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. RRB Group D (Level-1 posts)
  6. ›
  7. 2022
  8. ›
  9. Q298

RRB Group D (Level-1 posts) 2022 · Question 298 of 598

What is the need to balance chemical equations?

  1. ATo indicate the ratio of masses of reactants and products in which they react.
  2. BTo indicate the ratio of volumes of reactants and products in which they react.
  3. CTo satisfy the law of conservation of mass.Correct
  4. DTo satisfy the law of constant proportions.

Answer: C. To satisfy the law of conservation of mass.

Explanation

Balancing chemical equations is necessary to satisfy the law of conservation of mass, which states that matter is neither created nor destroyed.

Source: RRB Group D 2022 Prev. Yr. Paper (17 Aug 2022) (Shift 3) - Prepp · reliable-secondary

← Q297View full paper (598 questions)Q299 →

Practice the full RRB Group D (Level-1 posts) 2022 paper

Timed test with all 598 questions, just like the real exam.

Start test