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GS Paper IUPSC Prelims 2006
Health & Medicine
Question No. 320Interactive Test Mode
00:00
+2-0.66

Q320. Which are the materials generally employed as solder in soldering operations in electronics?

Which are the materials generally employed as solder in soldering operations in electronics?

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) — Lead and tin

Concept & Option Breakdown

Standard Reference Verified

Traditional electronic solder is an alloy composed primarily of tin (Sn) and lead (Pb), commonly in a eutectic ratio of 63% Sn / 37% Pb (or 60/40), chosen for its low melting point, excellent wetting capabilities, and reliable electrical conductivity.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2006 (Q320)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — Lead and tin

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Frequently Asked Questions — UPSC Prelims 2006 Q320

What is the official answer for UPSC Prelims 2006 GS Paper I Question 320 (Science and Technology)?

The official UPSC answer key for this 2006 Science and Technology (Health & Medicine) question is Option (B): "Lead and tin". 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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