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Question 66Asked in RRB JE CBT-1, 19 Feb 2026, Shift 1 (9:00 AM)

Which of the following statements about washing soda is CORRECT?

  1. AWashing soda is chemically sodium carbonate decahydrate (Na2CO3·10H2O)
  2. BIt is obtained by heating sodium bicarbonate to 100°C
  3. CIt does not remove permanent hardness of water
  4. DWashing soda is acidic in nature
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Correct answer: (A) Washing soda is chemically sodium carbonate decahydrate (Na2CO3·10H2O)

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 1 (9:00 AM)

This is question 66 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.