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CBSE
Class 9
Science
Exploration
Journey Inside the Atom
Question Bank

Which scientific advancement p...

Single Answer MCQ
Q-00172069

Which scientific advancement prompted the recognition that atoms are not indivisible?

1

The quantum theory

2

Discovery of radioactivity

3

The atomic bomb

4

Nuclear fission

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Q1.

Who proposed the idea of indivisible particles called 'parmanus'?

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Q2.

What was the term used by Democritus to refer to indivisible particles?

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Q3.

Which scientist's atomic theory was based on experimental observations?

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Q4.

What significant particle did J.J. Thomson discover?

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