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Standard XII

Chemistry

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Assertion :Th...

Question

Assertion :The reduction of silica with excess carbon under appropriate conditions give silicon carbide Reason: Silicon carbide (SiC) is also known as Corundum.

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
The reduction of silica with excess carbon gives silicon carbide, $S i C$ ,which is a hard, high melting solid and a well known abrasive. It may also be sintered into a type of high-strength ceramic used in armor.It is also known as Corundum.

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

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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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