Question

Mark the correct statements:

(i) mercury can be refined by the process of distillation.

(ii) In poling, the molten impure metal is stirred with green poles of wood.

(iii) In electrolyte refining of metals, impure metal is made as cathode and a thin strip of pure metal is made as anode.

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii) and (iii)
• D. (i), (ii) and (iii)

Answer 1

Answer: (A)

(i) and (ii)

Low boiling point metals like Mercury are purified with distillation.

Hence, statement (i) is correct.

The heat of copper makes the pole emit wood gas that reduces the cuprous oxide to copper.

In poling, the molten impure metal is stirred with green poles of wood.

Hence,option (ii) is correct.

In electrolyte refining of metals, impure metal is made as Anode and a thin strip of pure metal is made as cathode.

Hence, option (iii) is incorrect.