Question

In a physical change, which of the following takes place?
(i) No new substance is formed.
(ii) The change is permanent.
(iii) The change is temporary.
(iv) Change in size, shape or appearance.

• A. Only (i) and (iii)
• B. Only (iii) and (iv)
• C. Only (i) and (iv)
• D. (i), (iii) and (iv)

Answer 1

The correct option is C

Only (i) and (iv)

In a physical change, no new substance is formed and the chemical composition of substance remains the same. There are changes in physical properties like shape, size, appearance, etc. It can either be temporary or permanent.

For example, cutting of paper:- In this, no new substance is formed as the paper is cut into smaller pieces and these cannot be reverted to the original state. Hence this physical change is a permanent one.

Melting of ice:- In this, no new substance is formed and only the state of ice is changed from solid to liquid. Moreover, this change is temporary as the original state of the ice can be reattained on cooling.