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GS Paper IUPSC Prelims 2000
Health & Medicine
Question No. 330Interactive Test Mode
00:00
+2-0.66

Q330. Match List-I with List-II and select the correct answer using the codes given below the lists: | List-I | List-II | | :--- | :--- | | A. German silver | 1. Tin | | B. Solder | 2. Nickel | | C. Bleaching powder | 3. Sodium | | D. Hypo | 4. Chlorine | Codes:

Match List-I with List-II and select the correct answer using the codes given below the lists:

List-IList-II
A. German silver1. Tin
B. Solder2. Nickel
C. Bleaching powder3. Sodium
D. Hypo4. Chlorine

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 (D) — A-2; B-1; C-4; D-3

Concept & Option Breakdown

Standard Reference Verified
  • German silver is an alloy of Copper, Zinc, and Nickel (A matches 2).
  • Solder is an alloy of Lead and Tin (B matches 1).
  • Bleaching powder is $\text{CaOCl}_2$, containing Chlorine as an active agent (C matches 4).
  • Hypo is sodium thiosulfate ($\text{Na}_2\text{S}_2\text{O}_3$), containing Sodium (D matches 3). Therefore, the correct code is A-2; B-1; C-4; D-3.
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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2000 (Q330)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — A-2; B-1; C-4; D-3

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Frequently Asked Questions — UPSC Prelims 2000 Q330

What is the official answer for UPSC Prelims 2000 GS Paper I Question 330 (Science and Technology)?

The official UPSC answer key for this 2000 Science and Technology (Health & Medicine) question is Option (D): "A-2; B-1; C-4; D-3". 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?

To solve Health & Medicine questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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