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NEET UG CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
1
Medium
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Analyzing
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Select the incorrect match.
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Correct option: D
Both (1) and (3)
Option D (Both (1) and (3)) is correct because highly electropositive metals are extracted by electrolytic reduction, not smelting, and less electropositive metals can be extracted by chemical reduction, not necessarily electrolytic extraction.
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Assertion (A): Wolframite impurities are separated from cassiterite by electromagnetic separation.
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Reason (R): Cassiterite being magnetic is attracted by the magnet and forms a separate heap. Which one is an ore of sodium? Aluminothermic process is used for the extraction of metals, whose oxides are: In the extraction of copper, the metal formed in the Bessemer’s converter is due to the reaction: