Question

Fill in the blanks by selecting the option with the correct words.
The process of removing impurities from the impure metal to obtain pure metal is known as _____of metal. The most widely used method for refining is _________. In this method, the impure metal is taken as ________ and the pure metal is taken as _____.

• A. refining, electrolytic refining, anode, cathode
• B. calcination, electrolysis, cathode, anode
• C. refining, smelting, cathode, anode
• D. smelting, calcination, anode, cathode

Answer 1

The correct option is A refining, electrolytic refining, anode, cathode

The process of removing impurities from impure metal is called refining.

Electrolytic refining is a widely used method of refining as it is a cost-effective and efficient method.

During the process, the impure metals are taken as anode and, pure metals are taken as the cathode. As electrolysis proceeds, the pure metal keeps depositing on the cathode and, the impurities settle at the bottom.

Hence the correct option is A.