Answers

2014-10-18T11:55:58+05:30
lubricant :
               a lubricant is a substance which is used to reduce friction between objects in mutual contact
example : grease,wax
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2014-10-18T11:57:46+05:30
Lubricant is a substance used to reduce friction between two surfaces which is in contact with  each other.
It is also used to increase ease of functioning.
Examples: Grease, Oil, etc
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Lubricants are substances which can used to reduce friction