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Evaporation

Evaporation i...

Question

Evaporation is a type of vaporization of a liquid that occurs from _________.

A

bottom of a solid

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B

bottom of a liquid

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C

surface of a gas

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D

surface of a liquid

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Solution

The correct option is C surface of a liquid
Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. Evaporation occurs only at the surface of a liquid.

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Q. Assertion :Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase. Reason: Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance

Q. Assertion :Evaporation occurs on the surface of liquid and it is a vaporization of liquid. It is a state of transition from liquid to gaseous state. Reason: Evaporation occurs when there is exposure of water to air and water molecules change into vapor and these vapors rise up and form clouds.

Q. A liquid is in equilibrium with its vapor in a sealed container at a fixed temperature.The Volume of the container is suddenly increased.
(a) What is the initial effect of the change on vapor pressure ?
(b) How do rates of evaporation and condensation change initially?

Q. During evaporation
(a) solid changes into a gas.
(b) liquid changes into a gas.
(c) gas changes into a liquid.
(d) solid changes into a liquid.

Q. Statement 1: After a period of time in a closed container, the rate of evaporation of a liquid will equal the rate of condensation.
Statement 2: An equilibrium will be established between a liquid and its vapor in a closed container held at constant temperature.

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