Few changes are given below. Mark the correct option from the given codes.
(i) Milk is set to form curd. (ii) Batter is steamed to form idlis. (iii) Water is boiled to form steam. (iv) Salt is dissolved in water to form solution.

Answer

C

Explanation

A change in which a substance undergoes a change in its physical properties is called a physical change. It is generally reversible and in such a change, no new substance is formed. For example, boiling of water, dissolving of salt in water, melting of an ice cube. A change in which one or more new substances are formed by means of a chemical reaction is called a chemical change. It is generally irreversible. For example, setting of milk into curd, making idlis from batter, rusting of iron, cooking of food, etc.