Question

_________ is slippery to touch, hence used as a lubricant.

• A. Sugar charcoal
• B. Coke
• C. Diamond
• D. Graphite

Answer 1

The correct option is D Graphite

Graphite : $C$ Is $s{p}^2$ hybridised. Each $C$ is linked to $3$ other atoms forming hexagonal rings. So, it has $2D$ sheet like structure. The various sheets are held by Vander Waal's force of attraction. The layers can slipover the other. This makes it soft and a lubricating agent.