Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ]

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Solutions to CBSE Sample Paper - Science Class 10

Question 7 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10

Last updated at July 31, 2026 by

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

reaction-of-metals-with-oxygen.jpg

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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