2023 · Q40
Which one of the following statements is correct about diamond and graphite?
General KnowledgeChemistry
- ADiamond and graphite have similar physical and chemical properties.
- BDiamond is hard but graphite is smooth and slippery.
- CDiamond and graphite are both non-conductors of electricity.
- DBoth diamond and graphite have similar structures.
Explanation
Diamond has a rigid tetrahedral 3D network and is extremely hard, while graphite's weakly bonded carbon layers slide over each other, making it soft, smooth and slippery. They differ in physical properties and structure, and graphite conducts electricity, so options A, C and D are wrong.