What would be the result of heating zinc powder with calcium oxide?

Dear student
Please find the solution to the asked query:

In the electrochemical series,

Zinc lies below Calcium. Hence it is less reactive than Calcium and thus it is  not able to undergo any displacement reaction when heated with Calcium oxide.

Zn + CaO   No reaction.

However, when Calcium is reacted with Zinc oxide , it will displace Zinc from its oxide  and form Calcium oxide and Zn 
Ca + ZnO    CaO + Zn

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