state factors affecting surface tension.
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Impurities present in a liquid appreciably affect surface tension. A highly soluble substance like salt increases the surface tension whereas sparingly soluble substances like soap decreases the surface tension.
*The surface tension decreases with rise in temperature. The temperature at which the surface tension of a liquid becomes zero is called critical temperature of the liquid. *Oxygen in the atmosphere is known to decrease the surface tension of various substances.
*The surface tension decreases with rise in temperature. The temperature at which the surface tension of a liquid becomes zero is called critical temperature of the liquid. *Oxygen in the atmosphere is known to decrease the surface tension of various substances.
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