OPSC OAS 2020 PrelimsScience & TechnologyQuestion 11
Solved previous year question from the OPSC OAS/OCS 2020 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
Carbon monoxide is a poisonous gas because it:
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Answer & Explanation
Correct answer: (D) Binds to haemoglobin
- Carbon monoxide (CO) is a poisonous gas because it binds to haemoglobin in the blood, forming a stable compound called carboxyhaemoglobin (COHb). This prevents haemoglobin from carrying oxygen to the body’s tissues and organs, leading to oxygen deprivation and potentially death.
