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.
Everyday Science Mcqs. Here you will find the General Science Multiple Choice Questions Mcqs are from Biology, Chemistry, Physics and Atmospheric Studies. Everyday Science Online Test 2 Mcqs Preparation Practice Questions. All Important Abbreviation related to Everyday Science in MCQs. General Science mcqs and Scientific facts MCQs. Everyday Science MCQs with Answers.