Q. Which one of the following ores is best concentrated by froth flotation method?

NTA AbhyasNTA Abhyas 2022 Report Error

Galena

Malachite

Magnetite

Siderite

Solution:

Froth flotation method is used for concentration of sulphide ores.
Galena $\rightarrow P b S$
Malachite is $Cu _2\left( CO _3\right)_2( OH )_2$
Magnetite is $Fe _3 O _4$
Siderite is $FeCO _3$

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