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Question 27Asked in RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)

Which process is used to convert zinc carbonate ore into zinc oxide before reduction?

  1. AHeating strongly in limited air
  2. BHeating with aluminium powder
  3. CHeating with carbon powder
  4. DHeating strongly in excess air
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Correct answer: (A) Heating strongly in limited air

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 3 (4:30 PM)

This is question 27 of RRB JE CBT-1 PYQ 19 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.