Chemistry Practice Tests 3 - PLS Academy

Chemistry Practice Test 3

Chemistry Practice Test 3 is designed to help students strengthen their understanding of key chemistry concepts, formulas, and reactions for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from organic chemistry, functional groups, hydrocarbons, and reactions of organic compounds, helping students improve accuracy and problem-solving skills.

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1 / 100

Category: Chemistry

An electron is suited midway between two parallel plates 0.5cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e=-1.6×10-19)

NUMS Mock 4
Physics
Electrostatics

A) 1.82×10-15 N

B) 3.00×10-16 N

C) 1.92×10-15 N

D) 3.00×10-15 N

2 / 100

Category: Chemistry Ch 10 Class 12

Ethylamine can be prepared by the action of bromine and caustic potash on:

NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Acetamide

B) Propionamide

C) Formaide

D) Methyl cyanide

3 / 100

Category: Chemistry Ch 3 Class 12

What is the chemical name of SANDUR?

Tetraplumbic oxide

Triplumbic oxide

Triplumbic tetraoxide

Lead dioxide

4 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has a lone pair of electrons on the central atom?

PCI3

NH4

PCI

CH4

5 / 100

Category: Chemistry Ch 15 Class 12

Which of the pair of gases is not a greenhouse gas?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

A) Carbon dioxide and methane

B) Carbon dioxide and nitric oxide

C) Nitrogen and oxygen

D) Water vapour and ozone

6 / 100

Category: Chemistry Ch 12 Class 12

Methyl Magnesium Bromide reacts with formaldehyde. The product will be:

Methyl Alcohol

Acetone

Ethyl Alcohol

Ethane

7 / 100

Category: Chemistry Ch 15 Class 12

Ammonium nitrate contain nitrogen

8 / 100

Category: Chemistry Ch 8 Class 11

According to the law of mass action, “The rate of chemical reaction” is proportional to the:

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The amount of product formed

B) Product of the molar concentration of reactants

C) The initial concentration of reactants

D) Catalyst

9 / 100

Category: Chemistry Ch 15 Class 12

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

A) Filtration

B) Fractional distillation

C) Steam distillation

D) Fractional sublimation

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:

A) Charles's law

B) Boyle's law

C) Avogadro's law

D) Pascal's law

11 / 100

Category: Chemistry

Water has maximum density at:

NUMS Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids

A) -4 C

B) – 1 C

C) 0 C

D) 4 C

12 / 100

Category: Chemistry Ch 1 Class 11

The unit used to express the relative atomic mass is called

PMC Practice 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Gram unit

B) Avogadro's number

C) Atomic mass

D) Atomic mass unit

13 / 100

Category: Chemistry Ch 10 Class 12

In the reaction of m- chlorotoluene with KNH2 in liquid NH3, the major product is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) O – toluidine

B) M – toluidine

C) P – toluidine

D) P – chloroanzr

14 / 100

Category: Chemistry Ch 2 Class 12

Aqueous solution of Na2CO3is:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Acidic

B) Alkaline

C) Both Acidic and Alkaline

D) Neutral

15 / 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

16 / 100

Category: Chemistry

Q.98 The pair of liquids having the H-bonding as dominate force of attraction in the mixture but not individually

A. Water and ethanol

B. Ethanol and hydrogen fluoride

C. Chloroform and acetone

D. Water and hydrogen fluoride

17 / 100

Category: Chemistry Ch 11 Class 11

The unit of the rate constant is the same as that of the rate of reaction in:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Zero order reaction

B) First order reaction

C) Second order reaction

D) Third order reaction

18 / 100

Category: Chemistry Ch 1 Class 12

Transition elements have coloured compounds because:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) Their bond energy is low

B) they easily absorb energy

C) splitting of the five degenerate d-orbitals take place

D) d-orbitals are very close to p-orbitals

19 / 100

Category: Chemistry Ch 1 Class 11

What will be the mass in grams of 12 gram atom of carbon atoms?

12.66 x 10^-24

1.66 x 10^-24

1.992 x 10^-23

2.660 x 10^-23

20 / 100

Category: Chemistry

Q.105 Ethane is obtained by electrolyzing-

A. Potassium format

B. Potassium succinate

C. Potassium acetate

D. Potassium fumarate

21 / 100

Category: Chemistry Ch 10 Class 12

In alkyl halide, the halide ion has charge on it when attached to C-atom.

Positive

Negative

Partial positive

Partial negative

22 / 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:

A) 0.295 M

B) 0.385 M

C) 0.531 M

D) 0.473 M

23 / 100

Category: Chemistry

Q.33 Rate constant is denoted by?

A. k

B. kr

C. kv

D.ks

24 / 100

Category: Chemistry Ch 10 Class 11

Oxidation number of particular element can be directly or indirectly inferred from its:

UHS 2019
Chemistry
Electrochemistry
Elimination Tool:

A) Group number

B) Atomic size

C) Atomic mass

D) Physical state

25 / 100

Category: Chemistry Ch 7 Class 11

In those reactions where determination of enthalpy value is difficult by experiments, in such cases enthalpy value can be calculated by:

NTS 2014
Chemistry
Thermochemistry
Elimination Tool:

A) Hess's law

B) Henry's law

C) Kirchoff's law

D) Clapeyron equation ‘

26 / 100

Category: Chemistry Ch 12 Class 12

Methyl ketones can be characterized by performing:

NUMS 2018
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Iodoform test

B) Schiff’s test

C) Benedict’s reagent test

D) Tollen’s test

27 / 100

Category: Chemistry Ch 1 Class 11

4 gram atoms of carbon has a mass of:

28 / 100

Category: Chemistry Ch 3 Class 12

Aluminum silicate is used In:

Cement

Glass

Urea

None of these

29 / 100

Category: Chemistry Ch 14 Class 12

Allotropes are of same?

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

A) Compounds

B) Molecules

C) Ions

D) Elements

30 / 100

Category: Chemistry Ch 13 Class 12

Lysine is a
amino acid

Acidic

Basic

Neutral

Amphoteric

31 / 100

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

A) KMnO4

B) Chloramines

C) O3

D) Alums

32 / 100

Category: Chemistry Ch 15 Class 12

1500•degree Celsius furnace temperature Is maintained at which zone?

Heating

Burning

Decomposition

Roth b and c

33 / 100

Category: Chemistry Ch 8 Class 11

What is correct relation between Kw, Kb and Ka?

Kw=Ka/ Kb

Kw=Kb/ Ka

Kw=Ka*Kb

Kw=Kb-Ka

34 / 100

Category: Chemistry Ch 3 Class 11

Statement of Graham’s Law is

The rate of diffusion is directly proportional to the square root of its density

The rate of diffusion is inversely proportional to the square of its density

The rate of diffusion is inversely proportional to its density.

The rate of diffusion is inversely proportional to the square root of its density

35 / 100

Category: Chemistry Ch 8 Class 12

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

Alkyl halide

Alkane

Alkyl

Allcene

36 / 100

Category: Chemistry Ch 3 Class 12

Variable valency is generally exhibited by:

NUMS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) Normal elements

B) Transition elements

C) Metallic elements

D) None of them

37 / 100

Category: Chemistry Ch 2 Class 12

Color of Epsom salt Is

White

Pink

Blue

Green

38 / 100

Category: Chemistry

Q.117 The rate of esterification of alcohols is more for

A. (CH3)3 COH

B. CH3 OH

C. C2 H5 OH

D. (CH3)2 CHOH

39 / 100

Category: Chemistry Ch 3 Class 11

Liquid crystals are used for:

Making LCD

Making thermometers

Optical Imaging

All of these

40 / 100

Category: Chemistry Ch 13 Class 12

Which of the following cannot be used to convert butanoic acid to butanoyl chloride?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) PCl3

B) PCl5

C) CCl4

D) SOCl2

41 / 100

Category: Chemistry Ch 15 Class 12

In the atmosphere, CO2 is about:

FMDC 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 0.01％

B) 0.03％

C) 0.05％

D) 0.09％

42 / 100

Category: Chemistry Ch 10 Class 12

Markownikoff’s rule is best applicable to the reaction between

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) C3H6+ Br2

B) C2H4+ HCl

C) C3H8+ Br2

D) C3H6+ HBr

43 / 100

Category: Chemistry Ch 2 Class 12

Which of the following statements is true?

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Alkali metal hydroxides are stable to heat except LiOH

B) CaOH is a stronger base than NaOH

C) When NaOH is made the gas released at the cathode is C12

D) NaOH is named as caustic soda because it reacts with fats to form soap.

44 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

45 / 100

Category: Chemistry Ch 3 Class 11

According to the general gas equation, density of an ideal gas depends upon:

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

A) Pressure

B) Temperature

C) Molar Mass

D) All of these

46 / 100

Category: Chemistry

The number of amino acids found in proteins that a human body can synthesize is:

NUMS Mock 1
Chemistry
Macromolecules

A) 12

B) 10

C) 5

D) 14

47 / 100

Category: Chemistry Ch 11 Class 12

Boiling point of C2H5OH is high than phenol because:

Of Its stability

Presence of intermolecular H-bond

Both a & b

Its flammable

48 / 100

Category: Chemistry Ch 12 Class 12

Which of the following does not give iodoform test?

NUMS 2014
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Ethanol

B) Ethanal

C) Acetophenone

D) Benzophenone

49 / 100

Category: Chemistry Ch 10 Class 12

Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-CI

B) R-F

C) R-Br

D) R-I

50 / 100

Category: Chemistry Ch 6 Class 11

Which of the following hybrid orbitals has maximum “s” character?

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp3 hybrid orbital

B) Sp2 hybrid orbital

C) Sp hybrid orbital

D) Dsp2 hybrid orbital

51 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has the largest dipole moment?

HBr

HCI

52 / 100

Category: Chemistry

Which one of the following enthalpy changes is always exothermic?

NUMS Mock 4
Chemistry
Thermochemistry

A) Enthalpy of combustion

B) Enthalpy of formation

C) Enthalpy of atomization

D) Enthalpy of solution

53 / 100

Category: Chemistry

Q.85 The general name of ore CasO4. H20 is

A. Gypsum

B. Dolomite

C. Calcite

D. Plaster of Paris

54 / 100

Category: Chemistry Ch 3 Class 12

Chemical formula of powder used in carom board is?

NaHCO3

H3B03

Na2CO3

K2CO3

55 / 100

Category: Chemistry Ch 12 Class 12

Oxidation of alcohol converts it into?

Aldehyde

Tertiary Alcohol

Alkane

Carboxylic Acid

56 / 100

Category: Chemistry

Which of the following is least polarizable?

NUMS Mock 1
Chemistry
s and p Block Elements

A) Ne

B) He

C) X

D) Kr

57 / 100

Category: Chemistry

What is the correct name for this structure?

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

A) 3,3 4- trimethyl hexane

B) 1,1,2- trimethyl ethane

C) 2,2-dimethyl propane

D) 2-ethyl,1-methylethane

58 / 100

Category: Chemistry Ch 7 Class 11

Lattice Energy of ionic compounds are found by

PMC Sample 3
Chemistry
Chemical Bonding
Thermochemistry
Elimination Tool:

A) Hess' law

B) Born Habers Cycle

C) Law of Mass action

D) Law of conservation of mass

59 / 100

Category: Chemistry Ch 1 Class 12

Why transition metals have strong metallic bonding?

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) Because of high melting point

B) Because d-electrons of outer shell take part in bonding

C) Because s-electrons of outer shell take part in bonding

D) Both s and d electrons takes part in bonding

60 / 100

Category: Chemistry Ch 1 Class 11

In mass spectrometry, ionization occurs in form.

Solid

Liquid

Vapor

No ionization occurs during the process.

61 / 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

62 / 100

Category: Chemistry Ch 7 Class 11

For a reaction given below

C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol

The enthalpy of reaction is

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

A) 394 kJ / mol

B) -394 kJ / mol

C) 197 kJ / mol

D) -197 kJ / mol

63 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is the most widely used fertilizer in Pakistan?

Ammonium Nitrate

Ammonia

Calcium Nitrate

Urea

64 / 100

Category: Chemistry Ch 11 Class 11

The rate of reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A) Increases as the reaction proceeds

B) Decreases as the reaction proceeds

C) Remains unchanged

D) None of these options is correct

65 / 100

Category: Chemistry Ch 8 Class 11

Which of the following factor(s) affect a reversible chemical reaction in accordance with the Le – Chatelier Principle?

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Pressure

B) Temperature

C) Concentration

D) Pressure, concentration and temperature

66 / 100

Category: Chemistry Ch 14 Class 12

Harmful and undesirable reaction of a metal when exposed to the atmosphere or any chemical agent is known as:

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

A) Allotropy

B) Electroplating

C) Collision

E) Corrosion

67 / 100

Category: Chemistry Ch 1 Class 11

An atom is composed of electrons, protons, neutrons and ___.

PMC Practice 22
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Hyperon

B) Neutrino

C) Anti-neutrino

D) All of these options are correct

68 / 100

Category: Chemistry

The formula which shows the simplest whole number ratio for the atoms of different elements in a compound is:

NUMS Mock 1
Chemistry
Stoichiometry

A) Ionic formula

B) Structural formula

C) Empirical formula

D) Molecular formula

69 / 100

Category: Chemistry Ch 4 Class 11

Molecular solids are different from others because they

Are formed by only non-polar molecules

Have low melting point

Have high conductivity

Have high density

70 / 100

Category: Chemistry

Which of the following is locating agent?

NUMS Mock 1
Chemistry
Analytical Chemistry

A) H2S

B) CS2

C) Rubeanic acid

D) Ninhydrin

71 / 100

Category: Chemistry Ch 10 Class 12

R-X on reaction with alcohols form:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-OH

B) ROR

C) R-X-OH

D) RH

72 / 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

73 / 100

Category: Chemistry

Q.31 In case of HOCH2CH2CH2COOH, from were numbering started?

A. OH group Is give number

B. Carboxylic acid is given Number I position

C. COOH is given number 3 position

D.COOH is given number 4 position

74 / 100

Category: Chemistry

Q.111 Which one is primary alkyl halide?

A. Iso-propyl chloride

B. 2-Chloro-2-methyl propane

C. Neo-pentyl chloride

D. Chloroform

75 / 100

Category: Chemistry Ch 15 Class 12

The pH of acid rain is

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

A) 7

B) Between 5 and 7

C) Below 5

D) Between 7 and 14

76 / 100

Category: Chemistry

The mass of proton is ______ times heavier than ______.

NUMS Mock 4
Chemistry
Atomic Structure

A) 1889, electrons

B) 1886, electrons

C) 1836, protons

D) 1836, electrons

77 / 100

Category: Chemistry Ch 8 Class 11

78 / 100

Category: Chemistry Ch 7 Class 11

What is the measure of activation energy in an endothermic reaction?

UHS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) The energy of activation of backward reaction is less than that of forward reaction

B) The energy of activation of backward reaction is more that that of forward reaction.

C) The energy of activation of forward reaction is less than that of backward reaction.

D) The energy of activation of forward – backward reaction is same.

79 / 100

Category: Chemistry Ch 4 Class 11

What is the % relative humidity at 25 C and 0.01876 atm if the vapor pressure of water is 23.76 mm Hg.

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

A) 40 %

B) 50 %

C) 60 %

D) 70%

80 / 100

Category: Chemistry Ch 8 Class 12

How many chain isomers are shown by C5H12?

NTS 2018
Chemistry
Hydrocarbons
Elimination Tool:

A) 5

B) 4

C) 3

D) 2

81 / 100

Category: Chemistry

Q.69 Carbon dioxide is an Example of

A. Ionic Solid

B. Metallic Solid

C. Molecular Solid

D. Covalent Solid

82 / 100

Category: Chemistry Ch 16 Class 12

Which one is correct about Incineration of Industrial waste?

Ash buried in sea water.

Secondary chamber is maintained at temperature range 650 C to 1100 C

Smoke stacks emit oxides of nitrogen and carbo

Solids wastes are the significant sources of dioxins

83 / 100

Category: Chemistry Ch 11 Class 11

Half life period of the first order reaction depends upon:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) Initial concentration

B) Temperature

C) Catalyst

D) All of above

84 / 100

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:

A) C3H6O3

B) C4H4O2

C) C8H8O4

D) C6H6O3

85 / 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

86 / 100

Category: Chemistry Ch 4 Class 11

A liquid has mass m and specific heat capacity c. The rate of change in temperature of the liquid is R. What is the rate at which heat is transferred from the liquid.

PMC Practice 2
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Rmc

B) R/me

C) me/R

D) Rm/c

87 / 100

Category: Chemistry Ch 16 Class 12

Function of ozone Is?

To filter UV radiations

Act as a reducing agent

Act as an antibiotic

None of these

88 / 100

Category: Chemistry Ch 7 Class 12

The active part in organic molecules is called:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Homologous series

B) Functional group

C) Chemical bonding

D) Ionic complex

89 / 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

90 / 100

Category: Chemistry Ch 8 Class 12

Acetylene with Cl2 gives:

1, 2-dicholropropane

1, 1, 2, 2-tetrachloroethane

Ethane dichloride

1, 1, 2, 2-tetrachloromethene

91 / 100

Category: Chemistry Ch 8 Class 11

Precipitation occurs when the product of ionic concentrations is:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Greater than Ksp

B) Less than Ksp

C) Equal to Ksp

D) Equal to unity

92 / 100

Category: Chemistry Ch 2 Class 11

Which of the following is the chemical formula of a compound indicating the relative number of atoms in the simplest ratio?

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) Empirical formula

B) Empirical formula mass

C) Molecular formula

D) Molecular mass

93 / 100

Category: Chemistry Ch 9 Class 12

Physical properties of Ethyne is/are:

NTS 2015 DUHS and JSMU
Chemistry
Hydrocarbons
Elimination Tool:

A) It is colourless gas with a sweet smell.

B) It is sparingly soluble in water.

C) It is less dense than air.

D) It explodes on compression to a liquid because of unstable nature.

E) All of the above

94 / 100

Category: Chemistry

Q.125 Standard electrode Potential is denoted by

A. E

B. E-1

C. E0

D.d

95 / 100

Category: Chemistry Ch 11 Class 12

Phenol Acts as

Mild agent

Reducing agent

Oxidizing agent

All of the above

96 / 100

Category: Chemistry Ch 6 Class 11

The order of force of repulsion between lone pairs and Bond pairs is?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Lone pair Bond -pair repulsion > lone pair lone pair repulsion> Bond pair Bond pair repulsion

B) Bond pair -Bond pair repulsion> lone pair lone pair repulsion> lone pair Bond pair repulsion

C) lone pair lone pair repulsion> Bond pair Bond pair repulsion> lone pair Bond pair repulsion

D) lone pair lone pair repulsion> lone pair Bond pair repulsion> Bond pair Bond pair repulsion

97 / 100

Category: Chemistry

Q.99 The ionic compound with the highest lattice energy is

A. NaF

B. NaCl

C. NaBr

D. NaI

98 / 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˚

99 / 100

Category: Chemistry Ch 1 Class 11

The relative abundance of isotopes of elements are measured by?

PMC Practice 11
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Atomic spectroscopy

B) Ionic spectroscopy

C) Mass spectroscopy

D) Mass spectrometry

100 / 100

Category: Chemistry Ch 2 Class 11

While calculating vapor pressure of a liquid in manometer, the column of mercury facing the vapors of a liquid is _____ due to pressure on surface of liquid in flask.

PMC Practice 1
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

A) Compressed

B) Depressed

C) Rises

D) Lowers

Your score is

The average score is 56%

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