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GS Paper IUPSC Prelims 1999
Health & Medicine
Question No. 268Interactive Test Mode
00:00
+2-0.66

Q268. Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the lists: | List-I | List-II | | :--- | :--- | | A. High speed | 1. Mach | | B. Wavelength | 2. Angstrom | | C. Pressure | 3. Pascal | | D. Energy | 4. Joule |

Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the lists:

List-IList-II
A. High speed1. Mach
B. Wavelength2. Angstrom
C. Pressure3. Pascal
D. Energy4. Joule
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 (C) — A-1, B-2, C-3, D-4

Concept & Option Breakdown

Standard Reference Verified
  • High speed is measured in Mach number (ratio of speed to speed of sound).
  • Wavelength of light is expressed in Angstroms (1 Å = 10^-10 m).
  • Pressure is measured in Pascals (1 Pa = 1 N/m²).
  • Energy is measured in Joules (J).
Elimination Heuristic & Exam Approach

Direct 1-to-1 matching: A-1, B-2, C-3, D-4 immediately gives option (c).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1999 (Q268)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — A-1, B-2, C-3, D-4

Related & Repeated Prelims PYQs (2)

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2001 • Q30682% Match

Match List I with List II and select the correct answer using the codes given below the lists: | List-I (Characteristic) | List-II (Particle) | | :--- | :--- |

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1996 • Q51480% Match

Match List-I with List-II and select the correct answer by using the codes given below: | List- I | List-II | | :--- | :--- | | A. Vitamin | 1. Pepsin | | B. E

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Frequently Asked Questions — UPSC Prelims 1999 Q268

What is the official answer for UPSC Prelims 1999 GS Paper I Question 268 (Science and Technology)?

The official UPSC answer key for this 1999 Science and Technology (Health & Medicine) question is Option (C): "A-1, B-2, C-3, D-4". 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?

Direct 1to1 matching: A1, B2, C3, D4 immediately gives option (c).

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