O-LevelChemistryMetals & Reactivity5070/12 · May/June 2019 · Q301 Mark
Metal M is displaced from aqueous M nitrate by copper. Which statement about metal M and its compounds is correct?
AM carbonate is stable when heated.
BM oxide is reduced to M by heating with carbon.
CM reacts with dilute hydrochloric acid to give hydrogen.
DM reduces zinc oxide to zinc on heating.
✓ Correct answer
B: M oxide is reduced to M by heating with carbon.
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