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GS Paper IUPSC Prelims 2000
Health & Medicine
Question No. 354Interactive Test Mode
00:00
+2-0.66

Q354. Match List-I (Industrial process) with List-II (Industry with which associated) and select the correct answer using the codes given below the lists: | List-I | List-II | | :--- | :--- | | A. Cracking | 1. Rubber | | B. Smelting | 2. Petroleum | | C. Hydrogenation | 3. Copper | | D. Vulcanization | 4. Edible fats | Codes:

Match List-I (Industrial process) with List-II (Industry with which associated) and select the correct answer using the codes given below the lists:

List-IList-II
A. Cracking1. Rubber
B. Smelting2. Petroleum
C. Hydrogenation3. Copper
D. Vulcanization4. Edible fats

Codes:

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 2000 • Science and Technology

Correct Answer: Option (B) — A-2; B-3; C-4; D-1

Concept & Option Breakdown

Standard Reference Verified
  • Cracking is the thermal or catalytic breakdown of heavy hydrocarbon fractions in the Petroleum industry (A-2).
  • Smelting is the thermal reduction process used to extract metals like Copper from their ores (B-3).
  • Hydrogenation of vegetable oils is used in the manufacture of Edible fats / vanaspati (C-4).
  • Vulcanization is the cross-linking of Rubber polymers with sulfur (D-1).
Elimination Heuristic & Exam Approach

Vulcanization is exclusively associated with rubber (D-1), and hydrogenation with edible vegetable fats (C-4). This points uniquely to (b).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2000 (Q354)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — A-2; B-3; C-4; D-1

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Frequently Asked Questions — UPSC Prelims 2000 Q354

What is the official answer for UPSC Prelims 2000 GS Paper I Question 354 (Science and Technology)?

The official UPSC answer key for this 2000 Science and Technology (Health & Medicine) question is Option (B): "A-2; B-3; C-4; D-1". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2000 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?

Vulcanization is exclusively associated with rubber (D1), and hydrogenation with edible vegetable fats (C4). This points uniquely to (b).

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