Which of the following ores is best concentrated by froth floatation method?

Galena

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Cassiterite

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Magnetite

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Malachite

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Solution

The correct option is A Galena
Froth-floatation process is used to concentrate sulphide ores. Only galena ( $P b S$ ) is a sulphide ore. Cassiterite is $S n O_{2}$ , magnetite is $F e_{3} S O_{4}$ and malachite is $C u (O H)_{2} . C u C O_{3}$ .

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Which one of the following ores is best concentrated by froth floatation method ?

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