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Question

Steam coming out of pressure cooker are invisible till a certain radial distance is reached. Why?


A

Vapour is invisible

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B

Steam particles carry huge kinetic energy

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C

Steam particles carry huge potential

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D

Steam particles disappear fast

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Solution

The correct option is B

Steam particles carry huge kinetic energy


Steam particles carry huge kinetic energy

Steam particles carry huge kinetic energy and hence are invisible till they come in contact with cooler molecules in the surrounding. The interaction of steam and rest of surrounding molecules result in the formation of the white cloud due to condensation. Any molecule which moves with huge energy is invisible to eyes.


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