Two changes are stated below:
(i) a piece of iron becomes red when heated strongly.
(ii) a piece of paper gives bright yellow flame when heated strongly.
Which of the above changes is a physical change?

Options

A. (i) only
B. (ii) only
C. Both (i) and (ii)
D. Neither (i) nor (ii)

Answer

A

Explanation

When a piece of paper is heated it burns to give yellow flame which is a chemical change. Iron becomes red hot on heating which is a physical change only.