The method chiefly used for the extraction of lead and tin from there oras are respectrively .

Options

A. self-redoction and carbon reduction
B. self-redoction and electrolytic reduction
C. carbon reduction self reduction
D. cyanide process and carbon reduction

Answer

a

Explanation

Extraction of lead
The first step is the concentration of the crathed ore by froth flotetion method .The product is then rosted in a reverberatory farbace at about `600^(@)C` in a controlled supply of air which oxidless part of the sulphide no sulphate and oxide
`PbS + 2O_(3) rarr PbSO_(4)`
`2PbS + 3O_(2) rarr 2PbO + So_(2)`
THe next consistes odf more strangth lead sulphide reduces (self reduction ) the mixture o0f oxide and sulphide to lead
`PbS + PbSO_(4) rarr 2Pb + 2SO_(2)`
`PbS + 2PbhO rarr 2Pb + SO_(2)`
Extraction of tin
`SaO_(2) + 2C rarr Sn + 2CO`