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Assertion :- (A) Graphite is good cond...

Assertion :- (A) Graphite is good conductor of electricity however diamond belongs to the category of insulators .
Rason (R ) Grapite is soft in anture on the hand diamond is very hard and brittle.

A

Assertion and reason both are correct statements and Reason is correct explantion for Assertion .

B

Asserton and Reason both are correct statement but Reason is not correct explanation for assertion .

C

Assertion is correct statement but reason is worng statement .

D

Assertion is Wrong statement but Reason is correct statement .

Text Solution

Verified by Experts

The correct Answer is:
B
Assertion and reason both are correct have layered structure with free electrons due to which it is a good conductor of electricity On the other hand , diamond have tetrahedral arrangement with no unpaired electron . Therefore , diamond is hard and brittle but insulator .
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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.

Why is graphite a good conductor of electricity but diamond is not?

Assertion (A) : Diamond is a good conductor of electricity Reason (R) : Diamond and graphite are two allotrope carbon and graphite is a good conductor of electricity

Assertion (A) : Graphite is chemically more reactive than diamond . Reason (R) : Diamond is very hard but fraphite si soof .

Assertion (A) : Graphite is soft while diamond is very hard . Reason (R) : Graphite has a hree -dimensional structure while diamond has planer struture .

Assertion : Diamond is a bad conductor . Reason : Graphite is a good conductor.

(A) Graphite is soft while diamond is hard. (R) Graphite has three dimensional structure while diamond has planar.

Assertion : Among the carbon allotropes, diamond is an insulater, wherea, graphite is a good conductor of electricity. Reason : Hybridization of carbon in diamond and graphite are sp^3 and sp^2 , respectively.

NCERT EXEMPLAR-SOLID STATE-Solid State
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  2. why does white Zn0(s) becomes yellow upon heating ?

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  4. Expalin why does conductivity of germainum crystals increase on ...

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  5. A compound formed by two elements M and N. Element N forms ccp and ato...

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  6. Under which situations can an amorphous substance change to cryst...

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  7. match the defects given in column I with the statements in given...

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  8. match the type of unit cell given column I with the features iv...

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  9. match the types of defect given in column I with the statement...

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  10. match the items given in column I with the items given in colum...

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  11. Match the type of packing given in column I with the iterms give...

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  12. Assertion :- (a) the total number of atoms present in a simple c...

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  13. Assertion :- (A) Graphite is good conductor of electricity however ...

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