Question

Which is used as lubricant? – (a) gas carbon, (b) coke, (c) diamond, (d) graphite.​

Answer 1

Answer:

Graphite is used as a lubricant due to its slippery nature. ... Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity

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Answer 2

d) Graphite

Explanation :-

• it is due to its Slippery Nature
• it is made up of Carbon
• it is an other form of Carbon (Allotrope of Carbon)
• other Allotropes of Carbon are Diamond