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| Q. |
Surface tension in a liquid is due to : |
| A. | Adhesive force between molecules |
| B. | Cohesive force between molecules |
| C. | Gravitational force between molecules |
| D. | Electrical force between molecules |
| Answer» B. Cohesive force between molecules | |
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Explanation: Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids. |
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