UGC NET CSE | October 2020 | Part 1 | Question: 40

Question

Given below are two statements: One is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$

$\begin{array}{lll} \text{Assertion (A)} & : & \text{Carbon monoxide (CO) is a serious asphyxiant; even a short exposure} \\ && \text{may have fatal health issues.} \\ \text{Reason (R)} & : & \text{Hemoglobin present in the blood has greater affinity towards} \\ && \text{carbon monoxide than oxygen} \end{array}$

In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both $(A)$ and $(R)$ are correct and $(R)$ is the correct explanation of $(A)$
• B. Both $(A)$ and $(R)$ are correct but  $(R)$ is NOT the correct explanation of $(A)$
• C. $(A)$ is correct but $(R)$ is not correct
• D. $(A)$ is not correct but $(R)$ is correct

Answer 1

Option A is correct

Carbon monoxide (CO )is a chemical asphyxiant which means that it reduces the blood's ability to carry oxygen. Asphyxiation, or suffocation, occurs when the blood does not deliver enough oxygen to the body. CO gas is absorbed through the lungs into the bloodstream.

Carbon monoxide has 210 times greater affinity for haemoglobin than oxygen