Assertion :Carbonate and hydroxide ores are concectrated by forth floatation process. Reason: In forth floatation process, mineral oil is used due to it preferentitally wets the gangue particles.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Froth flotation process is used to concentrate sulphide ores.In froth flotation process, mineral oils are not used because it preferentially wets the gangue particles, the particles of sulphide ore are wetted by pine oil whereas the gangue particles are wetted by water.

So both assertion and reason are incorrect. Hence option D is correct.

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