Chemistry MCQs

Option A: 2n

Option B: n

Option C: 3n

Option D: impossible to predict

Correct Answer: n ✔

Option A: Tetrahedral

Option B: Square planner

Option C: Trigonal bipyramidal

Option D: Trigonal Pyramidal

Correct Answer: Trigonal Pyramidal ✔

Option A: Electron deficient

Option B: Electron rich

Option C: Octet is complete

Option D: No such acids exist

Correct Answer: Electron deficient ✔

Option A: IA and VIA

Option B: IA IIA and VIIA

Option C: IB and VIIB

Option D: IA and IB

Correct Answer: IA IIA and VIIA ✔

Option A: Electronegative

Option B: Electropositive

Option C: Neutral

Option D: IA is electropositive while IIA is electronegative

Correct Answer: Electropositive ✔

Option A: Ionization potential

Option B: Electronegativity

Option C: Electron affinity

Option D: Activation energy

Correct Answer: Electron affinity ✔

Option A: Greater

Option B: Lesser

Option C: Remain same

Option D: No effect

Correct Answer: Lesser ✔

Option A: Ionization potential

Option B: Electronegativity

Option C: Electron affinity

Option D: Activation energy

Correct Answer: Ionization potential ✔

Option A: Increases

Option B: Decreases

Option C: Remain same

Option D: First decreases then increases

Correct Answer: Decreases ✔

Option A: Bond

Option B: Attractive force

Option C: Interaction

Option D: All of above represent same entity

Correct Answer: Bond ✔

Option A: F

Option B: H2O

Option C: HF

Option D: NH-2

Correct Answer: NH-2 ✔

Option A: Electron affinity

Option B: Ionic character

Option C: Ionization energy

Option D: Dipole moment

Correct Answer: Dipole moment ✔

Option A: sp3

Option B: sp2

Option C: sp

Option D: All

Correct Answer: sp2 ✔

Option A: Ionization energy

Option B: Electron affinity

Option C: Electro negativity

Option D: Atomic size

Correct Answer: Electro negativity ✔

Option A: Linear geometry

Option B: Dipole moment is zero

Option C: Sp hybridization

Option D: None

Correct Answer: Dipole moment is zero ✔

Option A: C

Option B: O

Option C: F

Option D: P

Correct Answer: P ✔

Option A: Pi

Option B: Sigma

Option C: Both

Option D: Neither

Correct Answer: Both ✔

Option A: Generally increases from left to right in a period

Option B: Does not change in a period

Option C: Increase from top to bottom in a group

Option D: Does not change in a group

Correct Answer: Generally increases from left to right in a period ✔

Option A: Length of contact

Option B: Volume of contact

Option C: Area of contact

Option D: all of above

Correct Answer: Area of contact ✔

Option A: Iodine

Option B: Benzoic acid

Option C: Ammonium chloride

Option D: Potash alum

Correct Answer: Potash alum ✔

Option A: filtered

Option B: dried

Option C: decolorized

Option D: decanted

Correct Answer: filtered ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 4 ✔

Option A: Filtrate residue

Option B: Sublimate sublimation

Option C: Drying desiccator

Option D: Separating funnel mother liquor

Correct Answer: Sublimate sublimation ✔

Option A: absorption

Option B: adsorption

Option C: filtration

Option D: sublimation

Correct Answer: filtration ✔

Option A: Stationary phase

Option B: Mobile phase

Option C: Dynamic phase

Option D: Static phase

Correct Answer: Mobile phase ✔

Option A: Mobile phase

Option B: Stationary phase

Option C: Mixed phase

Option D: Single phase

Correct Answer: Stationary phase ✔

Option A: Filter paper

Option B: Vacuum desiccators

Option C: Oven

Option D: None of these

Correct Answer: Vacuum desiccators ✔

Option A: Crystallization

Option B: Sublimation

Option C: Solvent extraction

Option D: Filtration

Correct Answer: Solvent extraction ✔

Option A: Polar solvent used

Option B: Combination of solvents used

Option C: Their different distribution coefficients in the solvent

Option D: Distributive law

Correct Answer: Their different distribution coefficients in the solvent ✔

Option A: Quantitative analysis

Option B: Qualitative analysis

Option C: Stoichiometry

Option D: Physical chemistry

Correct Answer: Qualitative analysis ✔

Option A: Crystallization

Option B: Filtration

Option C: Sublimation

Option D: Solvent extraction

Correct Answer: Sublimation ✔

Option A: Inconsistent flow of filtration

Option B: splashing

Option C: premature crystallization

Option D: all of above

Correct Answer: splashing ✔

Option A: solution

Option B: amount of insoluble solute

Option C: amount of soluble solute

Option D: Amount of solvent

Correct Answer: amount of insoluble solute ✔

Option A: Gooch crucible

Option B: Filter paper

Option C: Sintered crucible

Option D: All of the above

Correct Answer: Filter paper ✔

Option A: needed

Option B: avoided

Option C: depends on temperature

Option D: crystallization does not involve heating

Correct Answer: avoided ✔

Option A: water

Option B: iodine

Option C: hydrochloric acid

Option D: gases

Correct Answer: water ✔

Option A: oxidizing agent

Option B: reducing agent

Option C: drying agent

Option D: colouring agent

Correct Answer: drying agent ✔

Option A: Fast process

Option B: Slow process

Option C: Rapid process

Option D: All are possible

Correct Answer: Slow process ✔

Option A: Solvent extraction

Option B: sublimation

Option C: crystallization

Option D: vaporization

Correct Answer: sublimation ✔

Option A: Red colour

Option B: Purple colour

Option C: Blue colour

Option D: Yellow colour

Correct Answer: Purple colour ✔

Option A: heating

Option B: sublimation

Option C: cooling

Option D: vaporization

Correct Answer: sublimation ✔

Option A: impurities

Option B: crystals

Option C: solvents

Option D: both A & B

Correct Answer: impurities ✔

Option A: Retardation factor

Option B: Distribution co-efficient

Option C: Distribution in aqueous solution

Option D: All statements are wrong

Correct Answer: Distribution co-efficient ✔

Option A: methylated spirit

Option B: wood spirit

Option C: rectified spirit

Option D: absolute alcohol

Correct Answer: rectified spirit ✔

Option A: Filtration

Option B: Sublimation

Option C: Crystallization

Option D: Solvent extraction

Correct Answer: Solvent extraction ✔

Option A: vapourization

Option B: solvent extraction

Option C: filtration

Option D: crystallization

Correct Answer: crystallization ✔

Option A: Plastic

Option B: glass

Option C: porcetain

Option D: fiber

Correct Answer: glass ✔

Option A: plastic

Option B: fibre

Option C: porcelain

Option D: steel

Correct Answer: porcelain ✔

Option A: Insoluble particles

Option B: residue

Option C: crystals

Option D: mud

Correct Answer: residue ✔

Option A: Quantitative analysis

Option B: Qualitative analysis

Option C: Stochiometery

Option D: Physical chemistry

Correct Answer: Quantitative analysis ✔

Option A: Stoichio chemistry

Option B: Physical chemistry

Option C: Analytical chemistry

Option D: Quantum chemistry

Correct Answer: Analytical chemistry ✔

Option A: Adsorption chromatography

Option B: Ascending chromatography

Option C: Radial chromatography

Option D: Descending chromatography

Correct Answer: Ascending chromatography ✔

Option A: Melting

Option B: Sublimation

Option C: Decomposition

Option D: Condensation

Correct Answer: Sublimation ✔

Option A: Filter hot solution

Option B: Avoid premature crystallization

Option C: Increase the rate of filtration

Option D: Decrease the area

Correct Answer: Increase the rate of filtration ✔

Option A: Filtration

Option B: Crystallization

Option C: Solvent extraction

Option D: Chromatography

Correct Answer: Filtration ✔

Option A: Shape

Option B: Phase

Option C: Mechanism

Option D: All

Correct Answer: All ✔

Option A: Fast neutrons

Option B: Slow neutrons

Option C: Moderate neutrons

Option D: All are possible

Correct Answer: Fast neutrons ✔

Option A: 7f

Option B: 7s

Option C: 7p

Option D: 7d

Correct Answer: 7p ✔

Option A: Attractive forces

Option B: Repulsive force

Option C: Electrons

Option D: Neutrons

Correct Answer: Attractive forces ✔

Option A: Electron

Option B: Positron

Option C: Neutron

Option D: None of above has such capability

Correct Answer: Neutron ✔

Option A: n

Option B: 1

Option C: m

Option D: s

Correct Answer: n ✔

Option A: Moseley

Option B: Davisson and Germer

Option C: Einstein

Option D: Roentgen

Correct Answer: Davisson and Germer ✔

Option A: Orbit is cylindrical

Option B: Orbit is elliptical

Option C: Orbit is longitudinal

Option D: Orbit is asymmetrical

Correct Answer: Orbit is elliptical ✔

Option A: when electrons jump down to 2nd- orbit

Option B: when electrons jump down to 3rd- orbit

Option C: when electrons jump down to 4th- orbit

Option D: when electrons jump down to 5th- orbit

Correct Answer: when electrons jump down to 5th- orbit ✔

Option A: 1

Option B: 3

Option C: 5

Option D: 7

Correct Answer: 7 ✔

Option A: Gamma-rays

Option B: Alpha-rays

Option C: Beta-rays

Option D: X-rays

Correct Answer: Alpha-rays ✔

Option A: J.J Thomson

Option B: Millikan

Option C: Rutherford

Option D: Perrin

Correct Answer: Millikan ✔

Option A: Neutrino

Option B: Electron

Option C: Both A & B

Option D: Meson

Correct Answer: Both A & B ✔

Option A: Alpha emission

Option B: Beta emission

Option C: Both A & B

Option D: Radioactivity

Correct Answer: Beta emission ✔

Option A: 6

Option B: 12

Option C: 18

Option D: 20

Correct Answer: 18 ✔

Option A: Rutherford

Option B: Dalton

Option C: Bohr

Option D: Schrodinger

Correct Answer: Dalton ✔

Option A: Is independent of wavelength

Option B: Depends upon source

Option C: Depends upon its frequency

Option D: Equals to the square of amplitude

Correct Answer: Is independent of wavelength ✔

Option A: de-Broglie duel nature of matter

Option B: Bohrs model

Option C: Plancks Quantum theory

Option D: Rutherfords atomic model

Correct Answer: Plancks Quantum theory ✔

Option A: By burning of gas

Option B: By cooling of the gas

Option C: By the bombardment of cathode rays on gas molecules

Option D: From anode like cathode rays produced from cathode

Correct Answer: By the bombardment of cathode rays on gas molecules ✔

Option A: Temperature

Option B: Pressure

Option C: Volume

Option D: Composition of glass

Correct Answer: Composition of glass ✔

Option A: 7

Option B: 10

Option C: 12

Option D: 16

Correct Answer: 7 ✔

Option A: Principal

Option B: Azimuthal

Option C: Magnetic

Option D: Spin

Correct Answer: Azimuthal ✔

Option A: de-Broglie

Option B: Plancks

Option C: Schrodinger

Option D: Heisenberg

Correct Answer: Schrodinger ✔

Option A: Zeeman effect

Option B: Stark effect

Option C: Photoelectric effect

Option D: Compton effect

Correct Answer: Stark effect ✔

Option A: Lyman

Option B: Paschen

Option C: Pfund

Option D: Brackett

Correct Answer: Lyman ✔

Option A: Different wavelength

Option B: Different colours

Option C: Different intensities

Option D: all have little contribution

Correct Answer: Different wavelength ✔

Option A: Milk

Option B: Honey

Option C: Oil

Option D: Water

Correct Answer: Oil ✔

Option A: [Ar]4s2

Option B: [Ar]4s1

Option C: [Kr]5s1

Option D: [He]2s1

Correct Answer: [Ar]4s1 ✔

Option A: Orbital

Option B: Orbit is elliptical

Option C: subshell

Option D: Electron cloud

Correct Answer: Orbital ✔

Option A: Shorter wavelength

Option B: Larger wavelength

Option C: X-ray not produced

Option D: All are possible

Correct Answer: Shorter wavelength ✔

Option A: Beta-rays

Option B: Alpha-rays

Option C: X-rays

Option D: Gamma-rays

Correct Answer: X-rays ✔

Option A: Degenerate orbitals

Option B: Bonding molecular orbitals

Option C: Anti bonding molecular orbitals

Option D: Half filled orbitals

Correct Answer: Degenerate orbitals ✔

Option A: [Ar]4s1

Option B: [Ar]4s2

Option C: [Ar]3d104s1

Option D: [Ar]3d94s2

Correct Answer: [Ar]3d104s1 ✔

Option A: 2-times

Option B: 3-times

Option C: 4-times

Option D: 6 times

Correct Answer: 4-times ✔

Option A: In continuous manner

Option B: Discontinuous manner

Option C: Simultaneously

Option D: In the form of heat

Correct Answer: Discontinuous manner ✔

Option A: 6.02 x 1023 C/kg

Option B: 1.7588 x 1020 C/kg

Option C: 9.1095 x 10-31 C/kg

Option D: 1.7588 x 1011 C/kg

Correct Answer: 1.7588 x 1011 C/kg ✔

Option A: AgNO3 plate

Option B: AgCl plate

Option C: ZnO

Option D: ZnS

Correct Answer: ZnS ✔

Option A: Hitorff

Option B: Stoney

Option C: William Crookes

Option D: J.Perrin

Correct Answer: J.Perrin ✔

Option A: 10 torr

Option B: 1 torr

Option C: 0.1 torr

Option D: 0.01 torr

Correct Answer: 1 torr ✔

Option A: Principal of quantum number

Option B: Azimuthal quantum number

Option C: Magnetic quantum number

Option D: Spin quantum number

Correct Answer: Azimuthal quantum number ✔

Option A: Zeemans effect

Option B: Starks effect

Option C: Photo electric effect

Option D: Compton effect

Correct Answer: Zeemans effect ✔

Option A: Moving e- accelerate towards the nucleus

Option B: Continuous spectrum

Option C: behavior of electron remain unexplained

Option D: all

Correct Answer: all ✔

Option A: 9.11×10-31 Kg

Option B: Cast shadow

Option C: Heat up the platinum foil

Option D: Cannot ionize

Correct Answer: Cannot ionize ✔

Option A: Brighter

Option B: Darker

Option C: Colourless

Option D: Hard to locate

Correct Answer: Darker ✔

Option A: 6

Option B: 10

Option C: 14

Option D: 18

Correct Answer: 14 ✔