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Softening of lead refers to...

Softening of lead refers to

A

Conversion of lead to PbO

B

Conversion of lead to `Pb_3O_4`

C

Removal of impurities (metallic) from lead

D

Washing lead with `HNO_3` followed by a dilute alkali solution

Text Solution

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The correct Answer is:
C
Removal of arsenic, antimony and tin dissolved in the melt. Oxygen is blown into molten impure lead.
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