Testwala logoTestwala
HomeMocksPracticePYQsDashboard
Testwala logoTestwala

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. Testwala is not affiliated with the Staff Selection Commission, IBPS, SBI, RBI, NABARD, SEBI or Indian Railways.

© 2026 Testwala. All rights reserved.

Built for aspirants, by aspirants.

HomeMocksPracticeStats
  1. Home
  2. ›
  3. PYQs
  4. ›
  5. BPSC (Bihar PCS)
  6. ›
  7. 2023
  8. ›
  9. Q48

BPSC (Bihar PCS) 2023 · Question 48 of 150

What is the 'fibre' used to make bulletproof jackets?

General Science

  1. AKevlarCorrect
  2. BNylon
  3. CTerylene
  4. DTweed

Answer: A. Kevlar

Explanation

Kevlar, a polymer of p-phenylenediamine and terephthalic acid with ten times the tensile strength of steel, is used in bulletproof jackets.

Source: 69th BPSC Prelims 2023 (Set B)

← Q47View full paper (150 questions)Q49 →

Practice the full BPSC (Bihar PCS) 2023 paper

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

Start test