Question

Why is graphite used as a lubricant?

Answer 1

Because it works.......?

Explanation:

Powdered graphite is a known lubricant. To a first approximation, between the graphite layers there is very weak interaction, and the graphite layers are conceived to slide and slip over each other. (There are more sophisticated rationales available, but as an undergrad or A-level student you should not have to address them.)