Assertion :Levigation is used for the separation of oxide ores from impurities. Reason: Ore particles are removed by washing in a current of water.

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 C Assertion is correct but Reason is incorrect
Assertion is true but reason is false.
Oxide ores being heavier than the earthy or rocky gangue particles settle down while lighter impurities are washed away.

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Similar questions

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Q. Directions: In the following questions, a statement of assertion is followed by a statement of reason.
Mark the correct choice as:
Assertion: For acidic impurities like

S i O_{2}

present in an ore, basic fluxes are used.
Reason: Lime is a basic flux.

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

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Assertion :Levigation is used for the separation of oxide ores from impurities. Reason: Ore particles are removed by washing in a current of water.

The correct option is C Assertion is correct but Reason is incorrectAssertion is true but reason is false. Oxide ores being heavier than the earthy or rocky gangue particles settle down while lighter impurities are washed away.

The correct option is C Assertion is correct but Reason is incorrect
Assertion is true but reason is false.
Oxide ores being heavier than the earthy or rocky gangue particles settle down while lighter impurities are washed away.