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Railways PYQCBT 1 2016

RRB NTPC · Question 41

An Assertion and a Reason are given below. Assertion: Water is essential for life. Reason: It is formed using three parts of Hydrogen and one part of Oxygen. 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. D

  2. A

  3. B

  4. C

Show answer & explanation

Answer: (A) D

Explanation

Water is essential for life, so the assertion is true. But a water molecule (H₂O) has two hydrogen atoms and one oxygen atom, not three hydrogen, so the reason is false.