Q.

Water drops are spherical because of -

A. viscosity
B. density
C. polarity
D. surface tension
Answer» D. surface tension
Explanation: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer. In the absence of other forces, including gravity, drops of virtually all liquids would be approximately spherical.
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