1.Some crystals of copper sulphate were dissolved in water, formed which colour?
Ans:blue colour
2.When dilute HCL added to zinc pieces, then what will happen?
Ans: Small bubbles of H2 glass appear in the surface of Zink pieces
3. What is chemical rust?
Ans: hydrated ferric oxide
4. What is the charge of anode?
Ans: Positive charge
5. What is the charge of cathode?
Ans. Negative charge