Question

Two drops of dilute sulphuric acid were added to 1 gram of copper sulphate

powder and then small amount of hot water was added to dissolve it (Step-I).

On cooling, beautiful blue coloured crystal got separated (Step-II). Step I and

Step II are:

(a)Physical and chemical changes respectively.

(b)Chemical and physical changes respectively.

(c )Both physical change.

(d) Both chemical change​

Answer 1

Answer:

b) chemical and physical respectfully