ASSERTION: In froth floatation process, sodium ethyl xanthate is used as a collector.
REASON: Sulphide ores are water soluble.

If both assertion and reason are CORRECT, and the reason is the CORRECT explanation of the assertion.

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If both assertion and reason are CORRECT, but the reason is NOT the CORRECT explanation of the assertion.

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If assertion is CORRECT but reason is INCORRECT.

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If assertion is INCORRECT but reason is CORRECT.

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Solution

The correct option is D If assertion is CORRECT but reason is INCORRECT.
Froth Flotation: The process is based on the principle of preferential wetting of ore particles by the oil and gangue by water. In this process, sodium ethyl xanthate is used as a collector.
The sulfide ores are highly insoluble in water.

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In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Sulphide ores are concentrated by froth flottion method.
Reason (R) Cresols stabilise the froth in froth floatation method.

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ASSERTION: In froth floatation process, sodium ethyl xanthate is used as a collector.REASON: Sulphide ores are water soluble.

ASSERTION: In froth floatation process, sodium ethyl xanthate is used as a collector.
REASON: Sulphide ores are water soluble.