Q. Metallic oxides of zinc, magnesium and copper were heated with the Zinc, Magnesium, and Copper separately. In which cases will you find displacement reactions taking place?

When metallic oxides of zinc, magnesium, and copper are heated with zinc, magnesium, and copper separately, displacement reactions will take place based on the reactivity of the metals:

Magnesium Oxide (MgO): No reaction with zinc or copper because magnesium is more reactive.
Zinc Oxide (ZnO): No reaction with magnesium or copper because zinc is less reactive than magnesium but more reactive than copper.

Copper Oxide (CuO): Displacement reactions occur with both magnesium and zinc because copper is less reactive than both.

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