Chemistry MCQs

Option A: Principal (QN)

Option B: Azimuthal (QN)

Option C: Spin (QN)

Option D: Both A & B

Correct Answer: Azimuthal (QN) ✔

Option A: Angular momentum of electrons in multiples of h/2?

Option B: Electrons revolve in discrete circular orbits

Option C: Energy of each electron is directly proportional to n2

Option D: Electrons radiate energy continuously in a given orbit.

Correct Answer: Electrons radiate energy continuously in a given orbit. ✔

Option A: Molar heat of sublimation

Option B: Molar heat of fusion

Option C: Molar heat of vapourization

Option D: Latent heat of that liquid

Correct Answer: Molar heat of vapourization ✔

Option A: Heat of transition

Option B: Heat of fusion

Option C: Enthalpy change

Option D: All of above

Correct Answer: Enthalpy change ✔

Option A: 21

Option B: 23

Option C: 25

Option D: 27

Correct Answer: 27 ✔

Option A: Metallic

Option B: Amorphous

Option C: Crystalline

Option D: Vitreous

Correct Answer: Crystalline ✔

Option A: Infinite

Option B: Negligible

Option C: Medium

Option D: No concept of viscosity in solid

Correct Answer: Infinite ✔

Option A: Sharp melting point

Option B: Definite geometry

Option C: Transition temperature

Option D: Colour

Correct Answer: Sharp melting point ✔

Option A: Converted into wires

Option B: Converted into thin sheets

Option C: Melted easily

Option D: All of the above

Correct Answer: Converted into thin sheets ✔

Option A: crystalline solids

Option B: amorphous solids

Option C: liquid crystals

Option D: all of the above

Correct Answer: amorphous solids ✔

Option A: 40.7 KJ/mole

Option B: 40.7 J/mole

Option C: 40.7 cal/mole

Option D: 40.7 Kcal/mole

Correct Answer: 40.7 KJ/mole ✔

Option A: Liquid do not have definite shape

Option B: Liquid do not have definite volume

Option C: Lieuid is highly compressible

Option D: Liquid molecules can slide over each other

Correct Answer: Liquid molecules can slide over each other ✔

Option A: 6.022 x 1023

Option B: 3.01 x 1023

Option C: 2 x NA

Option D: 4 x 6.022 x 1023

Correct Answer: 3.01 x 1023 ✔

Option A: Surface tension

Option B: Cohesive forces

Option C: Adhesive forces

Option D: viscosity

Correct Answer: Adhesive forces ✔

Option A: Ion dipole forces

Option B: London forces

Option C: Hydrogen bonding

Option D: Dipole dipole forces

Correct Answer: London forces ✔

Option A: Change of bond angles

Option B: Cubic structure of ice

Option C: Empty space present in the structure of ice

Option D: Change of bond length

Correct Answer: Empty space present in the structure of ice ✔

Option A: crystallization

Option B: evaporization

Option C: vaporization

Option D: condensation

Correct Answer: condensation ✔

Option A: Latent heat of fusion

Option B: Latent heat of vaporization

Option C: Latent heat of sublimation

Option D: All of the above

Correct Answer: Latent heat of vaporization ✔

Option A: Equal to that of ice

Option B: Greater than that of ice

Option C: Less than that of ice

Option D: All are possible

Correct Answer: Greater than that of ice ✔

Option A: Iron

Option B: Graphite

Option C: Silver

Option D: Platinum

Correct Answer: Graphite ✔

Option A: Water

Option B: Ethyl alcohol

Option C: Phenol

Option D: Diethyl ether

Correct Answer: Diethyl ether ✔

Option A: Surface phenomenon

Option B: Continuous

Option C: Exothermic

Option D: Cause cooling

Correct Answer: Exothermic ✔

Option A: ABAB (hexagonal)

Option B: ABCABC (Cubic)

Option C: Orthor hombic

Option D: Rhombohedral

Correct Answer: ABAB (hexagonal) ✔

Option A: Hydrogen Chloride (HCI)

Option B: Chlorine (Cl2)

Option C: Xenon(Xe)

Option D: Sodium Chloride (NaCI)

Correct Answer: Sodium Chloride (NaCI) ✔

Option A: Negative

Option B: Positive

Option C: May or may not be A or B

Option D: none

Correct Answer: May or may not be A or B ✔

Option A: 0 atmosphere

Option B: one atmosphere

Option C: 2 atmosphere

Option D: 10 atmosphere

Correct Answer: one atmosphere ✔

Option A: Same physical and chemical properties

Option B: Same physical and different chemical properties

Option C: Different physical and same chemical properties

Option D: Different physical and chemical properties

Correct Answer: Different physical and chemical properties ✔

Option A: Sulphur

Option B: Carbon

Option C: Silica

Option D: Tin

Correct Answer: Carbon ✔

Option A: Isomorphism

Option B: Polymorphism

Option C: Anisotropy

Option D: Allotropy

Correct Answer: Polymorphism ✔

Option A: More strength of H-bonding

Option B: More strength of London forces

Option C: Less polarizability

Option D: All of the above

Correct Answer: More strength of London forces ✔

Option A: No definite geometry

Option B: No definite heat of fusion

Option C: No sharp melting points

Option D: All of the above

Correct Answer: No sharp melting points ✔

Option A: Atoms

Option B: Ions

Option C: Molecules

Option D: A, B, and C

Correct Answer: A, B, and C ✔

Option A: increase

Option B: remains constant

Option C: decrease

Option D: there will be no boiling

Correct Answer: remains constant ✔

Option A: Diethyl ether

Option B: Ethyl alcohol

Option C: Water

Option D: Ethylene glycol

Correct Answer: Diethyl ether ✔

Option A: ionization

Option B: condensation

Option C: fusion

Option D: evaporation

Correct Answer: condensation ✔

Option A: Face centered cubic lattice

Option B: body centered cubic lattice

Option C: simple cubic lattice

Option D: othorhombic lattice

Correct Answer: body centered cubic lattice ✔

Option A: Surface area

Option B: temperature

Option C: intermolecular forces

Option D: atmospheric pressure

Correct Answer: Surface area ✔

Option A: Dipole-dipole forces

Option B: Ion dipole-dipole forces

Option C: London dispersion forces

Option D: Debye forces

Correct Answer: Dipole-dipole forces ✔

Option A: vapourization

Option B: evaporation

Option C: condensation

Option D: cracking

Correct Answer: evaporation ✔

Option A: 0°C

Option B: 2°C

Option C: 4°C

Option D: 100°C

Correct Answer: 4°C ✔

Option A: vaporization

Option B: evaporation

Option C: crystallization

Option D: sublimation

Correct Answer: vaporization ✔

Option A: Reduction occurs at anode

Option B: K+ ion transfer from salt bridge to left beaker of ZnSO4

Option C: Oxidation occurs at cathode

Option D: Anode is negatively charged

Correct Answer: Anode is negatively charged ✔

Option A: Oxidation potential

Option B: Redox potential

Option C: e.m.f of cell

Option D: standard reduction potential

Correct Answer: standard reduction potential ✔

Option A: 8

Option B: 5.1

Option C: 6

Option D: one/fifty one

Correct Answer: one/fifty one ✔

Option A: N2+3H2 2NH3

Option B: H2+I2 2HI

Option C: 2NO2 N2H4

Option D: PCI5 PCI3+CI2

Correct Answer: 2NO2 N2H4 ✔

Option A: X – ray diffraction

Option B: Spectrophotometer

Option C: Optical microscope

Option D: Electron microscope

Correct Answer: A. X – ray diffraction ✔

Option A: Plancks theory

Option B: Dual nature of matter

Option C: Heisenbergs uncertainty principle

Option D: All of these

Correct Answer: Heisenbergs uncertainty principle ✔

Option A: CaF2

Option B: NaCl

Option C: Glass

Option D: Diamond

Correct Answer: Glass ✔

Option A: Fluorescent bulb

Option B: Neon signs

Option C: Lasers

Option D: All of these

Correct Answer: All of these ✔

Option A: Both a and b are small

Option B: Both a and b are large

Option C: a is small and b is large

Option D: a is large and b is small

Correct Answer: Both a and b are small ✔

Option A: Hot air currents

Option B: folds of filter paper

Option C: oven

Option D: Vacuum desiccator

Correct Answer: Vacuum desiccator ✔

Option A: is taken in lesser quantity in grams as compared to other reactants

Option B: is taken in lesser quantity in volume as compared to other reactants

Option C: gives the maximum amount of the product which is required

Option D: gives the minimum amount of the product under consideration

Correct Answer: gives the minimum amount of the product under consideration ✔

Option A: Nickel

Option B: Calcium

Option C: Cadmium

Option D: Tin

Correct Answer: Calcium ✔

Option A: macromolecule

Option B: macromolecule

Option C: molecularity

Option D: atomicity

Correct Answer: atomicity ✔

Option A: 1.008

Option B: 0.55

Option C: 0.184

Option D: 1.637

Correct Answer: 0.55 ✔

Option A: Ammonia

Option B: Dissolved oxygen

Option C: Carbon dioxide

Option D: All

Correct Answer: Carbon dioxide ✔

Option A: Urea

Option B: Calcium superphosphate

Option C: Diammonium phosphate

Option D: Potassium nitrate

Correct Answer: Urea ✔

Option A: Propanoic acid

Option B: Acetic acid

Option C: Phthalic acid

Option D: Butanoic acid

Correct Answer: Phthalic acid ✔

Option A: PdCl2

Option B: Cu2Cl2

Option C: CuCl2

Option D: PbCl2

Correct Answer: Cu2Cl2 ✔

Option A: n. butane

Option B: Ethanol

Option C: Ethane

Option D: Diethy1 ether

Correct Answer: Ethane ✔

Option A: Carboxylic acid

Option B: Ethanoic acid

Option C: Propanoic acid

Option D: Butanoic acid

Correct Answer: Propanoic acid ✔

Option A: Chlorobenzene

Option B: Toluene

Option C: Nitrobenzene

Option D: Benzene

Correct Answer: Toluene ✔

Option A: Phenol

Option B: Maleic anhydride

Option C: Glyoxal

Option D: Benzoic acid

Correct Answer: Maleic anhydride ✔

Option A: sp3 – sp2

Option B: sp2 – sp

Option C: sp2 – sp

Option D: sp3 – sp2 – sp

Correct Answer: D. sp3 – sp2 – sp ✔

Option A: H2SO4

Option B: KMnO4

Option C: H2S

Option D: K2CrO4

Correct Answer: H2S ✔

Option A: Iron

Option B: Cobalt

Option C: Chromium

Option D: Manganese

Correct Answer: Iron ✔

Option A: Fluorine

Option B: Chlorine

Option C: Iodine

Option D: Bromine

Correct Answer: Chlorine ✔

Option A: White

Option B: Redox potential

Option C: Black

Option D: Violet

Correct Answer: White ✔

Option A: KCI

Option B: NaCI

Option C: KCI MgCl2 6H2O

Option D: Na2CO3. 10H2O

Correct Answer: KCI ✔

Option A: s-1

Option B: mol dm-3 s-1

Option C: mol-1 dm3 s-1

Option D: mol-2 dm6 s-1

Correct Answer: s-1 ✔

Option A: Silver oxide battery

Option B: Fuel cell

Option C: Nickel cadmium cell

Option D: Lead accumulator

Correct Answer: Nickel cadmium cell ✔

Option A: 5.85% NaCl Solution

Option B: 18.0 % glucose solution

Option C: 6.0 % urea solution

Option D: All have same boiling point

Correct Answer: 5.85% NaCl Solution ✔

Option A: 2.0 x 10-10 mol dm-3

Option B: 1.414 x 10-5 mol dm-3

Option C: 1.0 x 10-10 mol dm-3

Option D: 1.0 x 10-5 mol dm-3

Correct Answer: 1.414 x 10-5 mol dm-3 ✔

Option A: qp = qv

Option B: qp < qv

Option C: qp > qv

Option D: qp = qv / 2

Correct Answer: qp > qv ✔

Option A: O2+2

Option B: N2-2

Option C: B2

Option D: O2-2

Correct Answer: N2-2 ✔

Option A: n=3 l=2

Option B: n=3 l=0

Option C: n=3 l=1

Option D: n=3 l=3

Correct Answer: n=3 l=1 ✔

Option A: Molecules of water in liquid state

Option B: Atoms of helium in gaseous state at high temperature

Option C: Molecules of hydrogen chloride gas

Option D: Molecules of solid iodine

Correct Answer: Molecules of solid iodine ✔

Option A: Ionic crystal

Option B: Covalent crystal

Option C: Molecular crystal

Option D: Any type of crystal

Correct Answer: Molecular crystal ✔

Option A: one / seventeen

Option B: sixteen / seventeen

Option C: one / three

Option D: two / three

Correct Answer: one / three ✔

Option A: Sublimation

Option B: Crystallisation

Option C: Solvent extraction

Option D: Distillation

Correct Answer: Solvent extraction ✔

Option A: Nature of reactants

Option B: Nature of crucible

Option C: Nature of product

Option D: Nature of precipitate

Correct Answer: Nature of precipitate ✔

Option A: 50% KOH

Option B: Lime water

Option C: CaCl2

Option D: Mg (CIO4)2

Correct Answer: Mg (CIO4)2 ✔

Option A: F – Cl – Br

Option B: Li+1 – Na+1 – K+1

Option C: F – Ne – Na+

Option D: H+ – H- – H

Correct Answer: C. F – Ne – Na+ ✔

Option A: 22.4 dm3

Option B: 2.24 dm3

Option C: 1.12 cm3

Option D: 1.12 dm3

Correct Answer: 1.12 dm3 ✔

Option A: Ethylene iodide

Option B: Ethylene bromide

Option C: Ethylene chloride

Option D: Ethylene fluoride

Correct Answer: Ethylene bromide ✔

Option A: Aluminium

Option B: Sodium

Option C: Carbon

Option D: Sulphur

Correct Answer: Sodium ✔

Option A: H2SO4

Option B: HNO3

Option C: both A and B

Option D: none of the above

Correct Answer: both A and B ✔

Option A: First order reaction

Option B: Second order reaction

Option C: Zero order reaction

Option D: Third order reaction

Correct Answer: Zero order reaction ✔

Option A: Pd

Option B: Ni

Option C: Sn

Option D: All of the above

Correct Answer: All of the above ✔

Option A: 6

Option B: 8

Option C: 10

Option D: 4

Correct Answer: 10 ✔

Option A: dilute and concentrated

Option B: dilute and saturated

Option C: saturated and unsaturated

Option D: saturated and super saturated

Correct Answer: dilute and concentrated ✔

Option A: moles dm-3

Option B: moles kg-1

Option C: gram dm-3

Option D: none

Correct Answer: moles kg-1 ✔

Option A: 4.0 x 10-8

Option B: 3.2 x 10-11

Option C: 2.0 x 10-8

Option D: 4.0 x 10-12

Correct Answer: 3.2 x 10-11 ✔

Option A: Kc is constant at given temperature

Option B: Kc is unaffected by change in concentration of reactants or products

Option C: Kc indicates the extent of reaction but not about the rate of reaction.

Option D: All of the above

Correct Answer: All of the above ✔

Option A: CCI4

Option B: CO2

Option C: BF3

Option D: none of the above

Correct Answer: none of the above ✔

Option A: B

Option B: C

Option C: N

Option D: O

Correct Answer: N ✔

Option A: Fe2O3

Option B: V2O5

Option C: SO3

Option D: Ag2O

Correct Answer: V2O5 ✔

Option A: 6

Option B: 4

Option C: 3

Option D: 2

Correct Answer: 2 ✔

Option A: pink

Option B: black

Option C: yellow

Option D: brick red

Correct Answer: brick red ✔

Option A: aluminium can be recycled

Option B: aluminium has very low density

Option C: aluminium is the most abundant metal in the earth crust

Option D: aluminium is resistant to corrosion by organic acids.

Correct Answer: aluminium is resistant to corrosion by organic acids. ✔