| (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. |
A)
(i) (ii) (iii) (iv) Physical Physical Chemical Chemical
B)
(i) (ii) (iii) (iv) Physical Chemical Physical Chemical
C)
(i) (ii) (iii) (iv) Chemical Chemical Physical Physical
D)
(i) (ii) (iii) (iv) Physical Chemical Chemical Physical
Correct Answer: C
Solution :
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 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, rusting of iron, cooking of food, etc.
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