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Which of the following statements is inc...

Which of the following statements is incorrect?

A

Cassiterite ore of tin contains the impurities of Wol - framite which are separated by electromagnetic separator.

B

Tin metal is obtained by the carbon reduction of black tin.

C

In the extraction of lead from galena the roasting and self - reduction are carried in the same furnace at different temperatures.

D

Reducing agent of haematite in blast - furnaceis coke in upper part and CO in lower part of furnace.

Text Solution

Verified by Experts

The correct Answer is:
D
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