Chemistry MCQs

Option A: synthetic

Option B: Protein

Option C: Cellulose

Option D: Nylon 

Correct Answer: Nylon  ✔

Option A: 1/2sec

Option B: 1/3rd

Option C: 1/4th

Option D: 1/5th

Correct Answer: 1/3rd ✔

Option A: Bacteria

Option B: Virus

Option C: Fungi

Option D: Algae

Correct Answer: Algae ✔

Option A: Einstein

Option B: Dr.A.Walash

Option C: Schwartz

Option D: S.E.Manhan

Correct Answer: Schwartz ✔

Option A: isotope

Option B: isobar

Option C: isotone

Option D: None of these

Correct Answer: isotone ✔

Option A: 14.34%

Option B: 18.56%

Option C: 13.86%

Option D: None of these

Correct Answer: 13.86% ✔

Option A: 9

Option B: 6.5-7

Option C: 8

Option D: 12

Correct Answer: 6.5-7 ✔

Option A: Decantation

Option B: Sublimation

Option C: Evaporation

Option D: None

Correct Answer: Sublimation ✔

Option A: 78°C

Option B: 58°C

Option C: 73°C

Option D: 56°C

Correct Answer: 78°C ✔

Option A: Due to Hydrogen bonding

Option B: Due to high molecular weight

Option C: Due to its Acidic nature

Option D: Due to its Low molecular weight

Correct Answer: Due to Hydrogen bonding ✔

Option A: To check its Acidity and Basicity

Option B: To Check temperature

Option C: To check its Purity and nature

Option D: None of These

Correct Answer: To check its Purity and nature ✔

Option A: Sand and Iron Filing

Option B: Sand and Naphthalene

Option C: Both A & B

Option D: None

Correct Answer: Sand and Naphthalene ✔

Option A: Si2O3

Option B: SiO2

Option C: Al2O3

Option D: Sr2O

Correct Answer: SiO2 ✔

Option A: Addition reaction

Option B: Substitution reactions

Option C: Halogenation

Option D: All of these

Correct Answer: Substitution reactions ✔

Option A: 456kJ/mol

Option B: 562kJ/mol

Option C: 281kJ/mol

Option D: None

Correct Answer: 562kJ/mol ✔

Option A: Iron

Option B: Calcium

Option C: Mercury

Option D: Chromium

Correct Answer: Chromium ✔

A. Compound
B. Element
C. Electrolyte
D. Mixture

Submitted by: Ali Mallah

In chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
Air is an example of gas solution as it is an homogeneous mixture of several gases.

Correct Answer: D. Mixture ✔

Option A: 1s2,2s2,2p6

Option B: 1s2,2s2,2p6,3s2

Option C: 1s2,2s2,2p6,3s1

Option D: None of these

Correct Answer: 1s2,2s2,2p6 ✔

Option A: Animal wastes

Option B: Forest residues

Option C: Aquatic plants

Option D: None of these

Correct Answer: Animal wastes ✔

Option A: Pauli exclusion principle

Option B: Hund’s rule

Option C: Aufbau’s principle

Option D: Le-Chatelier’s principle

Correct Answer: C. Aufbau’s principle ✔

Option A: Glycerine

Option B: Water

Option C: Honey

Option D: Spirit

Correct Answer: Honey ✔

Option A: 57% N

Option B: 73% N

Option C: 46% N

Option D: 53% N

Correct Answer: 46% N ✔

Option A: Hydrogen gas

Option B: Water

Option C: Bromine

Option D: Hydrochloric acid

Correct Answer: Water ✔

Option A: Boltzmann

Option B: Gibbs

Option C: Carnot

Option D: Mexwell

Correct Answer: Gibbs ✔

Option A: Longitudinal wave

Option B: Elastic wave

Option C: Transverse wave

Option D: Electromagnetic wave

Correct Answer: Elastic wave ✔

Option A: Carbon dioxide

Option B: Acetylene

Option C: Ethane

Option D: Ethylene

Correct Answer: Ethylene ✔

Option A: Atrophy

Option B: Dysplasia

Option C: Metaplasia

Option D: Hypertrophy

Correct Answer: Metaplasia ✔

Option A: Water

Option B: Stone

Option C: Both

Option D: None

Correct Answer: Stone ✔

Option A: 4

Option B: 2

Option C: 3

Option D: 5

Correct Answer: 3 ✔

Option A: Weight

Option B: Valency

Option C: Size

Option D: Chemical property

Correct Answer: Weight ✔

Option A: Causes skin cancer

Option B: Causes anemia

Option C: Alters body tissue

Option D: is unstable

Correct Answer: Causes skin cancer ✔

Option A: Aerosol

Option B: Ozone

Option C: Acid rain

Option D: PAN

Correct Answer: Acid rain ✔

Option A: Bitumen

Option B: Bauxite

Option C: Metalloids

Option D: Ores

Correct Answer: Ores ✔

Option A: 6 feet

Option B: 6 meters

Option C: 60 feet

Option D: 100 cm

Correct Answer: 6 feet ✔

Option A: Snow

Option B: Storm

Option C: Intense heat

Option D: Rainfall

Correct Answer: Rainfall ✔

Option A: 97 to 104

Option B: 101 to 115

Option C: 89 to 103

Option D: 36 to 43

Correct Answer: 89 to 103 ✔

Option A: Allotrope

Option B: Isomers

Option C: Isomorphs

Option D: Isotopes

Correct Answer: Allotrope ✔

Option A: 75%

Option B: 81%

Option C: 73%

Option D: 89%

Correct Answer: 73% ✔

Option A: Boron

Option B: Saffron

Option C: Rayon

Option D: None of these

Correct Answer: Rayon ✔

Option A: Cu Tubing used

Option B: Steel tubes used

Option C: Both a & b

Option D: Material does not effect by refrigerant

Correct Answer: Steel tubes used ✔

A. Peptide
B. Enzymes
C. Primary protein
D. Secondary proteins

Submitted by: Rashid Mehmood

Correct Answer: Enzymes ✔

Option A: Thermometer

Option B: Viscometer

Option C: PH Scale

Option D: Stagmometer

Correct Answer: Ali Jan ✔

Option A: CFCs

Option B: CH3COOH

Option C: BOTH A & B

Option D: None Of These

Correct Answer: CFCs ✔

Option A: Chlorine

Option B: lithium

Option C: Helium

Option D: Neon

Correct Answer: lithium ✔

Option A: 2 moles of gas

Option B: 1 mole of gas

Option C: 5 moles of gas

Option D: 3moles of gas

Correct Answer: 1 mole of gas ✔

Option A: Drying

Option B: Filtration

Option C: Sieving

Option D: Extraction

Correct Answer: Filtration ✔

Option A: Raised

Option B: Depressed

Option C: Compressed

Option D: Remains same

Correct Answer: Depressed ✔

Option A: Arithmetical values

Option B: Numerical values

Option C: Leometric values

Option D: Logical values

Correct Answer: Numerical values ✔

Option A: 75.2pm

Option B: 75.3pm

Option C: 75.5pm

Option D: 75.4pm

Correct Answer: 75.4pm ✔

Option A: Electronic shells

Option B: Proton shells

Option C: Neutron shells

Option D: Nucleus

Correct Answer: Electronic shells ✔

Option A: Solution

Option B: Mixtures

Option C: Molecules

Option D: Atoms

Correct Answer: Mixtures ✔

Option A: 10 disintegration per second

Option B: 1.5 disintegration per second

Option C: 0.01 disintegration per second

Option D: 1 disintegration per second

Correct Answer: 1 disintegration per second ✔

Option A: Beta particle

Option B: Gamma particle

Option C: Alpha particle

Option D: Negative particle

Correct Answer: Alpha particle ✔

Option A: Radio elements

Option B: Active elements

Option C: Radioactive elements

Option D: Nuclear elements

Correct Answer: Radioactive elements ✔

Option A: e

Option B: 2e

Option C: 3e

Option D: 4e

Correct Answer: e ✔

Option A: Nitrosucrose

Option B: Glucose+ fructose

Option C: Oxalic acid

Option D: Laevulinic acid

Correct Answer: Nitrosucrose ✔

Option A: 1-α-D- glucopyranosyl-2-β-D-fructopyranoside

Option B: 11-α-D-glucopyranosyl-2-β-D-fructofuranoside

Option C: 1-α-D- glucofuranosyl-2-α-D- fructopyranoside

Option D: 1-β- D- glucofuranosyl-2-α- D- fructofuranoside

Correct Answer: 1-α-D- glucopyranosyl-2-β-D-fructopyranoside ✔

A. 2
B. 4
C. 7
D.16

Submitted by: Muhammad Ali Kunbhar

Correct Answer: D.16 ✔

Option A: Azolo

Option B: Azine

Option C: Azolidins

Option D: Diazine

Correct Answer: Azine ✔

Option A: Sp

Option B: Sp2

Option C: Sp3

Option D: It is not hybridized

Correct Answer: Sp ✔

Option A: Sodium hexadecanoate

Option B: Sodium octadecanoate

Option C: Sodium pentadecanoate

Option D: Both A & B

Correct Answer: D. Both A & B ✔

Option A: CuS

Option B: CdS

Option C: PbS

Option D: AgCl

Correct Answer: AgCl ✔

Option A: 0.065gm

Option B: 0.65gm

Option C: 6.5gm

Option D: 7.5gm

Correct Answer: 7.5gm ✔

Option A: 0.12g

Option B: 0.16g

Option C: 0.18g

Option D: 0.24g

Correct Answer: 0.18g ✔

Option A: 24

Option B: 32

Option C: 36

Option D: 40

Correct Answer: 40 ✔

Option A: K2Cr2O7

Option B: H2SO4

Option C: SO3

Option D: P2O5

Correct Answer: K2Cr2O7 ✔

Option A: PbCrO4

Option B: PbI2

Option C: As2Cr2O7

Option D: BaCrO4

Correct Answer: PbCrO4 ✔

Option A: Z

Option B: T

Option C: Tn

Option D: W

Correct Answer: W ✔

Option A: Zero Valency

Option B: Zero Electronegativity

Option C: Zero Electron Affinity

Option D: Both A and B

Correct Answer: Both A and B ✔

Option A: C2H2O4

Option B: CH2

Option C: CH2O

Option D: CHO2

Correct Answer: CHO2 ✔

A. (CH3)2CHOH
B. CH3(CH2)OH
C. CH3CH2OH
D. (CH3)3COH

Submitted by: Muhammad Ali Kunbhar

Correct Answer: D. (CH3)3COH ✔

Option A: Kp > kc

Option B: Kc > kp

Option C: Kp= kc

Option D: Kp ≤ kc

Correct Answer: Kp= kc ✔

Option A: Acid is strong

Option B: Acid is weak

Option C: Bade is strong

Option D: Acid is strong base is weak

Correct Answer: Acid is strong ✔

A. mono dentate
B. Bi dentate
C. tri dentate
D. Poly dentate

Submitted by: Muhammad Ali Kunbhar

Correct Answer: Bi dentate ✔

Option A: PbS

Option B: HgS

Option C: AS2S3

Option D: FeS2

Correct Answer: PbS ✔

A. Bonding theory
B. Band theory
C. Antibondingtheory
D.π and σ bonding theory

Submitted by: Muhammad Ali Kunbhar

Correct Answer: Antibondingtheory ✔

Option A: Sp2

Option B: Sp3

Option C: Sp

Option D: dsp2

Correct Answer: Sp ✔

Option A: Trigonal bipyramidal

Option B: Linear

Option C: Square bipyramidal

Option D: Both A and C

Correct Answer: Linear ✔

Option A: V-shaped

Option B: Angular

Option C: Pyramidal

Option D: Triangular planer

Correct Answer: V-shaped ✔

Option A: Ortho burate

Option B: Meta borate

Option C: Double oxide

Option D: Tetra borate

Correct Answer: Meta borate ✔

Option A: Zero

Option B: 20

Option C: 80

Option D: 70

Correct Answer: Zero ✔

Option A: Mn

Option B: Ni

Option C: Sb

Option D: Sn

Correct Answer: Sn ✔

Option A: Potassium

Option B: Graphite

Option C: Diamond

Option D: Sodium

Correct Answer: Graphite ✔

Option A: Sp- hybridisation

Option B: Sp2- hybridisation

Option C: Sp3- hybridisation

Option D: Sp3d2- hybridisation

Correct Answer: Sp- hybridisation ✔

Option A: Cl

Option B: Br

Option C: I

Option D: F

Correct Answer: Cl ✔

Option A: Planar

Option B: Non- polar

Option C: Spherical

Option D: Linear

Correct Answer: Non- polar ✔

Option A: 4.8

Option B: 5.2

Option C: 8.8

Option D: 8.4

Correct Answer: 8.4 ✔

Option A: 10 grams of H2O2 solution liberate 10 mL of O2 at STO

Option B: 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP

Option C: 10 litres of H2O2 liberates 19 mL of O2 at STP

Option D: 1mL of solution of H2O2 liberates 10 mL of O2 at STP

Correct Answer: 1mL of solution of H2O2 liberates 10 mL of O2 at STP ✔

Option A: Ne, 4p2

Option B: Ar, 4s2

Option C: Ne, 4s2

Option D: Kr,4p2

Correct Answer: Ar, 4s2 ✔

Option A: S-block

Option B: P-block

Option C: d-block

Option D: f-block

Correct Answer: f-block ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 3 ✔

Option A: CaSO4

Option B: CaSO4.1/2H2O

Option C: CaSO4,2H2O

Option D: CaSO4.3H2O

Correct Answer: CaSO4 ✔

Option A: CaO+ SiO2——> CaSiO3

Option B: 2FeS+3O2——–> 2Fe+ SO2

Option C: FeSiO3———> FeSiO3

Option D: Fe2O3+ 3CO——–> 2Fe+ 3CO2

Correct Answer: D. Fe2O3+ 3CO——–> 2Fe+ 3CO2 ✔

Option A: Iron

Option B: Sodium

Option C: Silver

Option D: Zinc

Correct Answer: Silver ✔

Option A: C

Option B: Zn

Option C: Al

Option D: Cu

Correct Answer: C ✔

Option A: Roasting

Option B: Forth flotation

Option C: Electrolysis

Option D: Distillation

Correct Answer: Forth flotation ✔

Option A: MnO2

Option B: Mn2O3

Option C: Mn2O7

Option D: MnO

Correct Answer: MnO2 ✔

Option A: Reduce it

Option B: Oxidize it

Option C: Obtain an alloy

Option D: Separate volatile impurities

Correct Answer: Reduce it ✔

Option A: n=2,l=1,m1=0,ms=+1/2

Option B: n=2,l=1,m1=-1,ms=+1/2

Option C: n=2,l=0,m1=0,ms=-1/2

Option D: n=2,l=2,m1=1,ms=-1/2

Correct Answer: n=2,l=2,m1=1,ms=-1/2 ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 3 ✔