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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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