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Q.

Select the correct statement.

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a

Alkali metals are generally extracted by electrolysis of their ores in fused state.

b

Levigation is generally employed for concentration of sulphide ores.

c

Every mineral is an ore, but every ore is not a mineral.

d

Slag is a product formed during smelting by combination of flux and impurities.

answer is .

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Detailed Solution

Correct for option (2) is Froth flotation process is employed for concentration of sulphide ores.Levigation is the process of decreasing the particle size.
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