Q.

The substances which reduce friction are called ____.


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Detailed Solution

The substances which reduce friction are called lubricants.
A lubricant is a substance that helps to reduce friction between surfaces in mutual contact. Graphite, grease, oils, and other materials are examples of lubricants. These create a thin layer between the two surfaces coming into touch, preventing them from rubbing up against one another. It decreases friction and makes the movement smooth.
 
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