JEE Main Chemistry question

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

Not in JEE Main or NEET syllabus

Cassiterite is concentrated by

(A)Liquation
(B)Floatation
(C)Electromagnetic separation
(D)LevigationCorrect

Answer: (D)

Solution

Cassiterite (SnO) is a dense, non-magnetic oxide ore, and such ores are concentrated by gravity-based hydraulic washing (levigation), which separates them from the lighter silicate gangue by washing in a stream of water. Liquation is used for

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Question ID VK-145234