Question

Whoever will give this answer correct I will mark him as a brainliest

Answer 1

Answer:

a fig a physical changes ,fig b chemical change

Explanation:

physical change -the change which we can't get reverse

chemical change -which also can't reverse but sometime s it can reverse

Answer 2

(A) Desirable change

(B) Irreversible change

Any change that is useful to us is called desirable change .

Any change that cannot be reversed to get back the original substance in their original form is called an irreversible change .