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Question 85Asked in RRB JE CBT-1, 25 Feb 2026, Shift 3 (4:30 PM)

Why are metals such as sodium and calcium extracted by electrolytic reduction instead

Why are metals such as sodium and calcium extracted by electrolytic reduction instead of heating with carbon?
  1. AThey decompose when heated with carbon
  2. BThey have greater affinity for oxygen than carbon
  3. CThey exist only as molten chlorides in nature
  4. DThey form unstable oxides at high temperature
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Correct answer: (B) They have greater affinity for oxygen than carbon

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

This is question 85 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.