The device known as prolong is used in the extraction of :
A
Zn
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B
Ag
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C
Cu
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D
Fe
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Solution
The correct option is A Zn
Prolong is used in the extraction Of Zn.
The mixture of ZnO and coke is heated in fire clay (or) earthern ware retorts, to which long bent iron devices are attached. The long bent iron devices are called prolongs. It is used in the extraction of Zinc.