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Which of the following statements is cor...

Which of the following statements is correct?

A

In Hall-Heroult process, the electrolyte used a molten mixture of alumina, sodium hydroxide and cryolite.

B

Lead is extracted from its chef ore by both carbon reduction and self ruduction.

C

Tin is extracted from its chief ore by carbon monoxide reduction.

D

Siderite, cassiterite and argenjtite are cabonate ores.

Text Solution

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The correct Answer is:
B
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