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.

Which of the following statements is correct?A. In Hall-Heroult proces

1.	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.
Answer» Correct Answer - B

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