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Chemistry · May / June 2019 · Paper 12 · Question 30

5070Reactivity series

Metal M is displaced from aqueous M nitrate by copper. Which statement about metal M and its compounds is correct?

  1. AM carbonate is stable when heated.
  2. BM oxide is reduced to M by heating with carbon.
  3. CM reacts with dilute hydrochloric acid to give hydrogen.
  4. DM reduces zinc oxide to zinc on heating.

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Correct answer: B. M oxide is reduced to M by heating with carbon.

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