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GS Paper IUPSC Prelims 2010
Health & Medicine
Question No. 365Interactive Test Mode
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+2-0.66

Q365. Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition?

Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition?

Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2010 • Science and Technology

Correct Answer: Option (B) — The inhaled CO has much higher affinity for haemoglobin as compared to oxygen.

Concept & Option Breakdown

Standard Reference Verified

Carbon monoxide binds to hemoglobin with an affinity approximately 200 to 250 times greater than oxygen, forming carboxyhemoglobin (COHb). This preferential binding blocks oxygen transport and impairs oxygen release to tissues, causing systemic hypoxia (carbon monoxide poisoning).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2010 (Q365)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — The inhaled CO has much higher affinity for haemoglobin as compared to oxygen.

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Frequently Asked Questions — UPSC Prelims 2010 Q365

What is the official answer for UPSC Prelims 2010 GS Paper I Question 365 (Science and Technology)?

The official UPSC answer key for this 2010 Science and Technology (Health & Medicine) question is Option (B): "The inhaled CO has much higher affinity for haemoglobin as compared to oxygen.". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2010 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

To solve Health & Medicine questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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