Atom in Class 9 Science : Practice MCQ Questions & Answers with Explanations

2 practice sets · Page 1 of 1

1.

What is an atom?

A

The smallest particle of an element

B

A particle of a compound

C

A type of molecule

D

A part of a molecule

View Answer

Correct Answer: A — The smallest particle of an element

Explanation:

An atom is the smallest particle of an element that retains its chemical properties.

2.

What is the basic unit of matter?

A

Proton

B

Molecule

C

Atom

D

Neutron

View Answer

Correct Answer: C — Atom

Explanation:

The atom is the basic unit of matter.