PYQPulse
HomeMocksPracticePYQsUpdatesDashboard
PYQPulse

Timing-accurate mock tests and PYQs for SSC, Banking and Railway exams — so the real paper feels like a revision.

Exams

  • SSC exams
  • Banking exams
  • Railway exams
  • All exams

Practice

  • Practice questions
  • Mock test series
  • Sectional tests
  • Year-wise PYQs
  • Performance analytics

Company

  • About us
  • Help Centre
  • Pricing
  • Sign in

Legal

  • Privacy Policy
  • Terms of Service

Contact

  • hello@testwala.co.in
  • Telegram
  • +91 62816 87760

Practice interface modeled on the official exam pattern — not the official examination. PYQPulse is not affiliated with the Staff Selection Commission, IBPS, SBI, RBI, NABARD, SEBI or Indian Railways.

© 2026 PYQPulse. All rights reserved.

Built for aspirants, by aspirants.

HomeMocksPracticeStats
  1. Home
  2. ›
  3. PYQs
  4. ›
  5. UPPSC PCS
  6. ›
  7. 2025
  8. ›
  9. Q16

UPPSC PCS 2025 · Question 16 of 150

Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A): Generally, an alloy of lead and tin is used as a material of the fuse wire. Reason (R): Alloy of lead and tin has a higher melting point than copper and aluminium. Select the correct answer from the code given below: Code:

General Knowledge

  1. ABoth (A) and (R) are true and (R) is the correct explanation of (A)
  2. B(A) is false, but (R) is true
  3. CBoth (A) and (R) are true, but (R) is not the correct explanation of (A)
  4. D(A) is true, but (R) is falseCorrect

Answer: D. (A) is true, but (R) is false

Explanation

Assertion (A) is true: Fuse wires are made from alloys of lead and tin (sometimes with a small proportion of bismuth or zinc) because these materials have low melting points and high resistivity . When excessive current flows, the wire melts quickly and breaks the circuit, preventing damage to electrical appliances.

Source: selfstudywala.com UPPCS Prelims 2025 GS Paper 1 detailed solution (based on UPPCS official answer key)

← Q15View full paper (150 questions)Q17 →

Practice the full UPPSC PCS 2025 paper

Timed test with all 150 questions, just like the real exam.

Start test