Atomic Structure test 1

A test from chapter 5 i.e Atomic Structure of Chemistry part 1. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.

1. The uncertainty principle was stated by

A) de Broglie
B) Heisenberg
C) Einstein
D) Schrodinger

2. When a pressure in a discharge tube is reduced, which of the following phenomenon becomes very prominent

A) gas conducts electricity
B) a discharge takes place
C) gas ionizes
D) gas glows

3. Atom bomb is based on the principle of

A) nuclear fusion
B) nuclear fission
C) fusion and fission both
D) radioactivity

4. A spinning electron creates

A) magnetic field
B) electric field
C) quantum field
D) none

5. The volume of space in which there is 95% chance of finding an electron is

A) orbit
B) atomic orbital
C) degenerate orbital
D) quantized orbital

6. Planck’s equation is

A) E=mc^2
B) E=hv
C) E=hv^2
D) E=mc

7. In an atom, the electrons

A) are stationary in various energy levels
B) are distributed in three dimensional charge cloud around the nucleus
C) embedded in space around the nucleus
D) revolve around the nucleus at random

8. The mass number of an element is equal to

A) number of electrons in an atom
B) number of protons and neutrons in the nucleus
C) number of protons in the nucleus
D) number of neutrons in the nucleus

9. The energy of bounded electron in H atom is

A) positive
B) negative
C) zero
D) none

10. Quantum number which has symbol “n” is called

A) principal quantum
B) Azimuthal quantum
C) spin uantum
D) magnetic quantum