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GS Paper IUPSC Prelims 2006
Health & Medicine
Question No. 257Interactive Test Mode
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+2-0.66

Q257. In which one among the following is the speed of sound maximum?

In which one among the following is the speed of sound maximum?

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 2006 • Science and Technology

Correct Answer: Option (D) — Wood

Concept & Option Breakdown

Standard Reference Verified

The speed of sound depends on the elasticity and density of the medium, following the general rule: Solids > Liquids > Gases. In air, speed of sound is ~331–386 m/s; in water, ~1480 m/s; in solid wood, it reaches ~3300–4000 m/s due to high elasticity and molecular packing.

Elimination Heuristic & Exam Approach

Speed of sound is governed by elastic modulus: Solids > Liquids > Gases. Wood is the only solid among the options.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2006 (Q257)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — Wood

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Frequently Asked Questions — UPSC Prelims 2006 Q257

What is the official answer for UPSC Prelims 2006 GS Paper I Question 257 (Science and Technology)?

The official UPSC answer key for this 2006 Science and Technology (Health & Medicine) question is Option (D): "Wood". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2006 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?

Speed of sound is governed by elastic modulus: Solids > Liquids > Gases. Wood is the only solid among the options.

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