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Question 7Asked in RRB JE CBT-1, 25 Feb 2026, Shift 3 (4:30 PM)

Why are sulphide ores usually converted into oxides before the extraction of metals?

  1. AMetal sulphides react faster with carbon
  2. BSulphide ores are unstable at room temperature
  3. CSulphide ores contain more gangue materials
  4. DMetal oxides are easier to reduce than sulphides
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Correct answer: (D) Metal oxides are easier to reduce than sulphides

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

This is question 7 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.