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GS Paper IUPSC Prelims 2000
Health & Medicine
Question No. 332Interactive Test Mode
00:00
+2-0.66

Q332. Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of:

Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of:

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) — aluminium oxide

Concept & Option Breakdown

Standard Reference Verified

Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. For aluminium, anodization creates a thick, durable, and corrosion-resistant layer of aluminium oxide ($\text{Al}_2\text{O}_3$).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2000 (Q332)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — aluminium oxide

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Frequently Asked Questions — UPSC Prelims 2000 Q332

What is the official answer for UPSC Prelims 2000 GS Paper I Question 332 (Science and Technology)?

The official UPSC answer key for this 2000 Science and Technology (Health & Medicine) question is Option (B): "aluminium oxide". 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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