Chemistry Practice Tests 4

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Chemistry Practice Test 4

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1 / 100

Category: Chemistry

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

A) Ethanol

B) Butane

C) Methanol

D) Phenol

2 / 100

Category: Chemistry Ch 9 Class 12

How many Dewar Structure of Benzene are present?

2

3

4

Infinite

3 / 100

Category: Chemistry

Q.172 Dipole forces has direct relation with the

A. Chemical properties of a substance

B. Kinetic properties of substance

C. Thermodynamic properties of substance

D. Nature of substance

4 / 100

Category: Chemistry Ch 10 Class 12

In general formula of alkyl halide RX, X represents ________

PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Noble gases

B) Halogens

C) Metals

D) Metalloids

5 / 100

Category: Chemistry

Which of the following are the fundamental ways of transferring energy?

NUMS Mock 3
Chemistry
Thermochemistry

A) Pressure and work

B) Volume and pressure

C) Heat and work

D) Pressure and heat

6 / 100

Category: Chemistry Ch 6 Class 11

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) N2H5+

B) BaCl2

C) HCl

D) H2O

7 / 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 1
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Irreversible

B) Unidirectional

C) Multidirectional

D) Reversible

8 / 100

Category: Chemistry Ch 12 Class 12

Odour of formaldehyde Is:

Pungent

Aromatic

c) Pleasant

Obnoxious

9 / 100

Category: Chemistry Ch 10 Class 11

which one of the following Is the oxidation number of Iodine in I2?

0

1

2

None

10 / 100

Category: Chemistry

Aromatic compounds burn with a sooty flame because:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

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

11 / 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:

A) 108 grams

B) 54 grams

C) 216 grams

D) 27 grams

12 / 100

Category: Chemistry Ch 2 Class 12

Li is an element of group?

II-A

Ill-A

I-A

IV-B

13 / 100

Category: Chemistry Ch 5 Class 11

Maximum ____ electrons can be placed in one orbital:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

14 / 100

Category: Chemistry Ch 9 Class 12

The bond angles in benzene ring are:

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

A) 90˚

B) 60˚

C) 120˚

D) 180˚

15 / 100

Category: Chemistry Ch 2 Class 11

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

Pressing between folds of paper

Boiling

Cooling

Vacuum desiccator

16 / 100

Category: Chemistry

Q.79 Salt Bridge is used for the purpose of

A. Producing Electrons

B. Circuit Completion

C. Increasing speed electrons

D. All of these

17 / 100

Category: Chemistry Ch 11 Class 12

Which of following is an example of electrophilic attack on alcohols?

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

A) C2H5OH + CH3COOH → CH3COOC2H5 + H2O

B) 2C2H5OH+2Na→ 2CH5ONa+H2

C) C2H5OH + HCl → C2H5Cl + H2O

D) Both A and B

18 / 100

Category: Chemistry Ch 10 Class 11

In the reaction 2Fe+Cl2 2FeCl3

NTS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) Fe is reduced

B) Fe is oxidized

C) Cl2 oxidized

D) None of the above

19 / 100

Category: Chemistry Ch 14 Class 12

Proteins are present in

Hair

Nails

Skin

All of these

20 / 100

Category: Chemistry Ch 3 Class 12

) Which one of the following is metalloid?

C

Si

S

0

21 / 100

Category: Chemistry Ch 9 Class 12

What are the products of destructive distillation of coal?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Coal tar

B) Coke

C) Coal gas

D) All of above

22 / 100

Category: Chemistry Ch 8 Class 12

When CH3 is attached to the benzene ring, it makes the ring a:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) Good electrophile

B) Good nucleophile

C) Resonance hybrid

D) Extraordinary stable

23 / 100

Category: Chemistry

Q.14 Kinetic Energy is the sum of

A. Rotational & Vibrational

B. Translation & Rotational

C. Rotational, Vibrational and Translation

D. All of these

24 / 100

Category: Chemistry Ch 10 Class 11

Conversion of Electrical energy into chemical energy is

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

A) Mechanical Energy

B) Electromechanical Energy

C) Electrochemistry

D) Chemical Energy

25 / 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

26 / 100

Category: Chemistry Ch 13 Class 12

The carbonic acid which Is named after butter is:

Capric acid

Enanthic acid

Butyric Acid

Formic acid

27 / 100

Category: Chemistry Ch 6 Class 11

How many orbitals intermix in sp hybridization?

2

3

4

5

28 / 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

29 / 100

Category: Chemistry Ch 13 Class 12

What is common when carboxylic acid is reacted with base or with alcohol?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Catalyst

B) Formation of ester

C) Formation of salt

D) Formation of water

30 / 100

Category: Chemistry Ch 1 Class 12

Whidi group has coinage metals?

IB

IIB

IIIA

IA

31 / 100

Category: Chemistry Ch 9 Class 12

Stability of benzene is due to

Alternate double bonds

Electrons' cloud

Double bonds

Delocalization of electrons

32 / 100

Category: Chemistry

Q.85 Along period of periodic table, shielding effect

A. Increases

B. Decreases

C. Remains constant

D. First increases then decrease

33 / 100

Category: Chemistry Ch 11 Class 11

Type of reactants or product decides the nature of method adapted for finding

PMC Sample 1
Chemistry
Reaction Kinetics
Elimination Tool:

A) Rate constant

B) Enthalpy

C) Temperature

D) Rate of a Reaction

34 / 100

Category: Chemistry Ch 3 Class 12

The octahedral geometry of the complex [Co(NH3)6]2+ has hybridization:

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

A) Sp3d

B) Spd6

C) Sp3d2

D) Sp2d3

35 / 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

36 / 100

Category: Chemistry Ch 8 Class 11

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

10^4

10^-4

10^6

10^-6

37 / 100

Category: Chemistry Ch 11 Class 12

The classification of monohydric alcohols is due to

PMC Sample 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) hydrogen atom

B) carbon atom

C) hydroxyl group

D) carbonyle group

38 / 100

Category: Chemistry Ch 9 Class 12

The reaction of benzene with bromine gives?

Allkyl bromide

Hydrogen bromide

Bromo-phenol

Bromo cyclohexane

39 / 100

Category: Chemistry

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

NUMS Mock 4
Chemistry
Hydrocarbons

A) CH4

B) C2H2

C) C2H4

D) All of the above

40 / 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 %

41 / 100

Category: Chemistry

Q.87 O2-2 + 2H2O → 2H2O2, In this reaction O2-2 act as

A. Oxidizing agent

B. Reducing agent

C. Dehydrating agent

D. Drying agent

42 / 100

Category: Chemistry Ch 16 Class 12

Which of the following is a water cleaning halogen?

CI

Br

F

I

43 / 100

Category: Chemistry Ch 2 Class 12

Chlorine upon reaction in cold NaOH yields:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) NaCl, NaClO, H2O

B) NaCl , NaClO3 , H2O

C) NaClO , NaClO3, H2O

D) NaCl , H2O

44 / 100

Category: Chemistry Ch 1 Class 11

If we are given the mass of a substance ,we can calculate the_______ of the other substance with the help of a balanced chemical equation.

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Mass

B) Volume

C) Moles

D) All of these

45 / 100

Category: Chemistry

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

A.DNA

B. proteins

C. Carbohydrates

D. Lipids

46 / 100

Category: Chemistry Ch 11 Class 11

As the concentration of reactant increases, the rate of reaction also increases, it is because:

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) K.E. increases in molecules

B) Oscillation increases between molecules

C) Collisions frequency increases

D) Temperature of molecules increases

47 / 100

Category: Chemistry Ch 8 Class 12

When CH3 is attached to the benzene ring, it makes the ring a:

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Good electrophile

B) Good nucleophile

C) Resonance hybrid

D) Extraordinary stable

48 / 100

Category: Chemistry

Q.27 The temperature at which one crystalline form changes to other is called _____________temperature

A. critical

B. absolute

C. transition

D. none of these

49 / 100

Category: Chemistry Ch 13 Class 12

Solubility of carboxylic acids in water decrease with

Decrease in molecular mass

Increase in molecular mass

Both a and b

None of these

50 / 100

Category: Chemistry Ch 11 Class 11

The unit of rate of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

A) Mole (dm3) sec

B) Mole (dm3) sec-1

C) Mole(dm-3) sec -1

D) Mole(dm3)sec-2

51 / 100

Category: Chemistry

The value of surface tension of isopropyl alcohol is?

NUMS Mock 2
Chemistry
Chemical Bonding

A) Less than water

B) Less than ethylene glycol

C) less than methyl alcohol

D) same as ethyl alcohol

52 / 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

53 / 100

Category: Chemistry

Q86 : Which of the following is most ionic in nature

A. Sodium chloride

B. Sodium fluoride

C. Sodium bromide

D. Sodium iodide

54 / 100

Category: Chemistry

NaNO3 on heating gives:

NUMS Mock 3
Chemistry
Periodicity in Elements

A) O2

B) NO2

C) O2 + NO2

D) NaNO2 + O2

55 / 100

Category: Chemistry Ch 15 Class 12

Which of these pollutants is produced by burning of coal and causes acid rain.

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) NO

B) CO2

C) SO2

D) CO

56 / 100

Category: Chemistry

Q.96 Heat supplied at constant pressure equals to

A. Activation Energy

B. Internal energy change

C. Entropy

D. EnthalpyM

57 / 100

Category: Chemistry Ch 6 Class 11

Both ionic and covalent bonds are present in:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) CH4

B) SO2

C) KCl

D) NaOH

58 / 100

Category: Chemistry

Q.88 Most electronegative element among alkali metals

A. Li

B. Na

C. K

D. Rb

59 / 100

Category: Chemistry

Sodium Benzoate on reacting with soda lime forms:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Benzoic Acid

B) Benzene

C) Toluene

D) Benzaldehyde

60 / 100

Category: Chemistry Ch 14 Class 12

________ is used as a preservative for life specimens.

NTS 2012
Chemistry
Macromolecules
Elimination Tool:

B) Ammonia

C) Methanol

D) NaOH

E) Formalin

61 / 100

Category: Chemistry Ch 7 Class 12

The coal used for domestic purposes is: –

Lignite

Anthracite

Bituminous

Sub bituminous

62 / 100

Category: Chemistry Ch 7 Class 12

In SN1 reaction “1” stands for?

NTS 2016 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Polar solvents

B) Unimolecular

C) Bimolecular

D) Nucleophile

63 / 100

Category: Chemistry Ch 15 Class 12

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

A) Bacteria

B) Yeast

C) Fungi

D) Algae

64 / 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
Elimination Tool:

A) K2CO3

B) Li2CO3

C) Na2CO3

D) Rb2CO3

65 / 100

Category: Chemistry Ch 5 Class 11

Which of the following quantum numbers are for p-subshell?

a

b

c

d

66 / 100

Category: Chemistry Ch 9 Class 11

Which statement is correct?

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

A) Amorphous solids have sharp melting Points

B) Amorphous solids have zero percent arranged

C) Amorphous Solids have a range of melting points

D) Amorphous solids have definite heat of fusion

67 / 100

Category: Chemistry Ch 11 Class 11

Activated complex is formed due to

PMC Sample 3
Chemistry
Reaction Kinetics
Elimination Tool:

A) Pressure

B) Temperature

C) Effective collision

D) Ineffective collision

68 / 100

Category: Chemistry Ch 1 Class 11

Natural gas in homes burns in excess of oxygen, what is the limiting reactant in this case?

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

A) Oxygen

B) Natural gas

C) Air

D) There is no limiting reactant

69 / 100

Category: Chemistry Ch 5 Class 11

Which of the following statements is correct?

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

A) Faraday's experiment indicates the existence of electrons

B) Crookes tube experiment shows the presence of electrons and protons in the atoms

C) Radioactivity confirms the presence of electrons and protons

D) Chadwick experiment shows the presence of neutrons

E) All of these

70 / 100

Category: Chemistry Ch 4 Class 12

Paramagnetic elements contain:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) All paired electrons

B) All unpaired electrons

C) Few unpaired electrons.

D) Unequal electrons and protons

71 / 100

Category: Chemistry Ch 12 Class 12

Tollen’s test is used for the detection of:

Aldehydes

Ketones

Carbonyl group

None of these

72 / 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+

73 / 100

Category: Chemistry Ch 9 Class 12

The four bonds of carbon in methane are directed towards the corners of a:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

A) Cube

B) Pentagon

C) Hexagon

D) Tetrahedron

74 / 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

75 / 100

Category: Chemistry Ch 9 Class 12

How many chain isomers of Pentane is possible?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Two

B) Four

C) Three

D) Five

76 / 100

Category: Chemistry Ch 9 Class 12

Acetylene upon heating at 300 C gives:

Benzene

Alkene

Alkane

Alcohol

77 / 100

Category: Chemistry Ch 10 Class 11

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

A) Decreases

B) Increases

C) Remains constant

D) Both decreases and increases

78 / 100

Category: Chemistry Ch 4 Class 12

In rhombic sulphur there are atoms in each molecule?

7

8

6

9

79 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) I

B) Br

C) Cl

D) F

80 / 100

Category: Chemistry Ch 4 Class 12

Au3+ has __________ configuration.

PMC Practice 5
Chemistry
d and f Block Elements
Elimination Tool:

A) 5d7

B) 4d9

C) 5d8

D) 5d10

81 / 100

Category: Chemistry Ch 7 Class 12

Which of the following intermediate has the complete octet around the carbon atom.

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Free radical

B) Carbanion

C) Carbonium ion

D) None of these

82 / 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

83 / 100

Category: Chemistry Ch 15 Class 12

Urea is the most widely used nitrogen fertilizer in Pakistan. Its composition is:

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

A) NH2CO

B) N2H5CO2

C) N2H4CO2

D) N2H4CO

84 / 100

Category: Chemistry Ch 7 Class 11

Which ion will have a maximum value of the heat of hydration?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

A) Al+3

B) Cs+

C) Ba+

D) Mg+2

85 / 100

Category: Chemistry Ch 4 Class 11

Which of the following solids is isotropic?

PMC Practice 6
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Ionic solids

B) Molecular solids

C) Amorphous solids

D) Metallic solids

86 / 100

Category: Chemistry

Reaction mechanism of alkanes with halogens is known as;

NUMS Mock 3
Chemistry
Alkyl Halides and Amines

A) Propagation

B) Free radical substitution

C) Addition

D) Elimination

87 / 100

Category: Chemistry

Q.89 Iftwo substituents are present at 1,4 positions then the isomer is called As____________?

A. Ortho

B. Meta

C.Para

D.None of these

88 / 100

Category: Chemistry Ch 4 Class 12

The transition elements belongs to Group VI B are

PMC Practice 6
Chemistry
d and f Block Elements
Elimination Tool:

A) Zn, Cd, Hg

B) Fe, Ru, Os

C) Mn, Te, Re

D) Cr, Mo, W

89 / 100

Category: Chemistry Ch 4 Class 11

If the absolute temperature of a gas is reduced to one half and the pressure is doubled, the volume of gas will be:

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

A) Increased four times

B) Decreased four times

C) Remained unchanged

D) Reduced to one half

90 / 100

Category: Chemistry Ch 8 Class 12

Benzene can be prepared from:

NTS 2011
Chemistry
Hydrocarbons
Elimination Tool:

A) From Petroleum

B) From Coal

C) From Acetylene

D) From Phenol

E) Al of these

91 / 100

Category: Chemistry Ch 3 Class 11

Glass is a/an:

NTS 2014
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Pure solid

B) Supercooled liquid

C) Mixture of sodium and calcium

D) Crystalline form of Na2CO3

92 / 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

93 / 100

Category: Chemistry

Q.155 In proteins the H bonding is present between

A.C-H

B. N-H

C.0-H

D. Cl-H

94 / 100

Category: Chemistry Ch 13 Class 12

Acetic anhydride is a product of acetic acid, as a result of the following reaction:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Dehydration

B) Reduction

C) Oxidation

D) Esterification

95 / 100

Category: Chemistry

Formula of hydrogen peroxide

HO

H202

H02

H302

96 / 100

Category: Chemistry Ch 3 Class 11

The Unit cell with crystallographic dimensions a = b ≠c ,α = β = γ = 90 degrees is:

NTS 2015 DUHS and JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Cubic

B) Tetragonal

C) Monoclinic

D) Hexagonal

97 / 100

Category: Chemistry

Hydrolysis of acyl chloride results in the formation of:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Acid anhydride

B) Carboxylic acid

C) Amides

D) Esters

98 / 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

99 / 100

Category: Chemistry Ch 4 Class 11

How many atmospheres correspond to 1050 torr?

NTS 2019
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 1.050

B) 10.38

C) 1.380

D) 2.760

100 / 100

Category: Chemistry Ch 3 Class 12

Which of the following has the maximum number of unpaired d electrons?

NTS 2016 DUHS & JSMU
Chemistry
d and f Block Elements
Elimination Tool:

A) Mg 2+

B) Ti 3+

C) V 3+

D) Fe 2+

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