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The principle behind the extraction of copper from its oxide involves the difference in:

 

Option: 1

Density of copper and copper oxide


Option: 2

Melting points of copper and copper oxide


Option: 3

Solubility of copper and copper oxide


Option: 4

Reactivity of copper and copper oxide


Answers (1)

best_answer

Copper oxide has a higher melting point, so it can be reduced to copper metal at high temperatures.

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