The chemical reaction between copper and oxygen can be categorized as: 

(A) Displacement reaction 

(B) Decomposition reaction 

(C) Combination reaction 

(D) Double displacement reaction 

Answer - 

The reaction of metals with oxygen makes Metal Oxide

For example, here


Since Oxygen and Copper combine to form Copper Oxide. Therefore, this is a combination reaction.

So, the correct answer is (c)


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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo