Atomic Structure Mcqs

Our collections of Multiple choice questions and answers focuses on study of Atomic Structure in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Medical colleges entrance exams, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Atomic Structure in Chemistry comprehensively.

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1.
All of the following were theorized by Bohr in his description of the atom except

Angular momentum of electrons in multiples of h/2?

Electrons revolve in discrete circular orbits

Energy of each electron is directly proportional to n2

Electrons radiate energy continuously in a given orbit.

2.
The letters s p d and f are used to represent which quantum numbers

Principal

Azimuthal

Magnetic

Spin

3.
The magnetic quantum number (QN) has its values determined directly by the value of

Principal (QN)

Azimuthal (QN)

Spin (QN)

Both a & b

7.
When an atom absorbs energy the lines in the spectrum will appear which are

Brighter

Darker

Colourless

Hard to locate

8.
Colour of fluorescene produced by cathode rays depends upon

Temperature

Pressure

Volume

Composition of glass

9.
Which one is not true about cathode rays?

9.11x10-31 Kg

Cast shadow

Heat up the platinum foil

Cannot ionize

10.
Positive rays are produced

By burning of gas

By cooling of the gas

By the bombardment of cathode rays on gas molecules

From anode like cathode rays produced from cathode

12.
Rutherfords planet like structure was defective and unsatisfactory because

Moving e- accelerate towards the nucleus

Continuous spectrum

Behavior of electron remain unexplained

All

13.
The relationship between energy of a photon of light and its frequency is given by

De-Broglie duel nature of matter

Bohrs model

Plancks Quantum theory

Rutherfords atomic model

14.
Splitting of spectral lines when atom is subjected to magnetic field is called

Zeemans effect

Starks effect

Photo electric effect

Compton effect

15.
The velocity of the photon

Is independent of wavelength

Depends upon source

Depends upon its frequency

Equals to the square of amplitude

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