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Question

________ is slippery to touch, hence used as a lubricant.
  1. Coke
  2. Fullerene
  3. Graphite
  4. Lamp black

A
Graphite
B
Lamp black
C
Coke
D
Fullerene
Solution
Verified by Toppr

Graphite consists of hexagonal rings forming parallel plates held by weak wander Waals forces. In this, each carbon is sp2 hybridized.
These hexagonal sheets can slip over each other thus they are used in a lubricant.

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