NEET Physics is the scoring paper in the medical entrance examination. Here, you will discover the NEET Physics MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Physics objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Physics Radioactivity Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.
MCQs on Radioactivity
1. The neutral atoms of all isotopes of the same element contain the same number of __________.
(a) neutrons only.
(b) Electrons
(c) Mass numbers
(d) Masses
Answer
Answer: (b) Electrons
2. The atomic number is not changed by which type of radioactive decay?
(a) Beta
(b) Gamma
(c) Alpha
(d) The atomic number is affected by all forms of radioactive decay
Answer
Answer: (b) Gamma
3. Isotopes of an element have a different number of
(a) Proton
(b) Neutron
(c) Electron
(d) atom
Answer
Answer: (b) Neutron
4. Three types of radioactive elements are emitted when unstable nuclei undergo radioactive decay. Which of the following is not one of them
(a) Beta
(b) Gamma
(c) Alpha
(d) delta
Answer
Answer: (d) delta
5. A nuclear fission reaction becoming self-sustaining depends on
(a) electrons
(b) Neutrons
(c) Energy
(d) Protons
Answer
Answer: (b) Neutrons
6. Helium nuclei particles are called
(a) Gamma particles
(b) Beta particles
(c) Alpha particles
(d) No particles that are helium nuclei
Answer
Answer: (c) alpha particles
7. When two atomic nuclei combine it is called as
(a) Chain reaction
(b) Nuclear fusion
(c) Nuclear decay
(d) Nuclear fission
Answer
Answer: (b) Nuclear fusion
8. The number of protons or atomic number is reduced to 2 by which form of radioactive decay?
(a) Beta-decay
(b) Gamma decay
(c) Alpha decay
(d) None of the above
Answer
Answer: (c) Alpha decay
9. Which statement is true for all three types of radioactive emission?
(a) They are deflected by electric fields
(b) They ionise gases
(c) They are completely absorbed by a thin aluminium sheet
(d) They emit light
Answer
Answer: (b) They ionise gases
10. A nuclide of the element plutonium 94 Pu 242. What is the number of neutrons in its nucleus?
(a) 242
(b) 336
(c) 148
(d) 94
Answer
Answer: (c) 148