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Subject :Chemistry    Class : Class 7

Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals 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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