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Question 11Asked in RRB JE CBT-1, 16 Dec 2024, Shift 1 (9:00 AM)

On oxidation, silver changes its colour to _______ and copper changes its colour to _______.

  1. Agrey; green
  2. Bblack; green
  3. Cblack; blue
  4. Dgrey; blue
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Correct answer: (B) black; green

From RRB JE CBT-1 PYQ 16 Dec 2024, Shift 1 (9:00 AM)

This is question 11 of RRB JE CBT-1 PYQ 16 Dec 2024, Shift 1 (9:00 AM). 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.