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What makes the hair of shaving brush cling together when removed from water?

Q. What makes the hair of shaving brush cling together when removed from water?
 A   Viscosity
 B   Surface tension
 C   Cohesion
 D   None of these
Answer:-Surface tension
Explanation:  

The force inside the molecules of water also pulls in the hair on the shaving brush as they have less mass, and due to this tension in the surface of the water the hair sticks together

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