Pb is a very important element of carbon family. It forms a number

Name: Pb is a very important element of carbon family. It forms a number of compounds which are very useful in industries. The process of removal of base metals (Cu, Sn, Bi, As) from lead is called:
Uploaded: 2021-01-01T18:41:02.000Z
Duration: 2 min
Description: Pb is a very important element of carbon family. It forms a number of compounds which are very useful in industries. The process of removal of base metals (Cu, Sn, Bi, As) from lead is called:

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Class 12 Chemistry Metallurgy General Principles and Processes of Isolation of Elements

Pb is a very important element of carbon family. It forms a number of compounds which are very useful in industries. The process of removal of base metals (Cu, Sn, Bi, As) from lead is called:

(a)

softening process

(b)

liquation

(c)

parke's process

(d)

cupellalion

Correct answer: (a)

Solution: For the removal of base metals the impure bullion is charged to a softening furnace whereby oxidation these elements form drosses or slags and, with some lead, are skimmed from the bath. This is the softening process.

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