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

Options

A. Self-reduction and carbon reduction
B. Self-reduction and electrolytic reduction
C. Carbon reduction and self-reduction
D. Cyanide process and carbon reduction

Answer

A

Explanation

The methods chiefly used for the extraction of lead and tin from their ore are self-reduction and carbon reduction, respectively.
Tin is extracted from oxide ore cassiterite by reduction with carbon in a reverberatory furnace.
`SnO_(2) + 2C rarr Sn + 2CO`
Lead is mainly extracted from sulphide ore called galena.
Self-reduction finally takes place.
`2PbO + PbS rarr 3Pb + SO_(2)`
`PbSO_(4) + PbS rarr 2Pb + 2SO_(2)`.