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Which of the following statements is incorrect?

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Cassiterite contains the impurities of Wolframite which is separated by electromagnetic separation

Fools gold is iron pyrites

In the extraction of lead from galena, the roasting and self-reduction are the processes involved

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

answer is D.

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Detailed Solution

In the temperature zone of 500K-800K, ‘CO’ is the reducing agent. At about 1800K-2000K coke is the reducing agent

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