Which of the following substances are crystalline allotrope of carbon?
(i) Diamond (ii) Charcoal (iii) Graphite (iv) Lamp black (v) Coke (vi) Fullerene

(i) to (vi) all

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(i), (ii) & (iv)

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(i), (iii) & (vi)

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(iv), (ii), (v)

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Solution

The correct option is B (i), (iii) & (vi)
Eight allotropes of carbon:
Diamond
Graphite
Lonsdaleite
$C 60$ Buckminsterfullerene
$C 540$ Fullerite
$C 70$ Fullerene
Amorphous carbon
Single-walled carbon nanotube
Crystalline allotropes are diamond, graphite, Fullerite, $C 60$ , carbon-nanotube
Hence option $C$ is correct

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Which of the following substances are crystalline allotrope of carbon?(i) Diamond (ii) Charcoal (iii) Graphite (iv) Lamp black (v) Coke (vi) Fullerene

The correct option is B (i), (iii) & (vi)Eight allotropes of carbon: DiamondGraphiteLonsdaleiteC60 BuckminsterfullereneC540 Fullerite C70 FullereneAmorphous carbonSingle-walled carbon nanotubeCrystalline allotropes are diamond, graphite, Fullerite, C60, carbon-nanotubeHence option C is correct

Which of the following substances are crystalline allotrope of carbon?
(i) Diamond (ii) Charcoal (iii) Graphite (iv) Lamp black (v) Coke (vi) Fullerene