Chemistry Past Questions and Answers

The chemical reaction which takes place at the anode (positive electrode) in electrolysis is?

Which of the following does NOT happen when a zinc rod is introduced into a solution of copper (ll) sulphate?

Hardening of an oil may be achieved by?

Hardening of an oil may achieved by?

A cold aqueous solution of sodium chloride is electrolyzed using a graphite anode and an iron cathode. In the course of the electrolysis the electrolyte is continuously stirred. The liquid left after electrolysis will therefore consist of?