Question

Q. II. Fill in the blanks.
changes.
1. Rusting of iron can be prevented by
2. Changes in which new substances are formed are called
3. Crystallisation is a
change.
4. Copper sulphate is also known as
5. Within our body, food is digested due to
reaction.​

Answer 1

1. Rusting of iron can be prevented by galvanisation or painting.

2. Changes in which new substances are formed are called chemical changes .

3. Crystallisation is a physical change.

4. Copper sulphate is also known as blue vitriol.

5. Within our body, food is digested due to digestive juices .