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Question

Which of the following is NOT a feature of a physical change?


  1. It is reversible

  2. It is temporary

  3. No new substance is formed

  4. The composition of the substance changes


Solution

The correct option is D

The composition of the substance changes


A physical change involves only changes in the physical properties of the substance which may be temporary or permanent. In a chemical change, the composition of a substance changes to form a new substance which is not a feature of physical change. 
 

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