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Question 14Asked in RRB JE CBT-1, 16 Dec 2024, Shift 2 (12:45 PM)

What is formed when ammonium dichromate is heated?

  1. ANitrogen, oxygen and chromium oxide
  2. BChromium oxide and water
  3. CChromium and oxygen
  4. DChromium oxide and nitrogen
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Correct answer: (A) Nitrogen, oxygen and chromium oxide

Explanation

Official answer key: (1) Nitrogen, oxygen and chromium oxide Correct answer should be (4) Chromium oxide and nitrogen. (NH₄)₂Cr₂O₇ → Cr₂O₃ + N₂ + 4H₂O. No oxygen gas is released. Scoring follows the official key.

From RRB JE CBT-1 PYQ 16 Dec 2024, Shift 2 (12:45 PM)

This is question 14 of RRB JE CBT-1 PYQ 16 Dec 2024, Shift 2 (12:45 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.