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
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Answer:
b) chemical and physical respectfully
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