Question

3. On heating, the solubility of a substance
(a) increases
(b) decreases
(c) first increases and then decreases (d) none of the above
4. Powdering of sugar is a
(a) chemical change
(b) physical change
(c) both (a) and (b)
(d) none of the above
5. Making a paper boat by cutting paper is an
(a) irreversible change
(b) physical change
(c) both (a) and (b)
(d) none of the above​

Answer 1

Answer:

3 _ increases

4 _chemical change as well as physical change

5 _ irreversible change as well as physical change

Answer 2

Answer:

3. On heating, the solubility of a substance

Ans - (a) increases

4. Powdering of sugar is a

Ans - Both a & b

5. Making a paper boat by cutting paper is an

Ans -