Multiple choice

Directions: In the question given below, there are two statements labeled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: Assertion: CO and NO both combine with haemoglobin. Reason: Both have equal affinity for haemoglobin.

  1. Both A and R are true and R is the correct explanation of A.

  2. Both A and R are true but R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.

  5. Both A and R are false.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because CO and NO both combine with haemoglobin, but NO has greater affinity for haemoglobin than CO and it is unable to enter the blood from atmosphere.

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