set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following is not a subatomic particle?

a) Proton

b) Deuteron

c) Neutron

d) Electron

Question : 2

In an atom, the order of filling up of the orbitals is governed by

a) Heisenberg’s uncertainty principle

b) Hund’s rule

c) Aufbau’s principle

d) Pauli’s exclusion principle

Question : 3

The atomic weights are expressed in terms of atomic mass unit. Which one of the following is used as a standard?

a) ¹⁶O₈

b) ¹²C₆

c) ¹H₁

d) ³⁵Cl₁₇

Question : 4

One gram of which of the following contains largest number of oxygen atoms?

a) O₂

b) O₃

c) O

d) All contains same

Question : 5

Protons and neutrons are bound in a nucleus by the

a) long range ‘electromagnetic interaction’

b) short range ‘strong interaction’

c) short range ‘weak interaction’

d) long range ‘gravitational interaction’

Question : 6

Which of the following statement about molecular structure is correct?

a) Electron and proton are inside the nucleus and neutron revolve around the nucleus

b) Proton and neutron are inside the nucleus and electrons revolve around the nucleus

c) Neutron and electron are found inside the nucleus and protons revolves around the nucleus

d) Proton, neutron and electron all are inside the nucleus