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GS Paper IUPSC Prelims 2006
Health & Medicine
Question No. 432Interactive Test Mode
00:00
+2-0.66

Q432. Consider the following statements: 1. Caffeine, a constituent of tea and coffee is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascorbic acid is essential for formation of bones and teeth. 4. Citric acid is a good substitution for ascorbic acid in our nutrition. Which of the statements given above are correct?

Consider the following statements:

  1. Caffeine, a constituent of tea and coffee is a diuretic.
  2. Citric acid is used in soft drinks.
  3. Ascorbic acid is essential for formation of bones and teeth.
  4. Citric acid is a good substitution for ascorbic acid in our nutrition. Which of the statements given above are correct?
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 2006 • Science and Technology

Correct Answer: Option (B) — 1, 2 and 3 only

Concept & Option Breakdown

Standard Reference Verified

Statement 1 is correct: Caffeine acts as a diuretic by increasing renal blood flow and inhibiting sodium and water reabsorption in the kidneys. Statement 2 is correct: Citric acid is widely used as an acidulant, preservative, and flavoring agent in carbonated soft drinks. Statement 3 is correct: Ascorbic acid (Vitamin C) is indispensable for collagen hydroxylation, which forms the matrix essential for bones, teeth, and connective tissues. Statement 4 is incorrect: Citric acid cannot replace Vitamin C (ascorbic acid) metabolically; citric acid is an intermediate of cellular respiration (Krebs cycle) and lacks antiscorbutic and specific enzymatic co-factor roles of Vitamin C.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2006 (Q432)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — 1, 2 and 3 only

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Frequently Asked Questions — UPSC Prelims 2006 Q432

What is the official answer for UPSC Prelims 2006 GS Paper I Question 432 (Science and Technology)?

The official UPSC answer key for this 2006 Science and Technology (Health & Medicine) question is Option (B): "1, 2 and 3 only". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2006 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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