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Question 15Asked in RRB JE CBT-1, 25 Feb 2026, Shift 3 (4:30 PM)

Why are brackets used in the formula Ca(OH)₂?

  1. ATo show ionic nature
  2. BTo balance oxygen atoms
  3. CTo indicate two hydroxide groups
  4. DTo represent molecular bonding
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Correct answer: (C) To indicate two hydroxide groups

From RRB JE CBT-1 PYQ 25 Feb 2026, Shift 3 (4:30 PM)

This is question 15 of RRB JE CBT-1 PYQ 25 Feb 2026, Shift 3 (4:30 PM). 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.