JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

Bauxite ore is concentrated by

(A)Froth floatation
(B)Electromagnetic separation
(C)Chemical separationCorrect
(D)Hydraulic separation

Answer: (C)

Solution

Bauxite is concentrated by a chemical method (leaching, e.g. the Bayer process), in which the powdered ore is treated with a reagent (hot concentrated NaOH) that dissolves the alumina while leaving the iron

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Question ID VK-145238