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| Q. |
Pieces of camphor placed on water move about rapidly. This is because of - |
| A. | diffusion |
| B. | viscosity |
| C. | surface tension |
| D. | capillarity |
| Answer» C. surface tension | |
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Explanation: The Camphor slowly dissolves in the water lowering the latter’s surface tension in the immediate neighborhood. The stronger pull exerted by the uncontaminated portion of water brings about a movement of the surface and the camphor particles are carried along with it. |
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