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GS Paper IUPSC Prelims 1999
Health & Medicine
Question No. 251Interactive Test Mode
00:00
+2-0.66

Q251. Low temperatures (cryogenics) find application in:

Low temperatures (cryogenics) find application in:

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 1999 • Science and Technology

Correct Answer: Option (A) — space travel, surgery and magnetic levitation

Concept & Option Breakdown

Standard Reference Verified

Cryogenics (the science of producing and studying phenomena at extremely low temperatures, usually below -150°C) is widely applied in:

  1. Space travel: Liquid hydrogen and liquid oxygen are used as cryogenic propellants in rockets.
  2. Surgery: Cryosurgery uses extreme cold to destroy abnormal or diseased tissues.
  3. Magnetic Levitation: Cooling superconducting magnets enables frictionless transport (Maglev trains). Telemetry does not inherently require cryogenic temperatures.
Elimination Heuristic & Exam Approach

Eliminate options containing 'telemetry' (remote data collection/transmission, which does not require cryogenic temperatures) to arrive directly at (a).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1999 (Q251)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — space travel, surgery and magnetic levitation

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Frequently Asked Questions — UPSC Prelims 1999 Q251

What is the official answer for UPSC Prelims 1999 GS Paper I Question 251 (Science and Technology)?

The official UPSC answer key for this 1999 Science and Technology (Health & Medicine) question is Option (A): "space travel, surgery and magnetic levitation". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1999 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?

Eliminate options containing 'telemetry' (remote data collection/transmission, which does not require cryogenic temperatures) to arrive directly at (a).

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