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GS Paper IUPSC Prelims 2007
Health & Medicine
Question No. 318Interactive Test Mode
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Q318. Which one among the following is called philosopher’s wool?

Which one among the following is called philosopher’s wool?

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 2007 • Science and Technology

Correct Answer: Option (C) — Zinc oxide

Concept & Option Breakdown

Standard Reference Verified

Zinc oxide (ZnO) is historically known as 'philosopher's wool' (or lana philosophica) because when zinc is burned in air, the resulting oxide forms white, light, wool-like tufts.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2007 (Q318)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — Zinc oxide

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Frequently Asked Questions — UPSC Prelims 2007 Q318

What is the official answer for UPSC Prelims 2007 GS Paper I Question 318 (Science and Technology)?

The official UPSC answer key for this 2007 Science and Technology (Health & Medicine) question is Option (C): "Zinc oxide". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2007 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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