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Physical Chemistry -- Nuclear Chemistry
1.
In radioactive decay, the emitted electrons come from the
- A.innermost shell of the atom
- B.K shell of an atom
- C.outermost shell of the atom
- D.decay of neutrons in the nucleus
- Answer
- Report
Answer : [D]
2.
Which of the following nuclei are β+ -emitters?
- A.Antinutrino
- B.Potassium-40
- C.Radon-222
- D.Chlorine-34
- Answer
- Report
Answer : [B]
3.
Which of the following radioactive elements are soluble in water?
- A.Radium
- B.Radon
- C.Technetium
- D.Tritium
- Answer
- Report
Answer : [B]
4.
The nucleus of an electrically neutral atom undergoes radioactive decay.
It will remain neutral after the decay if the process is a
- A.β- -decay
- B.β+ -decay
- C.γ-decay
- D.neutron decay
- Answer
- Report
Answer : [C]
5.
A radioactive nuclide emits γ-rays due to the
- A.emission of an electron from its orbital
- B.nuclear transition from a higher state to a lower state
- C.presence of more neutrons than protons
- D.presence of less neutrons than protons
- Answer
- Report
Answer : [B]
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