Fission and Fusion NEET Questions

Physics - Atoms and Nuclei

Fission and Fusion MCQ Questions


1.
Nuclear fission is defined as:
A.
Splitting of a heavy nucleus into two or more lighter nuclei with release of energy
B.
Emission of a beta particle from the nucleus
C.
Combining of two light nuclei to form a heavier nucleus
D.
Emission of an alpha particle from the nucleus
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ANSWER :
A. Splitting of a heavy nucleus into two or more lighter nuclei with release of energy
2.
Nuclear fission was discovered by:
A.
Enrico Fermi (1934)
B.
Niels Bohr (1913)
C.
Rutherford and Marsden (1911)
D.
Otto Hahn and Fritz Strassmann (1939)
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ANSWER :
D. Otto Hahn and Fritz Strassmann (1939)
3.
The most commonly used isotope of uranium for nuclear fission in reactors is:
A.
²³⁴U
B.
²³⁵U
C.
²³⁸U
D.
²³⁹U
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ANSWER :
B. ²³⁵U
4.
A typical fission reaction of ²³⁵U is:
A.
²³⁵U + p → ²³⁶Np + γ
B.
²³⁵U + n → ²³⁶U + γ
C.
²³⁵U + n → ¹⁴¹Ba + ⁹²Kr + 3n + energy
D.
²³⁵U → ²³¹Th + ⁴He
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ANSWER :
C. ²³⁵U + n → ¹⁴¹Ba + ⁹²Kr + 3n + energy
5.
The energy released per fission of ²³⁵U is approximately:
A.
20 MeV
B.
2000 MeV
C.
2 MeV
D.
200 MeV
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ANSWER :
D. 200 MeV
6.
The energy released in fission comes mainly from:
A.
The increase in binding energy per nucleon of products compared to parent
B.
Loss of mass of neutrons
C.
Conversion of electrons to photons
D.
Heating of the fuel
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ANSWER :
A. The increase in binding energy per nucleon of products compared to parent