PYQPulse
HomeMocksPracticePYQsDashboard
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. BPSC (Bihar PCS)
  6. ›
  7. 2022
  8. ›
  9. Q120

BPSC (Bihar PCS) 2022 · Question 120 of 150

The working principle of a washing machine is

General Science

  1. Adiffusion
  2. BcentrifugationCorrect
  3. Cdialysis
  4. Dreverse osmosis
  5. ENone of the above/More than one of the above

Answer: B. centrifugation

Explanation

Washing machines spin-dry clothes using centrifugation.

Source: 67th BPSC Prelims Re-Exam 2022 (Set D)

← Q119View full paper (150 questions)Q121 →

Practice the full BPSC (Bihar PCS) 2022 paper

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

Start test