Multiple choice

Graphite is used as a lubricant because it is ____.

  1. a good conductor of electricity

  2. soft and greasy

  3. non - combustible

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Graphite has a layered structure where carbon atoms are arranged in flat sheets. These layers can easily slide over each other due to weak van der Waals forces between them, giving graphite its soft and greasy texture that makes it an excellent solid lubricant.

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