Which of the following statements are not correct?A. Copper is extracted by self reduction method.B. Cast iron is the purest form of iron.C. The concentra of malachite ore is `Cu(OH)_(2).2CuCO_(3)D. Cupellation process is used for the refining of Ag and Au.

Which of the following statements are not correct?A. Copper is extract

1.	Which of the following statements are not correct?A. Copper is extracted by self reduction method.B. Cast iron is the purest form of iron.C. The concentra of malachite ore is `Cu(OH)_(2).2CuCO_(3)D. Cupellation process is used for the refining of Ag and Au.
Answer» Correct Answer - B,C

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Which of the following statements are not correct?A. Copper is extracted by self reduction method.B. Cast iron is the purest form of iron.C. The concentra of malachite ore is `Cu(OH)_(2).2CuCO_(3)D. Cupellation process is used for the refining of Ag and Au.

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