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  • 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:

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.

Answers (1)

best_answer

Dissolution of copper sulphate powder in water in the presence of sulphuric acid is a physical change.

On cooling hot solution formed, the crystals of copper sulphate are separated, this is also a physical change.

Hence option (C) is correct. 

Posted by

Sumit Saini

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