MCQs for Nuclei
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MCQs for Nuclei
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14 Questions

1. The radius of a spherical nucleus as measured by electron scattering is 3.6 fm. What is the mass number of the nucleus most likely to be?
2. An element A decays into an element C by a two step process A → B+ 2He4 and B → C + 2e–. Then,
3. The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an
4. In nuclear reaction, there is conservation of
5. Light energy emitted by star is due to
6. An electron emitted in beta radiation originates from
7. During negative β-decay, an antineutrino is also emitted along with the emitted electron. Then,
8. The half life of a radioactive susbtance is 30 days. What is the time taken to disintegrate to 3/4th of its original mass?
9. Complete the series 6He → e– + 6Li +
10. The equation 41 1H+ → 24He2+ + 2e– + 26 Me. represents
11. The mass number of iron nucleus is 56 the nuclear density is
12. Order of magnitude of density of uranium nucleus is
13. In nuclear reactors, the control rods are made of
14. Consider α and β particles and γ-rays each having an energy of 0.5 MeV. In the increasing order of penetrating power, the radiation are respectively

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