JEE · NEET Previous Year Question
Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite
Topic: JEE PYQ
Answer: C. Full step-by-step solution below.
- Ais an allotropic form of carbon
- Bis a non-crystalline substance
- Chas carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
- Dhas molecules of variable molecular masses like polymers.
Correct answer: C
Solution
(c) : Graphite has carbon atoms arranged in large plates of rings of strongly bound carbon atom with weak interplate bonds as they held by van der Waals' forces. Thus two adjacent layers can easily slide over each other. Therefore graphite is soft and possesses low density. Also due to hybridisation. Therefore bond is shorter and stronger therefore have high melting point.More p-Block Elements PYQs
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