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Nuclear Physics — Science Questions & Practice

Practise 7 Nuclear Physics questions from Science for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Nuclear Physics — with answers

Try each question first, then open the answer. Explanations are included.

1. Which nuclear process powers the Sun and other stars?

ANuclear Fusion
BRadioactive Decay alone
CChemical Combustion
DNuclear Fission

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Answer: A

The correct answer is 'Nuclear Fusion'.

2. Which nuclear process is used in most nuclear power plants on Earth to generate electricity?

ANuclear Fusion
BRadioactive Decay alone
CNuclear Fission
DChemical Combustion

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Answer: C

The correct answer is 'Nuclear Fission'.

3. What is 'Radioactivity'?

AA chemical reaction between elements
BThe spontaneous emission of radiation from unstable atomic nuclei
CThe combining of two nuclei only
DThe splitting of a nucleus under external force only

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Answer: B

The correct answer is 'The spontaneous emission of radiation from unstable atomic nuclei'.

4. Who discovered radioactivity?

AHenri Becquerel
BMarie Curie
CWilhelm Rontgen
DErnest Rutherford

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Answer: A

The correct answer is 'Henri Becquerel'.

5. Which type of radioactive radiation has the highest penetrating power?

ANone, all have equal penetrating power
BAlpha radiation
CGamma radiation
DBeta radiation

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Answer: C

The correct answer is 'Gamma radiation'.

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