Which of the following is/are characteristic of physical change?

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A small amount of energy change is involved.

These are reversible in nature.

No new substance formed.

All of the above

answer is D.

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Detailed Solution

Characteristics of physical change are:A small amount of energy change is involved, These are reversible in nature, No new substance formed, Change takes place only in the physical properties of the substance.
Physical changes are those which don't involve the change in the chemical composition of a substance. Physical changes are changes in which no new substance is formed and only physical properties change. They may or may not be reversible. The powdering of sugar is a physical change. The sugars in the crystal form are grinded into powder form. There are only structural changes in the form of sugar and no new substances are formed. Both crystal and powder form are of sugar only.

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