JEE Main Chemistry question

Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite

(A)Is a non-crystalline substance
(B)Is an allotropic form of diamond
(C)Has molecules of variable molecular masses like polymers
(D)Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bondsCorrect

Answer: (D)

Solution

Graphite consists of planar hexagonal sheets where carbon atoms are strongly covalently bonded (), giving a very high melting point, while the sheets are held together only by weak van der Waals forces, allowing them to slide

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Question ID VK-138198