Chemistry Practice Tests 2

Created by Ali Durrani

NET Practice

Chemistry Practice Test 2

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1 / 100

Category: Chemistry Ch 9 Class 12

Acetylene polymerizes to make:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Cyclohexane

B) Benzene

C) Hexane

D) Toluene

2 / 100

Category: Chemistry

In contact process, to which substance adequate quantities of water is added to convert it to sulphuric acid?

NUMS Mock 1
Chemistry
Chemical Equilibrium

A) H2S2O7

B) HSO4-

C) SO3

D) S

3 / 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

4 / 100

Category: Chemistry Ch 15 Class 12

Ozone concentration is measured in:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

A) Debye units

B) Dupont units

C) Debacle units

D) Dobson units

5 / 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

6 / 100

Category: Chemistry Ch 7 Class 12

Aromatic compounds burn with a sooty flame because:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) They are resistant to react with oxygen

B) They have a cyclic structure

C) They have a high percentage of Carbon

D) They have a high percentage of hydrogen

7 / 100

Category: Chemistry Ch 9 Class 12

Name the main product formed as a result of the following reaction

H3C – (CH2)5 – CH3 ————> Product

n-heptane

Conditions: 480 – 550 C, 150 – 399 psi V2O5

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) Benzene

B) Toluene

C) Xylene

D) Cyclohexane

8 / 100

Category: Chemistry Ch 3 Class 11

A crystal system having all sides (a, b and c) unequal and anglesα = β = γ= 90 is:

NUMS 2015
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Cubic

B) Rhombohedral

C) Orthorhombic

D) Hexagonal

9 / 100

Category: Chemistry Ch 4 Class 11

Increasing the temperature of a liquid will decrease all except:

Surface tension

Density

Viscosity

Vapor pressure

10 / 100

Category: Chemistry

Q.78 What Isthe nature of Carbon present in Aldehyde is?

A. Nucleophilic

B. Electrophilic

C. Neutral

D. All of these

11 / 100

Category: Chemistry Ch 7 Class 12

Example of metamerism is:

Dimethyl ether and methyl alcohol

1-Butene and 2-Butene

Diethyl ether and methyl n-propyl ether

n-pentane and iso-pentane

12 / 100

Category: Chemistry Ch 4 Class 11

Which of the following bonds Is the weakest?

Ionic

Covalent

Dative Covalent

Hydrogen bonding

13 / 100

Category: Chemistry Ch 11 Class 12

Either Is dangerous In which of the following states?

Humid

Wet

dry

Hot

14 / 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

15 / 100

Category: Chemistry Ch 7 Class 11

ΔH = ΔE + PΔV is the change in enthalpy at constant ________.

NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:

A) Volume

B) Pressure

C) Temperature

D) Mass

16 / 100

Category: Chemistry Ch 7 Class 12

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

17 / 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

18 / 100

Category: Chemistry

Q.94 Which of the foloving is a strong acia?

A. Ethane

B. Ethyl Chloride

C. Ethanol

D. Pheno

19 / 100

Category: Chemistry

Which enthalpy change is relevant in the following process

Na(s) -> Na (g) ΔH = +107

NUMS Mock 2
Chemistry
Thermochemistry

A) Enthalpy of atomization

B) Enthalpy of fusion

C) Enthalpy of vaporization

D) Enthalpy of formation

20 / 100

Category: Chemistry Ch 3 Class 12

Which one of the following is an acid?

H3BO3

Al(0H)3

Ca(0H)2

NaOH

21 / 100

Category: Chemistry Ch 15 Class 12

CFCs are organic compounds, that are derivatives of saturated hydrocarbons. They have high bond dissociation values therefore they are inert and non-toxic for living organisms.

The word CFCs stands for:

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

A) Chlorofluorocarbons

B) Carbonfluorochlorines

C) Clorofluorocarbonos

D) Chlorofluoridecarbons

22 / 100

Category: Chemistry Ch 2 Class 12

Which of the following do not occur in Free State?

Li

Mg

Both

None of these

23 / 100

Category: Chemistry Ch 1 Class 12

What is a complex/coordination compound?

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) A compound in which a metal atom or ion is covalently bonded with a group of neutral molecules or anions.

B) A compound that contains 2 or more than 2 different elements

C) A compound which has complex molecular geometry

D) A compound that contains a complex ion and can exist independently

24 / 100

Category: Chemistry Ch 13 Class 12

What is correct order of acidic strength?

Carboxylic acid > alcohols > phenol > water

Carboxylic acid > phenol > water > alcohol

Water > alcohol > carboxylic acid > phenol

Phenol > alcohol > water > carboxylic acid

25 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is NOT a “raw material” used in the Solvay process?

NTS 2016 SMBBMC
Chemistry
Macromolecules
Elimination Tool:

A) Sodium Chloride

B) Sodium Carbonate

C) Limestone

D) Ammonia gas

26 / 100

Category: Chemistry Ch 10 Class 12

If any amino acids contain greater number of NH2, it is:

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Acidic

B) Neutral

C) Amphoteric

D) Basic

27 / 100

Category: Chemistry Ch 7 Class 11

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

A) Chemical Equilibrium

B) Chemical Bonding

C) Heat contents of a compound

D) All of these

28 / 100

Category: Chemistry

Which of the following reaction takes place when acetone reacts with HCN?

NUMS Mock 4
Chemistry
Aldehydes and Ketones

A) Electrophilic addition

B) Nucleophilic elimination

C) Nucleophilic addition

D) Electrophilic addition

29 / 100

Category: Chemistry

Strongest acid among the following is:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) HCOOH

B) CH3COOH

C) (CH3)2CHCOOH

D) (CH3)3CCOOH

30 / 100

Category: Chemistry Ch 15 Class 12

Identify the pair of rnicronutrients:

B, I

N, Cu

C, CI

Zn, H

31 / 100

Category: Chemistry Ch 3 Class 11

Acetone and Chloroform are soluble into each other due to:

NUMS 2015
Chemistry
Chemical Bonding
States of Matter
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Hydrogen bonding

B) Dipole – dipole interaction

C) London forces

D) Both (a) and (b)

32 / 100

Category: Chemistry Ch 5 Class 12

) Which halogen is present in Teflon?

Chlorine

Bromine

Fluorine

Iodine

33 / 100

Category: Chemistry Ch 3 Class 12

Which of the following transition metals has the highest variable oxidation state?

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

A) W

B) Pt

C) Hg

D) Mn

34 / 100

Category: Chemistry

Hydrolysis accompanied by bond cleavage is called

Hydrogenation

Hydration

Partial hydration

Hydrogenolysis

35 / 100

Category: Chemistry

Q114.The least acidic alcohol is

A. n-Butanol

B. Propanol

C. Ethanol Ethanol

D. Methanol Methanol

36 / 100

Category: Chemistry

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

A) Its path is circular in a plane perpendicular to the plane of magnetic field

B) The speed and kinetic energy of the particle remains constant

C) The velocity and momentum of the particle changes only in direction

D) The time period of revolution and angular frequency of revolution is independent of the velocity of the particle and radius of the circular path

37 / 100

Category: Chemistry Ch 4 Class 11

Water boils when:

Vapor pressure becomes equal to Atmospheric Pressure

Vapor pressure is less than Atmospheric Pressure

Vapor pressure is greater than Atmospheric Pressure

All of the above

38 / 100

Category: Chemistry Ch 9 Class 11

The reaction in which a molecule is broken down by Water is known as

Hydration

Salvation

Electrolysis

Hydrolysis

39 / 100

Category: Chemistry Ch 13 Class 12

The same carboxylic acid is obtained either by hydrolysis of a nitrite X or by oxidation of alcohol Y. Which pair could be X and Y? X Y

a

b

c

d

40 / 100

Category: Chemistry Ch 6 Class 11

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionization energy of A is high but electron affinity of B is low

B) The ionization energy of A is low but electron affinity of B is high

C) Both ionization energy of A and electron affinity of B are high

D) Both ionization energy of A and electron affinity of B are low

41 / 100

Category: Chemistry Ch 11 Class 11

H2SO4 has great affinity for water because:

NTS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) It decomposes the acid

B) It hydrolyses the acid

C) Acid decomposes the water

D) Acid forms hydrates with water

42 / 100

Category: Chemistry Ch 7 Class 11

Heat evolved or absorbed in a chemical reaction does not depend upon?

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

A) Amount of reactants

B) Pressure of reaction

C) Physical state of reactants and products

D) Temperature

43 / 100

Category: Chemistry Ch 3 Class 11

Real gases behave ideally at:

NTS 2018
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Low temperature and low pressure

B) Moderate temperature and low pressure

C) High temperature and low pressure

D) High temperature and high pressure

44 / 100

Category: Chemistry Ch 9 Class 11

The compound with more than 10% solubility in pure water is:

ETEA 2018
Chemistry
Solution and Colloids
Elimination Tool:

A) M???3

B) A?2(??3)3

C) K2??3

D) ????3

45 / 100

Category: Chemistry Ch 8 Class 12

The general formula of Methane Dichloride is:

CH3Cl2

CH4Cl2

CH2Cl2

None of these

46 / 100

Category: Chemistry Ch 10 Class 12

Which of the following bond has highest bond energy value?

PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) C-I

B) C-H

C) C-Cl

D) C-F

47 / 100

Category: Chemistry Ch 6 Class 11

The substance which conducts electricity by the movement of ions:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Graphite

B) Copper

C) Molten NaCl

D) Mercury

48 / 100

Category: Chemistry Ch 11 Class 12

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

PMC Sample 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) CH₃C(CH₃)₂OH

B) CH₃CH(CH₃)OH

C) CH₃OH

D) C₂H₅OH

49 / 100

Category: Chemistry Ch 5 Class 11

Number of transitions possible for an electron in the 6th shell are

10

15

20

25

50 / 100

Category: Chemistry Ch 2 Class 12

Magnesium reacts with nitrogen to form:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Mg2N2

B) Mg3N2

C) MgN2

D) MgN

51 / 100

Category: Chemistry Ch 8 Class 12

Sp hybridization is found In which of the following?

Ethane

Ethene

Ethyne

None

52 / 100

Category: Chemistry Ch 2 Class 12

Which of the following statements about H2S is false:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

B) It is a gas with a bad smell

C) It is a strong reducing agent

D) It is a molecule which is non linear

E) It is a weak base in water

53 / 100

Category: Chemistry Ch 11 Class 11

The process of bringing an element in use after its complete half-life is:

Rejuvenation

Revoking

Recycling

None of these

54 / 100

Category: Chemistry Ch 6 Class 11

How many orbitals intermix in sp hybridization?

2

3

4

5

55 / 100

Category: Chemistry Ch 6 Class 11

Structure of ammonia is:

Linear

AB4 (bent or angular)

AB3 (Trigonal)

AB4 (Trigonal pyramidal)

56 / 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

57 / 100

Category: Chemistry Ch 2 Class 11

The molecular formula expresses?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) Relative number of atoms and electrons

B) actual number of atoms

C) both relative and actual number of atoms

D) none of the above

58 / 100

Category: Chemistry Ch 4 Class 11

A liquid crystalline state exists between two temperatures i.e melting temperature and ____ temperature.

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) boiling

B) freezing

C) clearing

D) all of these

59 / 100

Category: Chemistry Ch 14 Class 12

Part of a polymer molecule has the following structure. -CH2 -CH2 -CH2 -CH2 -CH2 -CH2-

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

A) C2H4

B) C2H6

C) C3H6

D) C3H8

60 / 100

Category: Chemistry Ch 6 Class 11

Which compound shows maximum hydrogen bonding with water?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) HF

B) H2O

C) NH3

D) CH3OH

61 / 100

Category: Chemistry Ch 8 Class 12

Percentage of butane in Sui gas is?

NTS 2015 SMBBMC
Biology
Hydrocarbons
Elimination Tool:

B) 3.88 %

C) 1.05 %

D) 0.02%

E) 0.17 %

62 / 100

Category: Chemistry Ch 3 Class 12

The oxidation states of Boron are:

+1,+2 and +3

-1, -2 and -3

+1 and -1

+3 and -3

63 / 100

Category: Chemistry Ch 8 Class 11

If Kc < 1, then the reaction proceeds:

Forwards

Backwards

Is at Equilibrium

None of these

64 / 100

Category: Chemistry Ch 6 Class 11

Linear combination of atomic orbitals (LCAO) results in the formation of:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Sigma bond

B) Pi bond

C) Bonding molecular orbitals only

D) Bonding and antibonding molecular orbitals

65 / 100

Category: Chemistry Ch 12 Class 12

Formaldehyde is Industrially Prepared from:

Methanol

Ethyl alcohol

Methyl alcohol

Oxidation of ethylene

66 / 100

Category: Chemistry Ch 3 Class 11

When gases expand, this causes:

Cooling

Heating

Remain constant

None

67 / 100

Category: Chemistry Ch 3 Class 11

The Vander Waal’s constant ‘If of a gas Is four times the:

Actual volume

Volume of vessel

free volume

Volume

68 / 100

Category: Chemistry Ch 1 Class 12

Ionic radius in period from left to right:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) Decreases

B) Increases

C) I st increase and then decrease

D) I st decrease and then increase

69 / 100

Category: Chemistry Ch 11 Class 11

Methyl orange is _______ in acidic solutions.

NTS 2018
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Yellow

B) Pink

C) Orange

D) Red

70 / 100

Category: Chemistry Ch 6 Class 12

Which of the following Is the reason that Iron is the most abundant element?

Oldest metal

Binding energy

Less stability

Ferromagnetic

71 / 100

Category: Chemistry Ch 6 Class 12

Number of unpaired electrons in ferrous ion is:

2

3

5

4

72 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is most soluble in water?

PMC Practice 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ethanoic acid

B) Pentanoic acid

C) Hexanoic acid

D) Butanoic acid

73 / 100

Category: Chemistry Ch 6 Class 11

Which one of these is paramagnetic?

N

Be

He

None of these

74 / 100

Category: Chemistry Ch 10 Class 11

The electrolyte used in fuel cell is:

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

A) KOH

B) NaCl (aq)

C) NaNO3

D) Molten NaCl

75 / 100

Category: Chemistry

Bond energy of C-CI in kJ/moles Is:

More than that of C-F

Less than C-Br

More than that of C-Br but less than C-I

More than that of C-Br and C-I

76 / 100

Category: Chemistry

Q.169 The oxidation number of Nickel in [Ni(CO)A] is

A. 2

B. 8

C.6

D.4

77 / 100

Category: Chemistry Ch 14 Class 12

) Nylon 6 —6 Is obtained by heating adipic acid with:

Hexethylene Diamine

Hexmethylene Diamine

hexmethylene amine

hexdimethylene diamine

78 / 100

Category: Chemistry Ch 10 Class 12

Which of the following Alkyl Halide is most reactive?

RF

RCL

RBr

RI

79 / 100

Category: Chemistry Ch 4 Class 12

Which of the following has allotropic forms:

Oxygen

Sulphur

Both

None of these

80 / 100

Category: Chemistry Ch 9 Class 12

Which type of hybridization takes place in benzene?

Sp3

Sp2

Sp

Sp2 and Sp3

81 / 100

Category: Chemistry

Q.121 Ka (Cu(CN)4) which one is correct

A. Potassium tetra cyano recuperate

B. Coordination numbers 2

C The ligand is positively charged

D.Central atom is present in the avionic sphere

82 / 100

Category: Chemistry Ch 11 Class 11

The rate constant of a first-order reaction is 3 x 10-6 per second.

If the initial concentration is 0.10 M, the initial rate of reaction is:

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) 3 x 10-3 Ms-1

B) 3 x 10-4 Ms-1

C) 3 x 10-6 Ms-1

D) 3 x 10-7 Ms-1

83 / 100

Category: Chemistry Ch 3 Class 12

Ability of carbon to form long chains and rings is known as?

Catenation

Supplementation

Adulteration

Addition

84 / 100

Category: Chemistry Ch 4 Class 11

London forces are present in

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) ammonia

B) water

C) kerosene oil

D) HCl

85 / 100

Category: Chemistry Ch 1 Class 11

One mole of substance at STP has:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 2.24 dm³

B) 24.4 dm³

C) 2.44 dm³

D) 22.4 dm³

86 / 100

Category: Chemistry

Q.140 Which of the following acid solution is used for the seasoning of food?

A. Butyric acid

B. Phthalic acid

C. Lactic acid

D. Acetic acid

87 / 100

Category: Chemistry Ch 8 Class 12

In alkanes all carbon atoms are linked by bond

Triple

Single

Double bonds

Alternative

88 / 100

Category: Chemistry

The presence of several fine lines in a line spectrum shows the presence of:

NUMS Mock 3
Chemistry
Atomic Structure

A) Shells

B) Energy levels

C) Sub shells

D) All of these options are correct

89 / 100

Category: Chemistry Ch 4 Class 11

Which of the following properties does not belong to Gases?

PMC Practice 5
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Indefinite volume

B) Indefinite shape

C) Low density

D) Strong interactions

90 / 100

Category: Chemistry Ch 2 Class 11

The rate of filtration can be considerably increased by using

Fluted filter paper

Suction flask

Stirrer

None of these

91 / 100

Category: Chemistry Ch 8 Class 12

) If 2-butene is treated with KMn04, the product is:

Butanoic acid

Propanoic acid

Butyric acid

Acetic acid

92 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following was used as one of the earliest antiseptic and disinfectants?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Phenol

B) Ether

C) Ethanol

D) Methanol

93 / 100

Category: Chemistry Ch 9 Class 11

The amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

A) Molarity

B) Molality

C) Concentration

D) Solubility

94 / 100

Category: Chemistry Ch 14 Class 12

Which one of the following is the pure carbon compound and used as a reducing agent in industries?

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

A) Coal tar

B) Petroleum

C) Coal gas

D) Coke

95 / 100

Category: Chemistry Ch 13 Class 12

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Cyanohydrins

Amino Acids

Esters

Amides

96 / 100

Category: Chemistry Ch 2 Class 12

Point out the property which is not characteristic of alkali metal:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Low electronegativity

B) Low melting point

C) Their ions are isoelectronic with noble gas

D) High ionization energy

97 / 100

Category: Chemistry Ch 11 Class 12

Primary, Secondary Tertiary alcohols can be distinguished by Lucas test in which .. appear

oily Layer

Brown color

Both a and b

None of these

98 / 100

Category: Chemistry Ch 1 Class 11

If you need to produce carbon dioxide from 12 grams of carbon, how many grams would you need?

32

4

16

8

99 / 100

Category: Chemistry Ch 15 Class 12

Free Nitrogen and Oxygen are present in atmosphere but they do not react with each other under normal conditions because:

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

A) Nitrogen requires a catalyst

B) Oxygen is very inactive

C) Oxygen is found in less concentration

D) Nitrogen is highly inactive gas

100 / 100

Category: Chemistry Ch 3 Class 11

According to Charles Law, when temperature is reduced to half the volume will be

Doubled

Half

Quarter

Same as original

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