Two drops of dilute sulphuric acid were added to lg of copper sulphate powder and then small amount of hot water was added to dissolve it (Step I). On cooling, beautiful blue coloured eystals 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:C
Two drops of dilute sulphuric acid were added to lg of copper sulphate powder and then small amount of hot water was added to dissolve it (Step I). On cooling, beautiful blue coloured eystals 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