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Which of the following statemetn is/are ...

Which of the following statemetn is/are incorrect?

A

Combination of tin stone and wolframite is non magnetic.

B

No external reducing agent is required for the extraction of Hg from HgO.

C

For Cu extraction in bessmer converter, the process like slag formation, oxidation and reduction take takes.

D

Poling method is mainly used when impure metal is having its oxide as impurity.

Text Solution

Verified by Experts

The correct Answer is:
A
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