Chemistry Practice Tests 2




Entry test contains most of the Chemistry MCQs. FSC Part 2 Chemistry book MCQs. HSSC Chemistry questions MCQs. Solved Chapterwise Chemistry MCQs for first-year 12 class MCQs and 11 class MCQs. Second-year and first-year Chemistry textbooks chapter-wise MCQs with the answer are provided here. The Chemistry portion is helpful in MDCAT , ECAT , NTS NAT , and NUST NET . PakLearningSpot PLS MCQs Bank website for FREE Entry test preparations

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Chemistry Practice Test 2

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1 / 100

Category: Chemistry Ch 9 Class 11

Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
Elimination Tool:

2 / 100

Category: Chemistry

 

Q.88  Most electronegative element among alkali metals

3 / 100

Category: Chemistry Ch 1 Class 11

To find the number of molecules in a given compound which of the following is employed?

4 / 100

Category: Chemistry

The essential property of a fertilizer is that is should be:

NUMS Mock 1
Chemistry
Environmental Chemistry

5 / 100

Category: Chemistry Ch 9 Class 11

12% W/W alcohol In water solution contains water:

6 / 100

Category: Chemistry

Which one of the following is not an isotope of hydrogen:

NUMS Mock 2
Chemistry
Atomic Structure

7 / 100

Category: Chemistry Ch 7 Class 12

The isomers must have the same:

NTS 2013
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

8 / 100

Category: Chemistry

In alkanes, each carbon has hybridization

NUMS Mock 4
Chemistry
Fundamental Principles of Organic Chemistry

9 / 100

Category: Chemistry Ch 15 Class 12

The suspected liver carcinogen which also has negative reproduction and developmental effect on humans is:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

10 / 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:

11 / 100

Category: Chemistry Ch 11 Class 12

By fermentation process of starch and by the catalytic enzyme, ______ is produced.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
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12 / 100

Category: Chemistry Ch 7 Class 12

In SN1 reaction “1” stands for?

NTS 2016 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
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13 / 100

Category: Chemistry Ch 14 Class 12

A polymer called Bakelite is formed by the reaction of phenol with:

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

14 / 100

Category: Chemistry Ch 13 Class 12

Solubility of carboxylic acids in water decrease with

15 / 100

Category: Chemistry Ch 2 Class 12

Densities of alkali metals are low due to:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

16 / 100

Category: Chemistry Ch 11 Class 12

Phenol Acts as

17 / 100

Category: Chemistry Ch 2 Class 12

The carbonates of alkali metals are soluble in water except:

NUMS 2020
Chemistry
s and p Block Elements
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18 / 100

Category: Chemistry Ch 10 Class 12

What substrates are required to add a NO2 group to benzene?

NTS 2013
Chemistry
Alkyl Halides and Amines
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19 / 100

Category: Chemistry

The osmotic pressure of equimolar solutions of BaCl2, NaCl and sucrose will be in the order:

NUMS Mock 1
Chemistry
Solution and Colloids

20 / 100

Category: Chemistry Ch 10 Class 12

When Grignard reagent reacts with 1120, which of the following is formed

21 / 100

Category: Chemistry Ch 6 Class 11

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
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22 / 100

Category: Chemistry Ch 14 Class 12

Formula of fructose is:

23 / 100

Category: Chemistry

Q.98 In SNa reactions, the hybridization of carbon in moving from substart to transition state changes from?

24 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is the formula of Potassium permanganate?

25 / 100

Category: Chemistry Ch 9 Class 12

The structure of cyclohexane is:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

26 / 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:

27 / 100

Category: Chemistry Ch 8 Class 11

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

PMC Sample 2
Chemistry
Chemical Equilibrium
Elimination Tool:

28 / 100

Category: Chemistry Ch 13 Class 12

Which one has fruity smell?

29 / 100

Category: Chemistry

The influence of temperature on reaction rate is predicted by:

NUMS Mock 1
Chemistry
Reaction Kinetics

30 / 100

Category: Chemistry Ch 7 Class 11

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

NUMS 2018
Chemistry
Thermochemistry
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31 / 100

Category: Chemistry Ch 1 Class 11

If the number of molecules of different gases are the same at S.T.P., the occupied volume will be _____.

PMC Practice 24
Chemistry
Introduction to Fundamental Concepts of Chemistry
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32 / 100

Category: Chemistry

Q.143 Which one of the following benzene molecules have?

33 / 100

Category: Chemistry Ch 2 Class 12

When alkali metal react with water the fire Is produced clue to:

34 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is the most environmentally friendly source to derive energy?

NUMS 2017
Chemistry
Environmental Chemistry
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35 / 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

36 / 100

Category: Chemistry Ch 4 Class 11

Molecular substances differ from ionic substances in:

37 / 100

Category: Chemistry Ch 3 Class 11

A sample of gas weighs 1.25 g, at 28 C occupying a volume of 2.50 x 10-2 ml and its pressure is 715 torr. What is the molar mass in grams?

NTS 2016 DUHS & JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
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38 / 100

Category: Chemistry Ch 12 Class 12

Tincture of Iodine is:

NUMS 2015
Chemistry
Aldehydes and Ketones
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39 / 100

Category: Chemistry Ch 5 Class 12

Percentage of Chlorine present In bleaching powder Is:

40 / 100

Category: Chemistry Ch 2 Class 11

Which of the following is the safest way to dry crystals during crystallization?

41 / 100

Category: Chemistry Ch 9 Class 11

The temperature at which one crystalline form changes to other is called ___ temperature

PMC Sample 3
Chemistry
Solution and Colloids
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42 / 100

Category: Chemistry Ch 14 Class 12

Fe’ 2 + is a cofactor of:

43 / 100

Category: Chemistry Ch 9 Class 12

All of the following react with KMnO4 except

NUMS 2017
Chemistry
Hydrocarbons
Elimination Tool:

44 / 100

Category: Chemistry Ch 7 Class 12

An essential condition for the Optical Activity of an organic compound is:

NUMS 2015
Chemistry
Fundamental Principles of Organic Chemistry
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45 / 100

Category: Chemistry Ch 12 Class 12

Which of the following does not give iodoform test?

NUMS 2014
Chemistry
Aldehydes and Ketones
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46 / 100

Category: Chemistry Ch 14 Class 12

Polymers are made up of:

PMC 2021 Tested
Chemistry
Macromolecules
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47 / 100

Category: Chemistry Ch 15 Class 12

In the production of wrought iron Mg, Si, and P are removed in the form of:

PMC Practice 3
Chemistry
Industrial Chemistry
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48 / 100

Category: Chemistry Ch 14 Class 12

The sugar unit in DNA molecule is:

NUMS 2019 Reconduct
Chemistry
Macromolecules
Elimination Tool:

49 / 100

Category: Chemistry Ch 13 Class 12

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

50 / 100

Category: Chemistry

If we balanced the following reaction , what is the net ionic charge on the right side of the equation?

__H+ +___ MnO4- + ____ Fe2+ →___ Mn2+ + ___ Fe3+ + ___ H2O

NUMS Mock 4
Chemistry
Electrochemistry

51 / 100

Category: Chemistry Ch 9 Class 12

What is the color of silver acetylide, AgC=CAg?

PMC Practice 2
Chemistry
Hydrocarbons
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52 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of this is (CH3)2 – CH – CH (C2H5) – C(CH3)3

NTS 2016 DUHS & JSMU
Chemistry
Fundamental Principles of Organic Chemistry
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53 / 100

Category: Chemistry Ch 8 Class 11

Law of mass action was derived by:

NUMS 2014
Chemistry
Chemical Equilibrium
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54 / 100

Category: Chemistry Ch 3 Class 12

Which element among the following forms a protective oxide coating on exposure to air?

55 / 100

Category: Chemistry Ch 13 Class 12

Which one will act as a strong acid?

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
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56 / 100

Category: Chemistry Ch 9 Class 12

Which of the following method is used to prepare Ethylene glycol from ethene?

PMC Practice 1
Chemistry
Hydrocarbons
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57 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has maximum Ionization energy?

58 / 100

Category: Chemistry Ch 14 Class 12

Purification of bauxite whose major impurity Is silica (SiO2) is carried out through:

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

59 / 100

Category: Chemistry Ch 2 Class 11

Atomic number of C is 6 and H is 1. How many electrons are present In 1.6 grams of methane?

NTS 2015 DUHS and JSMU
Chemistry
Stoichiometry
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60 / 100

Category: Chemistry Ch 10 Class 11

The oxidation number of nitrogen in the HNO3 is _______.

NUMS 2018
Chemistry
Electrochemistry
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61 / 100

Category: Chemistry

Q.72 Isopentane is an example of_

62 / 100

Category: Chemistry Ch 1 Class 12

Which of following pair has highest conductivity?

63 / 100

Category: Chemistry

Q.77 H banding is not present in which of the following_____________?

64 / 100

Category: Chemistry Ch 6 Class 11

The boiling point of water is higher than other hydrides because water molecules can form:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

65 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of the compound (CH3)2-CH-CH(C2H5)-C(CH3)3 is :

NTS 2015 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

66 / 100

Category: Chemistry Ch 2 Class 11

is the process of transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

67 / 100

Category: Chemistry Ch 16 Class 12

The best yield of 502 can be obtained by which of the following:

68 / 100

Category: Chemistry

Q.123 Protein present in hides of animals is precipitated by

69 / 100

Category: Chemistry Ch 15 Class 12

Polystyrene is an additional polymer. Which one of the following structures represents
the monomer of polystyrene?

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

70 / 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:

71 / 100

Category: Chemistry Ch 6 Class 11

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Elimination Tool:

72 / 100

Category: Chemistry Ch 12 Class 12

Metaformaldehyde is a result of?

73 / 100

Category: Chemistry Ch 3 Class 12

A six-coordinate complex of formula CrCl3.6H2O has green color. A 0.1 M solution of the complex, when treated with an excess of AgCl, gave 28.7 g of a white precipitate. The formula of the complex would be___________.

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

74 / 100

Category: Chemistry Ch 12 Class 12

Which of the following represent the formula of Ketone?

75 / 100

Category: Chemistry Ch 3 Class 11

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

76 / 100

Category: Chemistry Ch 1 Class 12

Which statement is true about electron affinity?

NUMS 2020
Chemistry
Periodicity in Elements
Chemical Bonding
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77 / 100

Category: Chemistry Ch 2 Class 12

Which one of these reacts rapidly with water at room temperature?

78 / 100

Category: Chemistry

Q.166 Which of the species has a permanent dipole moment?

79 / 100

Category: Chemistry Ch 1 Class 11

Which of the following statement about Avogadro’s hypothesis is correct?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

80 / 100

Category: Chemistry Ch 15 Class 12

The gas which is mainly produced in landfills from the waste is:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

81 / 100

Category: Chemistry Ch 5 Class 12

Fluorine Is reactive due to its:

82 / 100

Category: Chemistry Ch 1 Class 11

Avogadro’s constant is the number of:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

83 / 100

Category: Chemistry Ch 3 Class 12

Prussian blue is:

NUMS 2014
Chemistry
d and f Block Elements
Elimination Tool:

84 / 100

Category: Chemistry Ch 11 Class 11

What is the effect of catalyst in a reaction?

85 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is a major mineral of Lithium?

86 / 100

Category: Chemistry Ch 7 Class 11

Which of following is NOT state variable of thermodynamics?

87 / 100

Category: Chemistry Ch 10 Class 11

Which of the following exhibits an oxidation state of -3?

88 / 100

Category: Chemistry Ch 12 Class 12

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

89 / 100

Category: Chemistry Ch 2 Class 11

2 grams of H2 molecules contain ______ molecules.

NTS 2012
Chemistry
Stoichiometry
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90 / 100

Category: Chemistry Ch 8 Class 12

In which of the following C-C bond length is the minimum?

91 / 100

Category: Chemistry Ch 8 Class 12

The major source of unburnt hydrocarbons in the atmosphere is / are:

NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:

92 / 100

Category: Chemistry Ch 10 Class 12

Grignard reagent when added to dry ice gives:

93 / 100

Category: Chemistry Ch 8 Class 12

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

94 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is not a disaccharide?

95 / 100

Category: Chemistry Ch 7 Class 11

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

96 / 100

Category: Chemistry

Q.162 Ifthe concentration of reactants in a chemical reaction is Unity the rate is called

97 / 100

Category: Chemistry Ch 2 Class 12

Sodium reacts with water more vigorously than lithium because it:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

98 / 100

Category: Chemistry Ch 2 Class 12

What is the chemical formula for plaster of Paris?

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

99 / 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:

100 / 100

Category: Chemistry

Q.132 Cyclic compounds consist of except?

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