Which among the following statements is not correct with respect to al

Which among the following statements is not correct with respect to allotropes of Carbon ?

Graphite is a good conductor of electricity.

Diamond is the hardest substance known.

Fullerene is one of the allotropes of carbon.

Next to diamond, graphite is the second hardest known substance.

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC NDA-1 – 2023

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Diamond is indeed the hardest naturally occurring substance known. Graphite, another allotrope of carbon, has a layered structure that allows the layers to slide over each other. This makes graphite very soft, greasy to touch, and suitable for use as a lubricant and in pencil leads. It is far from being the second hardest known substance; many materials, both natural and synthetic, are significantly harder than graphite.

– Allotropes are different structural modifications of an element.
– Diamond is the hardest known substance.
– Graphite is soft and used as a lubricant.
– Fullerene is an allotrope of carbon.
– Graphite’s soft nature contradicts the statement that it is the second hardest substance.

Other allotropes of carbon include carbon nanotubes, graphene, and amorphous carbon. The different properties of carbon allotropes arise from the different ways carbon atoms are bonded together in their structures.

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