State one relevant reason for : Graphite anode is preferred to platinum in the electrolysis of molten lead bromide.

Give one word or a phrase for the statement : Electrode used as cathode in electrorefining of impure copper.

Choose the correct word which refers to the process of electrolysis from A to E, to match the description (i) to (iv): A: Oxidation, B: Cathode, C: Anode , D: An electrolyte , E : Reduction

(i) Conducts electricity in aq. or in molten state.

(ii) Loss of electrons takes place at anode.

(iii) A reducing electrode

(iv) Electrode connected to the positive end or terminal of the battery.

Differentiate between the following pairs based on the information given in the bracket. Conductor and electrolyte [conducting particles]