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Question

Zinc oxide reacts with charcoal to form:

A
zinc and hydrogen
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B
zinc and carbon dioxide
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C
zinc and water
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D
zinc and carbon monoxide
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Solution

The correct option is D zinc and carbon monoxide
ZnO + C Δ Zn +CO
Charcoal can be used as a reducing agent in extraction of metals. Charcoal is almost entirely made of carbon. When heated with carbon, metal oxides are reduced to form pure metal along with oxides of carbon.

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