Atomic Structure MCQs

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 ✔

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. ✔