Railways PYQCBT 1 2016

RRB NTPC · Question 80

An Assertion (A) and a Reason (R) are given below. Assertion (A): Red color of blood is due to hemoglobin. Reason (R): Hemoglobin is a red pigment. Choose the correct option. A. Both A and R are true and R is the correct explanation of A. B. Both A and R are true but R is not the correct explanation of A. C. A is true but R is false. D. Both A and R are false.

  1. B

  2. C

  3. A

  4. D

Show answer & explanation

Answer: (C) A

Explanation

Haemoglobin, the oxygen-carrying protein in red blood cells, is a red pigment, and that is why blood is red. Both are true and R explains A.