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. HPSC HCS
  6. ›
  7. 2021
  8. ›
  9. Q71

HPSC HCS 2021 · Question 71 of 177

Which of the following statements are true about washing soda? 1. Its chemical name is sodium hydrogen carbonate and its aqueous solution is basic in nature. 2. Its chemical name is sodium carbonate and the pH of its aqueous solution is more than 7. 3. It is used for raising of cakes while baking. 4. It is used for the removal of permanent hardness of water. Select the correct answer using the code given below:

Chemistry

  1. A2 and 3 only
  2. B2 and 4 onlyCorrect
  3. C1 and 3 only
  4. D2,3 and 4 only

Answer: B. 2 and 4 only

Explanation

Washing soda is sodium carbonate with a basic aqueous solution (pH>7) and removes permanent water hardness; baking uses baking soda, not washing soda.

Source: HPSC HCS (Ex.Br.) Prelims Paper-I (General Studies) held 12-Sep-2021 (exampyq/doorsteptutor compilation); answers per official HPSC answer key

← Q70View full paper (177 questions)Q72 →

Practice the full HPSC HCS 2021 paper

Timed test with all 177 questions, just like the real exam.

Start test