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GS Paper IUPSC Prelims 2024
Health & Medicine
Question No. 62Interactive Test Mode
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Q62. Consider the following activities: 1. Identification of narcotics on passengers at airports or in aircraft 2. Monitoring of precipitation 3. Tracking the migration of animals In how many of the above activities can the radars be used?

Consider the following activities:

  1. Identification of narcotics on passengers at airports or in aircraft
  2. Monitoring of precipitation
  3. Tracking the migration of animals In how many of the above activities can the radars be used?
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 2024 • Science and Technology

Correct Answer: Option (B) — Only two

Concept & Option Breakdown

Standard Reference Verified
  • Statement 1 is incorrect: Radar detects physical presence, position, velocity, and macroscopic cross-sections of objects via radio wave reflection; it cannot perform chemical or spectroscopic identification of narcotics on passengers.
  • Statement 2 is correct: Doppler weather radars detect and track precipitation intensity, cloud movement, and storm systems.
  • Statement 3 is correct: Specialized avian and biological radar systems track migrating flocks of birds, bats, and insects.
Elimination Heuristic & Exam Approach

Radar detects macroscopic motion and physical reflectivity, not chemical composition. Differentiating narcotics from harmless organic compounds requires chemical scanners or sniffer dogs, making statement 1 false.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2024 (Q62)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — Only two

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Frequently Asked Questions — UPSC Prelims 2024 Q62

What is the official answer for UPSC Prelims 2024 GS Paper I Question 62 (Science and Technology)?

The official UPSC answer key for this 2024 Science and Technology (Health & Medicine) question is Option (B): "Only two". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2024 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?

Radar detects macroscopic motion and physical reflectivity, not chemical composition. Differentiating narcotics from harmless organic compounds requires chemical scanners or sniffer dogs, making statement 1 false.

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