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Standard XII

Chemistry

Graphite

Assertion :Gr...

Question

Assertion :Graphite is a good conductor of heat and electricity Reason: Graphite has all the electrons firly held together in C-C $σ$ -bonds

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
Graphite and diamonds are allotropes of carbon in which Graphite is a good conductor of heat and electricity because it has free electrons in its structure.In graphite, the carbon atoms undergo $S p^{3}$ hybridization so there are c=c bonds are present, not c-c sigma bonds.So Assertion is correct but Reason is incorrect Hence option D is correct.

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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.

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Statement-1 : In (cyclobutadiene) all C-C bond lengths are equal.

Statement-2 : Cyclobutadiene is aromatic and the

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The Assertion and Reason are given, you are required to choose any one of the following four responses.

A) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C) The Assertion is correct but Reason is incorrect

D) Both Assertion and Reason are incorrect

Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.
Reason: Equation of the x-axis is y = 0

Choose the correct option.

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Assertion :Graphite is a good conductor of heat and electricity Reason: Graphite has all the electrons firly held together in C-C σ-bonds

Assertion :Graphite is a good conductor of heat and electricity Reason: Graphite has all the electrons firly held together in C-C $σ$ -bonds