Question

1.Which of the following is a reversible change?
(b) Curdling of milk
(a) Melting of a chocolate
(c) Corrosion of metal
(d) Tearing of a paper
2. Which of the following is not an irreversible change?
(a) Melting of wax
(b) Baking biscuits
(c) Boiling vegetables
(d) Frying food products
3. Digestion of food is an example of
(a) physical change
(b) chemical change
(c) reversible change
(d) None of these
4. Cooling makes the particles of a substance become
(a) tightly packed
(b) stable (c) loosely arranged
5. The jammed metal cap of a glass bottle can be easily opened by
(a) heating the cap
(b) cooling the cap
(C) heating the glass bottle (d) cooling the glass bottle
(d)​

Answer 1

Answer:

1. (a) Melting of a chocolate

2. (a) Melting of wax

3. (b) chemical change

4. (a) tightly packed

5. (C) heating the glass bottle

Hope This Helps You...

Please Follow Me.

Answer 2

Answer:

hope it will help you

1. (a) melting of a chocolate

2.(a) melting of wax

3. (b) chemical change

4. (a) tightly packed

5. (c) heating the glass bottle