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NEET UG CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
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Forth floatation method is successful in separating impurities from ores because
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Correct option: D
The pure ore is not easily wetted by water as by pine oil, cresylic acid, etc
Option D is correct because in froth floatation, the ore is preferentially wetted by oil and not by water, allowing it to be separated from impurities.
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Assertion (A): Wolframite impurities are separated from cassiterite by electromagnetic separation.
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:
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: