Question
$$Pb\,{\text{and}}\,Sn$$ are extracted from their chieforesby
A.
carbon reduction and self reduction respectively
B.
self reduction and carbon reduction respectively
C.
electrolysis and self reduction respectively
D.
self reduction and electrolysis respectively
Answer :
self reduction and carbon reduction respectively
Solution :
Tin can be extracted only by carbon reduction method, while lead can be extracted by self as well as carbon reduction method
$$Sn{O_2} + C \to Sn + C{O_2} \uparrow \,$$
$$PbS + 2PbO \to 3PbO + S{O_2}$$