Which property of diamond allows it to be used in knives for cutting marble

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Solution

Dear Student, Diamond is a good conductor of heat as in diamond each carbon atom is tetrahedrally bonded to other carbon atoms. All the electrons are close together due to a strong bond between the atoms causing vibrations. Thus making it a good conductor of heat. Regards

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Q. Assertion :Diamond is used for cutting glass. Reason: Diamond has a high refractive index.

(a) What is buckminsterfullerene? How is it related to diamond and graphite?
(b) Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
(c) Why is graphite used for making dry cell electrodes but diamond is not?

Q. Assertion (A) : Diamond is used for cutting glass.
Reason (R) : Diamond has a high refractive index.

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