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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Category: Chemistry

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

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Category: Chemistry Ch 10 Class 11

The oxidation number of all the elements in the free state is:

NTS 2012
Chemistry
Electrochemistry
Elimination Tool:

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Category: Chemistry Ch 11 Class 11

Methyl orange is _______ in acidic solutions.

NTS 2018
Chemistry
Acids, Bases and Salts
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4 / 100

Category: Chemistry Ch 16 Class 12

Which one is correct about Incineration of Industrial waste?

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Category: Chemistry Ch 8 Class 12

In which of the following cases are the benzene rings isolated?

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

6 / 100

Category: Chemistry Ch 11 Class 12

Phenol is a(n) ________ liquid?

PMC Sample 1
Chemistry
Alcohols, Phenols and Ethers
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7 / 100

Category: Chemistry Ch 5 Class 12

Which of the following show halogens?

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Category: Chemistry Ch 15 Class 12

The increasing number of CFC production for industrial use has been a major contributor to the depletion of ozone molecules in the stratosphere. When CFCs diffuses slowly to the atmosphere in the presence of UV light between 175 nm to 220 nm, the ozone layer decomposes. If 1 mole of CFCl3 (Freon – 110) has been released into the air, how many moles of oxygen is produced from the photodecomposition of ozone?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

9 / 100

Category: Chemistry Ch 3 Class 11

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
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10 / 100

Category: Chemistry Ch 8 Class 11

The Haber Process is used to produce ammonia commercially according to the following equilibrium: N2(g) + 3H2g = 2NH3g + energy Which of the following conditions will produce the highest yield of ammonia?

11 / 100

Category: Chemistry Ch 3 Class 11

The value of S.T.P for 1 mole of any ideal gas is:

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

12 / 100

Category: Chemistry Ch 3 Class 11

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

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Category: Chemistry Ch 6 Class 11

Paramagnetism is due to:

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Category: Chemistry Ch 3 Class 12

Which one of the following is an acid?

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Category: Chemistry

Which one of the following organic compounds have the least carbon-carbon bond length?

NUMS Mock 4
Chemistry
Hydrocarbons

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Category: Chemistry

Q.101 Strong acid can be involved in a spontaneous reaction which is termed as

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Category: Chemistry

Q.129 The biochemical process used in the synthesis of alcohol in the presence of yeast is called as____________________?.

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Category: Chemistry Ch 4 Class 12

Hardness of transition metals is due to ______?

PMC Practice 6
Chemistry
d and f Block Elements
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19 / 100

Category: Chemistry

Which of the following has the least electron affinity value?

NUMS Mock 1
Chemistry
Periodicity in Elements

20 / 100

Category: Chemistry Ch 4 Class 12

D block elements are also called as ____ ?

PMC Practice 1
Chemistry
d and f Block Elements
Elimination Tool:

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Category: Chemistry Ch 14 Class 12

A catalyst catalyzes reaction by:

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Category: Chemistry Ch 4 Class 11

Loose electrons present in outer shell meansv

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Category: Chemistry Ch 1 Class 11

The efficiency of a chemical reactions can be checked by calculating ________ yield.

PMC Practice 30
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

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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
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Category: Chemistry Ch 4 Class 11

At 1489 mm of Hg, water will boil at:

NUMS 2019 Reconduct
Chemistry
States of Matter – Gases, Liquids and Solids
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26 / 100

Category: Chemistry Ch 3 Class 12

Aluminium is a

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Category: Chemistry Ch 7 Class 12

Which one is NOT a nucleophile?

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

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Category: Chemistry Ch 11 Class 12

) Melting point of methyl alcohol is:

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Category: Chemistry Ch 2 Class 11

Change in Pressure will only affect the substances which are in:

PMC Practice 4
Chemistry
Experimental Techniques in Chemistry
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Category: Chemistry Ch 13 Class 12

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
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Category: Chemistry Ch 11 Class 12

Which of the following is more soluble in water?

PMC Sample 1
Chemistry
Alcohols, Phenols and Ethers
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Category: Chemistry Ch 9 Class 12

Methane gas is also known as

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

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Category: Chemistry

Q.149 There are just only a few stable compounds, formed by noble gases like

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Category: Chemistry Ch 12 Class 12

Paraldehyde is formed by:

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Category: Chemistry Ch 3 Class 12

Which of the following transition metals in its ground state have unpaired electrons in an s-orbital?

NUMS 2015
Chemistry
d and f Block Elements
Elimination Tool:

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Category: Chemistry Ch 6 Class 11

The number of sigma and pi bonds in 1-butene-3-yne?

NUMS 2015
Chemistry
Chemical Bonding
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Category: Chemistry Ch 8 Class 12

In Alkenes the Carbon atoms are connected to each other by a

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Category: Chemistry Ch 3 Class 12

Which of the following does not act as ligand in the formation of complexes?

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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Category: Chemistry Ch 8 Class 11

For which one of the following gaseous equilibrium will an increase in pressure increase the yield of the product:

NTS 2014
Chemistry
Chemical Equilibrium
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Category: Chemistry Ch 11 Class 12

The aromatic compound having the functional group “OH” attached to It Is?

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Category: Chemistry Ch 15 Class 12

Which one of the following is NOT an advantage of synthetic fiber?

NTS 2016 SMBBMC
Chemistry
Environmental Chemistry
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Category: Chemistry Ch 7 Class 11

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

NUMS 2018
Chemistry
Thermochemistry
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Category: Chemistry Ch 10 Class 12

NH3 (amine) is an example of:

NTS 2015 DUHS and JSMU
Chemistry
Alkyl Halides and Amines
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Category: Chemistry Ch 7 Class 12

Carbonyl group is present in

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Category: Chemistry Ch 4 Class 11

The properties of liquid crystals are intermediate between crystals and:

PMC Practice 3
Chemistry
States of Matter – Gases, Liquids and Solids
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Category: Chemistry Ch 9 Class 11

Buffer solutions resist change in their?

PMC Practice 6
Chemistry
Solution and Colloids
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Category: Chemistry

Q.160 Polymerization of ethene produces which of the followving polymer?

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Category: Chemistry Ch 13 Class 12

On reacting with which of the following carboxylic acids produce CO₂?

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

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Category: Chemistry Ch 1 Class 11

In combustion analysis method CO2 is absorbed by?

50 / 100

Category: Chemistry Ch 10 Class 12

Which of the following has the strongest bond?

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

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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
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Category: Chemistry Ch 12 Class 12

Treatment of propionaldehyde with Dil. the NaOH solution gives:

NUMS 2016
Chemistry
Aldehydes and Ketones
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Category: Chemistry Ch 1 Class 12

Outer transition elements belong to

NTS 2013
Chemistry
Periodicity in Elements
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Category: Chemistry

Q.151 An electron in an atom is completely described by its

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Category: Chemistry Ch 7 Class 12

The type of isomerism existing in a compound of molecular formula C2H6O is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
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56 / 100

Category: Chemistry Ch 6 Class 12

Which of the following has the lowest boiling point?

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Category: Chemistry Ch 8 Class 11

Which of the following has the highest value of pKa?

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

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Category: Chemistry Ch 1 Class 12

Who started the development of the First Periodic Table?

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Category: Chemistry Ch 4 Class 11

A fixed mass of an ideal gas is contained in a cylinder at constant temperature. Now, the pressure of the gas is decreased.

What happened to the molecules of gas?

PMC Practice 1
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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Category: Chemistry Ch 2 Class 12

What is the chemical formula for plaster of Paris?

NTS 2010
Chemistry
s and p Block Elements
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Category: Chemistry Ch 6 Class 11

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

NTS 2010
Chemistry
Chemical Bonding
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Category: Chemistry Ch 3 Class 12

The transition element which does not show variable valency is:

PMC 2020
Chemistry
d and f Block Elements
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63 / 100

Category: Chemistry Ch 10 Class 12

Reaction by Grignard reagent are mostly

64 / 100

Category: Chemistry

Which enthalpy change is relevant in the following process

Na(s) -> Na (g) ΔH = +107

NUMS Mock 2
Chemistry
Thermochemistry

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Category: Chemistry Ch 3 Class 11

Half atmospheric pressure is:

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

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Category: Chemistry Ch 10 Class 12

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

NUMS 2016
Chemistry
Alkyl Halides and Amines
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Category: Chemistry Ch 13 Class 12

Hydrolysis of Nitriles produces:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
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68 / 100

Category: Chemistry

liquid whose thermodynamic property do not de ti)upon intermolecular forces Is

69 / 100

Category: Chemistry Ch 15 Class 12

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

70 / 100

Category: Chemistry Ch 3 Class 12

Orthoboric acid can NOT be obtained by which of the following?

71 / 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:

72 / 100

Category: Chemistry Ch 11 Class 11

Which of the following oxides is amphoteric in character?

NUMS 2014
Chemistry
Acids, Bases and Salts
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73 / 100

Category: Chemistry Ch 8 Class 11

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

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Category: Chemistry Ch 1 Class 12

Number of elements in 6th period is:

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Category: Chemistry Ch 13 Class 12

Amino acid is usually known by a

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Category: Chemistry Ch 7 Class 11

The heat of a reaction can be calculated by using:

NTS 2010
Chemistry
Thermochemistry
Elimination Tool:

77 / 100

Category: Chemistry Ch 14 Class 12

All are dehydrating agents for alcohols to produce alkene except:

NTS 2016 DUHS & JSMU
Chemistry
Macromolecules
Elimination Tool:

78 / 100

Category: Chemistry Ch 11 Class 12

Alkoxicies react with alkyl halide to form? a

79 / 100

Category: Chemistry

Q86 : Which of the following is most ionic in nature

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Category: Chemistry Ch 9 Class 12

Who rejected vital force theory

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

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Category: Chemistry Ch 11 Class 12

The reactivity of alcohol when 0-H bonds break

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Category: Chemistry Ch 1 Class 12

Magnesium oxide is used in the making of the lining of blast furnaces. It is extracted from seawater as follows. Aqueous calcium hydroxide is added to seawater.

Ca(OH)2 (aq) + MgCl2 (aq) + Mg(OH)2 (s) + CaCl2 (aq)

The magnesium hydroxide is then filtered off and roasted.

Which of the following comparisons between calcium and magnesium explains why magnesium hydroxide forms?

NTS 2013
Chemistry
Periodicity in Elements
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Category: Chemistry Ch 8 Class 11

In a exothermic process, forward direction reaction is favored by:

84 / 100

Category: Chemistry Ch 10 Class 11

Only those substances are written in Ion Electron Method:

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

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Category: Chemistry Ch 5 Class 12

Which of the following is a result of reaction between Iodine and Oxygen?

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Category: Chemistry Ch 2 Class 12

What is the chemical formula of Epsom Salt?

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Category: Chemistry Ch 3 Class 11

1 atmospheric pressure is equal to

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Category: Chemistry

Q.167 The number of charges present on a cation depends on number of electrons______________ by the atom

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Category: Chemistry Ch 4 Class 12

Ligands having two lone pair of electrons for donation to the central transition metal ion are known as:

UHS 2018
Chemistry
d and f Block Elements
Elimination Tool:

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Category: Chemistry Ch 13 Class 12

In esterification, alcohol reacts with:

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Category: Chemistry Ch 2 Class 12

Identify the correct statement:

NUMS 2014
Chemistry
s and p Block Elements
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Category: Chemistry Ch 1 Class 11

A compound has an empirical (simple) formula, C2H2O. If the experimental molecular weight is found to be in the range 160-170, the molecular formula of this compound is:

(Atomic weight: C = 12.1, H = 1.008, O = 16).

PMC Practice 21
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

93 / 100

Category: Chemistry Ch 10 Class 11

Highest oxidation state of chlorine Is

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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:

95 / 100

Category: Chemistry Ch 13 Class 12

What is the least number of carbon atoms in amino acids?

96 / 100

Category: Chemistry Ch 14 Class 12

Which one is not true for H2SO4?

NTS 2012
Chemistry
Macromolecules
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Category: Chemistry Ch 13 Class 12

Which of the following reagent is required for preparation of acyl chloride (CH3COCl) from ethanoic aicd?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
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98 / 100

Category: Chemistry

Hydrolysis accompanied by bond cleavage is called

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Category: Chemistry Ch 7 Class 12

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

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

100 / 100

Category: Chemistry Ch 1 Class 11

Which of the following represents Empirical Formula of Glucose?

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