Discussion :: Physics
- On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
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A.
mercury is a metal. |
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B.
density of mercury is greater than that of water. |
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C.
cohesion of mercury is greater than its adhesion with glass. |
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D.
cohesion of water is greater than its adhesion with glass. |
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Answer : Option C
Explanation :
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because cohesion of mercury is greater than its adhesion with glass.
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