Q.

The process by which a liquid turns into a gas is known as:


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a

Evaporation

b

Condensation

c

Sublimation

d

None 

answer is A.

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Detailed Solution

Concept- A liquid vapourises when it turns into a gas. Either boiling or evaporation can cause the process to happen.
When a liquid's vapour pressure is heated to the point where it is equivalent to air pressure, boiling results. Liquid particles will now begin to evaporate and move into the gas phase.
When particles on a liquid's surface enter the gas phase, evaporation takes place. This can happen at temperatures lower than the boiling point and is brought on by the movement of particles. Warmth causes a rise in the liquid's vapour pressure, which causes evaporation to happen more quickly in liquids.   Hence, the correct answer is option 1.
 
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