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Softerning of lead means:...

Softerning of lead means:

A

Coversion of lead in to PbO

B

Conversion of lead into `Pb_3O_4`

C

Removal of metallic impuriies from lead

D

Washing lead with `HNO_3` followed by dilute alkali solution

Text Solution

Verified by Experts

The correct Answer is:
C
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