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Standard XII

Chemistry

Emulsions

Assertion :Fr...

Question

Assertion :Froth floatation process is based on the different wetting nature of ore and gangue particles. Reason: Mustard oil is used as frother in froth floation process.

Both assertion and reason are correct and the reason is the correct explanation for assertion

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Both assertion and reason are correct but the 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 C Assertion is correct but reason is incorrect
Froth floatation process is based on the different wetting nature of ore and gangue particles hence it is used for sulphide ores. Mustard oil is not used as frother in froth floatation process, we use pine oil for that.
hence option (C) is correct.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

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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.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

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