JEE Main Chemistry question

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

Not in JEE Main or NEET syllabus

Which one of the following ores is best concentrated by froth-floatation method? [UP SEE 2007]

(A)Magnetite
(B)Cassiterite
(C)GalenaCorrect
(D)Malachite

Answer: (C)

Solution

Froth floatation is the standard concentration method for sulphide ores, which are preferentially wetted by oil/collector and float with the froth; galena () is a sulphide ore and is ideally concentrated

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Question ID VK-138278