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Standard XII

Chemistry

Graphite

Assertion :Gr...

Question

Assertion :Graphite is used as anode but not diamond. Reason: Graphite is good conductor of current due to sp $^{2}$ hybridisation having mobile $π$ electrons. Diamond has sp $^{3}$ hybridisation and is insulater.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Graphite is a good conductor of current due to sp $^{2}$ hybridisation having mobile $π$ electrons so it can be used as anode but diamond has sp $^{3}$ hybridisation and is an insulater so it cant be use as anode.

Thus, both assertion and reason are correct and reason is the correct explanation for assertion.

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Similar questions

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) Graphite is a good conductor of electricity however diamond belongs to the category of insulators.

Reason (R) Graphite is soft in nature on the other hand diamond is very hard and brittle.

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

electrons.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

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.

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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Assertion :Graphite is used as anode but not diamond. Reason: Graphite is good conductor of current due to sp2 hybridisation having mobile π electrons. Diamond has sp3 hybridisation and is insulater.

Assertion :Graphite is used as anode but not diamond. Reason: Graphite is good conductor of current due to sp $^{2}$ hybridisation having mobile $π$ electrons. Diamond has sp $^{3}$ hybridisation and is insulater.