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Q.

Choose the correct statement :

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a

Diamond and graphite have two dimensional network.

b

Both diamond and graphite are used as lubricants.

c

Diamond is covalent and graphite is ionic.

d

Diamond is sp3 hybridised and graphite is sp2 hybridized.

answer is B.

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Detailed Solution

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In diamond – ‘C‘ undergoes – sp3 hybridisation – Tetrahedron
In graphite – ‘C‘ undergoes – sp2 hybridisation – Hexagonal layer structure
(1) Diamond, graphite – 3D
(2) Diamond, graphite – Covalent
(3) Graphite is used as a lubricant.

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