category: Chemistry Ch 9 Class 12

Stability of benzene is due to

Alternate double bonds

Electrons' cloud

Double bonds

Delocalization of electrons

92 / 100

Category: Chemistry Ch 8 Class 12

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

93 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

94 / 100

Category: Chemistry Ch 5 Class 11

When B- particles are sent through a thin metal foil, most of them go straight through the foil as:

NTS 2017
Chemistry
Atomic Structure
Elimination Tool:

A) B- particles are much heavier than electrons

B) B- particles are positively charged

C) Most part of the atom is empty space

D) B- particles move with high velocity

95 / 100

Category: Chemistry Ch 7 Class 12

Carbonyl group is present in

Glycol

Glycerol

Dihydrid alcohol

None of these

96 / 100

Category: Chemistry

If concentration time graph of a reactant indicates a constant half life, then the order reaction with respect to that reactant is:

NUMS Mock 4
Chemistry
Reaction Kinetics

A) Zero order

B) Half order

C) Second order

D) First order

97 / 100

Category: Chemistry Ch 6 Class 11

Geometry of SF6 is:

Octahedral

Hexagonal

Decahedral

Trigonal

98 / 100

Category: Chemistry Ch 11 Class 11

Reaction of Sodium with water is an example of

PMC Sample 3
Chemistry
Reaction Kinetics
Elimination Tool:

A) Reversible reaction

B) Endothermic

C) Irreversible

D) Slow

99 / 100

Category: Chemistry Ch 6 Class 11

The dipole moments of the given molecules (BF3, NF3, NH3) are such that:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) BF3 > NF3>NH3

B) NF3 > BF3> NH3

C) NH3 > NF3 > BF3

D) NH3 >BF3 > NF3

100 / 100

Category: Chemistry

A single Chloride free radical can destroy ozone molecules up to:

NUMS Mock 1
Chemistry
Enviormental Chemistry

A) 100,000

B) 10,000

C) 100,0000

D) 1000

Your score is

The average score is 56%

0%

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