Question
Describe the froth floatation process of concentration of ores.
✓
Answer
Froth Floatation Process :This method is used for the concentration of sulphide ores. In this method powdered ore is added to water containing pine oil and air is passed through it. Ore particles stick to the oil droplet and rise to the surface in the form of froth. Gangue particles are wetted by water and sink to the bottom.
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$OR$
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ii. Transition metals, despite high $E^\circ$ oxidation, are poor reducing agents. Justify.
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$OR$
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