| Fill in the blanks by selecting the option with the correct words. |
| The process of removing impurities from 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
Correct Answer: A
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