Question : Ultra purification of metal is done by :
Option 1: Slugging
Option 2: Zone melting
Option 3: Smelting
Option 4: leaching
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Correct Answer: Zone melting
Solution : The correct option is - Zone melting
Zone melting is the method used to purify metals to the highest degree. A little amount of the metal is first melted, and then it is pushed along the remaining metal while impurities are removed.
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