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 SiO-2 present in an ore- basic fluxes are used- Reason- Lime is a basic flux-Both assertion and reason are false-Both assertion and reason are true and reason is the correct explanation of assertion-Both assertion and reason are true but reason is not the correct explanation of assertion-Assertion is true but reason is false-

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Enrichment of Ores

Directions: I...

Question

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.

Both assertion and reason are true and reason is the correct explanation of assertion.

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Both assertion and reason are true but reason is not the correct explanation of assertion.

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Assertion is true but reason is false.

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Both assertion and reason are false.

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Solution

The correct option is A Both assertion and reason are true and reason is the correct explanation of assertion.
The reaction involved in removal of acidic impurities with basic flux is:-
$S i O_{2 (a c i d i c i m p u r i t i e s)} + M g C O_{3 (b a s i c f l u x)} \to M g S i O_{3 (f u s i b l e s l a g)} + C O_{2} ↑$

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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 SiO2 present in an ore, basic fluxes are used. Reason: Lime is a basic flux.

The correct option is A Both assertion and reason are true and reason is the correct explanation of assertion.The reaction involved in removal of acidic impurities with basic flux is:- SiO2(acidic impurities)+MgCO3(basic flux)→MgSiO3(fusible slag)+CO2↑

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.