Chemistry Practice Tests 3




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 3

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1 / 100

Category: Chemistry Ch 12 Class 12

Simplest aromatic aldehyde has number of hydrogen atoms.

2 / 100

Category: Chemistry Ch 8 Class 11

A solution has pH of 10. What is the value of [OH-]?

3 / 100

Category: Chemistry

Q.112 If uncertainty in momentum of electron is zero, the uncertainty in its position would be?

4 / 100

Category: Chemistry

Q.101   The maximum charge to mass ratio for those canal rays when ______ gas is used in discharge tube

5 / 100

Category: Chemistry Ch 14 Class 12

Proteins also contain _____ bonding.

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

6 / 100

Category: Chemistry

Le Chatelier Principle is about:

NUMS Mock 1
Chemistry
Chemical Equilibrium

7 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is the formula of Potassium permanganate?

8 / 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?

9 / 100

Category: Chemistry Ch 1 Class 12

Periodic table is divided into groups A and 6:

10 / 100

Category: Chemistry Ch 7 Class 11

If pressure and volume of a gas are variable while temperature remains constant, this belongs to

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

11 / 100

Category: Chemistry Ch 11 Class 11

If the reaction, P + Q → R + S, is described as being of zero-order with respect to P, it means that:

NTS 2012
Chemistry
Reaction Kinetics
Elimination Tool:

12 / 100

Category: Chemistry Ch 14 Class 12

Formula of fructose is:

13 / 100

Category: Chemistry

Q.116 Phenol does not evolve CO2 from NaHCO3 like carboxylic acids because phenol is

14 / 100

Category: Chemistry Ch 1 Class 12

At the end of the periodic table _____ are found.

NTS 2016 DUHS & JSMU
Chemistry
Periodicity in Elements
Elimination Tool:

15 / 100

Category: Chemistry Ch 8 Class 11

The value K for H2(g) + CO2(g) H2O(g) + CO(g) is 1.80 at 1000 C. If 1.0 mole of each H2 and CO2 are placed in 1 litre flask, the final equilibrium concentration of CO at 1000 C will be:

NTS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

16 / 100

Category: Chemistry Ch 9 Class 12

Benzene when reacted with chlorine in ultraviolet rays produces:

17 / 100

Category: Chemistry Ch 3 Class 12

Which one of the following is an acid?

18 / 100

Category: Chemistry

Q.4 Melting and boiling point of transition elements are higher due to

19 / 100

Category: Chemistry Ch 10 Class 12

Which one the following can act as nucleophile?

20 / 100

Category: Chemistry Ch 8 Class 11

Law of mass action was derived by:

NUMS 2014
Chemistry
Chemical Equilibrium
Elimination Tool:

21 / 100

Category: Chemistry Ch 10 Class 11

The oxidation state of “S’ in the (S2O3)-2 is:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

22 / 100

Category: Chemistry Ch 7 Class 11

Cl + e —-> Cl-

ΔH = -348kJ/mol

The value -348KJ/mol in this case will be:

NTS 2012
Chemistry
Thermochemistry
Elimination Tool:

23 / 100

Category: Chemistry Ch 6 Class 12

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

24 / 100

Category: Chemistry Ch 5 Class 11

How many electrons can have the values n=2, l=1, and s=+½ in the configuration 1s2, 2s2, 2p3?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
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25 / 100

Category: Chemistry Ch 6 Class 11

Both ionic and covalent bonds are present in:

NUMS 2015
Chemistry
Chemical Bonding
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26 / 100

Category: Chemistry Ch 11 Class 11

The change in concentration of reactants or products per unit time is

PMC Sample 3
Chemistry
Reaction Kinetics
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27 / 100

Category: Chemistry Ch 3 Class 12

Solubility of Borax decahydrate at 100C is

28 / 100

Category: Chemistry

A system at equilibrium can be disturbed by:

NUMS Mock 4
Chemistry
Chemical Equilibrium

29 / 100

Category: Chemistry Ch 11 Class 12

Treatment of ethene with cold sulphuric acid, followed by reaction with boiling water, yields:

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

30 / 100

Category: Chemistry Ch 14 Class 12

Chlorine is manufactured commercially by the electrolysis of aqueous sodium chloride (brine). Which other products are made in this process?

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

31 / 100

Category: Chemistry

Iso-Butyl alcohol has following carbon attached to hydroxyl group:

NUMS Mock 3
Chemistry
Alcohol, Phenols, and Ethers

32 / 100

Category: Chemistry Ch 2 Class 11

The process of changing a solid directly into gas upon heating is known as:

33 / 100

Category: Chemistry Ch 8 Class 12

When CH2 = CH2 reacts with a halogen acid, the product formed is:

34 / 100

Category: Chemistry

Q.139 Redox Reaction are actually transfer of

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Category: Chemistry

To avoid the formation of toxic compounds with chlorine, which substance is used for disinfecting water?

NUMS Mock 1
Chemistry
s and p Block Elements

36 / 100

Category: Chemistry Ch 9 Class 12

Which of the following statements is incorrect about benzene?

37 / 100

Category: Chemistry Ch 9 Class 12

Benzene is prepared in laboratory by distillation of phenol with

38 / 100

Category: Chemistry Ch 4 Class 11

Which of the following statements is incorrect about amorphous solids?

PMC Practice 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

39 / 100

Category: Chemistry Ch 1 Class 12

Which orbitals take part in binding of transition elements

PMC Sample 1
Chemistry
Periodicity in Elements
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40 / 100

Category: Chemistry Ch 7 Class 11

Some substances lack definite heats of fusion. These substances are:

NUMS 2020
Chemistry
Thermochemistry
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41 / 100

Category: Chemistry Ch 8 Class 12

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

NUMS 2016
Chemistry
Hydrocarbons
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42 / 100

Category: Chemistry Ch 1 Class 11

_______ is a macromolecule found in blood.

PMC Practice 23
Chemistry
Introduction to Fundamental Concepts of Chemistry
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43 / 100

Category: Chemistry Ch 1 Class 11

Glucose(C6H12O6) is the most important nutrient in a cell for generating chemical potential energy, what is the mass percent of carbon in 1.5g of sample?

PMC Practice 24
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

44 / 100

Category: Chemistry Ch 10 Class 11

The E.M.F of a Cell is equals to

PMC Sample 1
Chemistry
Electrochemistry
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45 / 100

Category: Chemistry Ch 13 Class 12

The carbonic acid which Is named after butter is:

46 / 100

Category: Chemistry

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

NUMS Mock 4
Chemistry
Aldehydes and Ketones

47 / 100

Category: Chemistry Ch 8 Class 11

If the ratio of initial concentration of the reagents is greater than the Kc then:

NTS 2011
Chemistry
Chemical Equilibrium
Elimination Tool:

48 / 100

Category: Chemistry

Q.180 Enzymes speed up the reaction upto

49 / 100

Category: Chemistry Ch 1 Class 11

The atomic mass, molecular mass, ionic mass or formula mass of a substance expressed in grams is called:

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

50 / 100

Category: Chemistry Ch 14 Class 12

Common name of Octadecanoic acid is:

NTS 2016 DUHS & JSMU
Chemistry
Acids, Bases and Salts
Macromolecules
Elimination Tool:

51 / 100

Category: Chemistry

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

52 / 100

Category: Chemistry Ch 1 Class 12

Ionic radius in period from left to right:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

53 / 100

Category: Chemistry Ch 14 Class 12

Which one is not true for H2SO4?

NTS 2012
Chemistry
Macromolecules
Elimination Tool:

54 / 100

Category: Chemistry Ch 1 Class 11

Actual yield is always less than theoretical yield due to

PMC Practice 27
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

55 / 100

Category: Chemistry

Q.30 How meta directing groups affect the Electrophilic substitution of benzene ring?

56 / 100

Category: Chemistry Ch 5 Class 11

Which of the following orbital will be filled first than 4p?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

57 / 100

Category: Chemistry Ch 13 Class 12

Vinegar is basically acid:

58 / 100

Category: Chemistry

Q.6 The Relative atomíc mass of copper is

59 / 100

Category: Chemistry Ch 6 Class 12

Which of following transition complex will have most stable square planar structure?

60 / 100

Category: Chemistry Ch 7 Class 11

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps. This is known as:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

61 / 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
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62 / 100

Category: Chemistry Ch 12 Class 12

Methyl ketones can be characterized by performing:

NUMS 2018
Chemistry
Aldehydes and Ketones
Elimination Tool:

63 / 100

Category: Chemistry Ch 4 Class 12

In which of the following the oxidation state of S is the highest

64 / 100

Category: Chemistry Ch 2 Class 12

Rocky crust of earth is mainly composed of?

65 / 100

Category: Chemistry Ch 11 Class 12

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

PreMedPK MDCAT Mock 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

66 / 100

Category: Chemistry

Q.165 Carboxylic acids are formed by the hydrolysis of_

67 / 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
Elimination Tool:

68 / 100

Category: Chemistry

Q.164 Reaction of vinyl acetylene with HCI produces?

69 / 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:

70 / 100

Category: Chemistry Ch 1 Class 11

The number of neutrons in H2SO4 are ____.

PMC Practice 26
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

71 / 100

Category: Chemistry Ch 5 Class 11

The difference between soft and hard X-rays is of:

NUMS 2016
Physics
Atomic Structure
Elimination Tool:

72 / 100

Category: Chemistry

 

Q.115 The crude petroleum is separated in fraction by

73 / 100

Category: Chemistry Ch 3 Class 11

If the matter in a given system at a given condition is divided into two equal parts, then the value of the extensive properties will become:

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

74 / 100

Category: Chemistry

Q.2 an element or its compound is first _________to get its _______spectrum by spectrometer

75 / 100

Category: Chemistry

Q.7 Which of the following forces have no relation with valence electrons?

76 / 100

Category: Chemistry Ch 14 Class 12

Who introduced the concept of macromolecules?

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

77 / 100

Category: Chemistry Ch 2 Class 12

Caster kellners cell evaporated has replaced __________ because the Caster Kellner process evaporates__________?

NTS 2015 SMBBMC
Chemistry
s and p Block Elements
Elimination Tool:

78 / 100

Category: Chemistry

Q.34 Which of these have a positive value of enthalpy?

79 / 100

Category: Chemistry

What type of chemical reaction is this?
CH3CHO + NH3 -> CH3CH(OH)NH2

NUMS Mock 3
Chemistry
Aldehydes and Ketones

80 / 100

Category: Chemistry Ch 6 Class 11

Paramagnetism is due to:

81 / 100

Category: Chemistry Ch 9 Class 12

Hydrocarbons which burn with a smoky flame are called:

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

82 / 100

Category: Chemistry Ch 5 Class 11

“In an atom no two electrons can have the some set of four Quantum numbers” is stated by:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

83 / 100

Category: Chemistry Ch 9 Class 12

The C-H bond distance is the longest in:

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

84 / 100

Category: Chemistry Ch 7 Class 11

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

NTS 2016 SMBBMC
Chemistry
Thermochemistry
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85 / 100

Category: Chemistry Ch 2 Class 12

Li is an element of group?

86 / 100

Category: Chemistry

Q.105 Free radical substitution reactions are preferably followed by

87 / 100

Category: Chemistry Ch 8 Class 12

Which one of the following has the least C — C bond length?

88 / 100

Category: Chemistry Ch 1 Class 12

6th period of periodic table contains elements:

89 / 100

Category: Chemistry Ch 12 Class 12

Which of the following reagent is used to separate and purify carbonyl and non carbonyl compounds?

PreMedPK MDCAT Mock 3
Chemistry
Aldehydes and Ketones
Elimination Tool:

90 / 100

Category: Chemistry Ch 5 Class 11

Nitrogen and phosphorus have 3 of their valence electrons unpaired because of:

NTS 2014
Chemistry
Atomic Structure
Elimination Tool:

91 / 100

Category: Chemistry Ch 2 Class 12

Which is the paramagnetic oxide of chlorine?

NUMS 2019 Reconduct
Chemistry
s and p Block Elements
Elimination Tool:

92 / 100

Category: Chemistry Ch 12 Class 12

Which one of the following is used in making lozenges?

93 / 100

Category: Chemistry Ch 1 Class 11

X-ray work in 20th century shows that diameter of the atoms are of the order?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

94 / 100

Category: Chemistry Ch 4 Class 11

Number of molecules in 1 dm3 of water will be almost

PMC Sample 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

95 / 100

Category: Chemistry

Q.40 Octane number of n-heptane is____________?

96 / 100

Category: Chemistry Ch 5 Class 11

Which of the following has lowest e/m ratio?

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

97 / 100

Category: Chemistry Ch 2 Class 11

Silver oxide decomposes when heated to silver and oxygen. If 0.5 moles of lunar caustic is heated up to 450 degrees, giving out Nitrogen dioxide and oxygen leaving silver as metal, what is the mass of the residue?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

98 / 100

Category: Chemistry Ch 15 Class 12

The substance for the separation of isotopes is firstly converted into the

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

99 / 100

Category: Chemistry Ch 11 Class 12

The strongest acid among the following is?

PreMedPK MDCAT Mock 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

100 / 100

Category: Chemistry

Which of the following will not undergo aldol condensation?

NUMS Mock 2
Chemistry
Aldehydes and Ketones

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