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  3. Chemistry
  4. Carbon acts as an abrasive and also as a lubricant. explain.

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Q. Carbon acts as an abrasive and also as a lubricant. explain.

IIT JEEIIT JEE 1981The p-Block Elements

Solution:

The two common allotropes of carbon are diamond and graphite. Diamond is the hardest, natural, substance, used as an abrasive while graphite is soft, used as a lubricant.