JEE Main · 2019 · 12 Apr 2019 · Shift 1 · General Principles and Processes of Isolation of Metals

The idea of froth floatation method came from a person

X

and this method is related to the process

Y

of ores.

X

and

Y

, respectively, are:

(A)washer woman and concentration✓ Correct
(B)fisher woman and concentration
(C)fisher man and reduction
(D)washer man and reduction

Answer: (A)

Solution

Froth flotation is a method of ore concentration, used to float sulphide mineral particles away from the heavier gangue on a mass of froth. The idea is traditionally credited to a washer woman who noticed how the froth from washing carried certain material along with it. So the person and the process are a washer woman and concentration.

JEE Main · 2019 · 12 Apr 2019 · Shift 1 · Single correct option

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