Which of the following has the highest surface tension?

Water

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Soap in water

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Detergent in water

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Glycerol in water

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Solution

The correct option is D Glycerol in water
Glycerol in water has the highest surface tension
The surface tension of soap in water and detergent in water is lower than the surface tension of pure water.
Note:
Sparingly soluble salts and surface active substances decrease the surface tension of the liquid, however, the fairly soluble solutes increase the surface tension of the liquid.

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