Railways PYQCBT 1 2016

RRB NTPC · Question 100

An assertion and a reason are given below. Assertion: The phenomenon of nuclear fission generates great energy. Reason: The process in which a nucleus is broken into two parts is called nuclear fission. Choose the answer. A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion. B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. C. Both Assertion and Reason are false. D. Assertion is true but Reason is false.

  1. A

  2. D

  3. B

  4. C

Show answer & explanation

Answer: (C) B

Explanation

Nuclear fission does release huge energy, and splitting a heavy nucleus into two parts is the definition of fission, so both are true. But the definition does not explain why energy is released; that comes from the mass defect converted to energy by E = mc². So R is not the explanation of A.