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Which of the following is used as a lubricant?

/ Everyday Science Mcqs / By
Which of the following is used as a lubricant?

A. Graphite
B. Silica
C. Diamond
D. Iron oxide

Graphite is best suited for lubrication in air. It is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant.