Test

Quiz on Structure of the Atom

Multiple Choice Questions (MCQs)

1. Which sub-atomic particle was discovered first?

(a) Proton
(b) Neutron
(c) Electron
(d) Atom

2. Who proposed the Plum Pudding model of the atom?

(a) Dalton
(b) Rutherford
(c) J.J. Thomson
(d) Bohr

Assertion and Reason Questions

3. Assertion (A): Atoms are indivisible and cannot be broken down further.
Reason (R): The discovery of sub-atomic particles proved that atoms are not indivisible.

(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true, but R is false.
(d) A is false, but R is true.

Match the Following

4. Match the scientists with their discoveries:

(1) J.J. Thomson

(2) Rutherford

(3) Chadwick

(4) Bohr

(A) Discovered the neutron

(B) Proposed the planetary model

(C) Discovered the electron

(D) Proposed the concept of energy levels