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GS Paper IUPSC Prelims 1996
Health & Medicine
Question No. 363Interactive Test Mode
00:00
+2-0.66

Q363. The offending substance in the liquor tragedies leading to blindness etc. is:

The offending substance in the liquor tragedies leading to blindness etc. is:

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 1996 • Science and Technology

Correct Answer: Option (D) — methyl alcohol

Concept & Option Breakdown

Standard Reference Verified

Methyl alcohol (methanol / wood spirit) is the toxic adulterant in spurious liquor tragedies. In the human body, alcohol dehydrogenase converts methanol to formaldehyde and formic acid, which causes metabolic acidosis, severe retinal and optic nerve damage leading to permanent blindness, and death.

Elimination Heuristic & Exam Approach

Methanol ($CH_3OH$) ingestion metabolizes to toxic formic acid, which specifically damages the optic nerve, causing blindness.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1996 (Q363)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — methyl alcohol

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Frequently Asked Questions — UPSC Prelims 1996 Q363

What is the official answer for UPSC Prelims 1996 GS Paper I Question 363 (Science and Technology)?

The official UPSC answer key for this 1996 Science and Technology (Health & Medicine) question is Option (D): "methyl alcohol". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1996 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?

Methanol ($CH3OH$) ingestion metabolizes to toxic formic acid, which specifically damages the optic nerve, causing blindness.

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