Question

There are two processes - let us call them P and Q.
The similarity between P and Q is that both represent a change from liquid state to gas state.
The difference is that in P, change to vapour occurs only at the liquid surface; in 0, it occurs throughout the liquid.

What are P and O respectively.​

options are:-
A. Condensation and Evaporation.
B. Evaporation and Boiling.
C. Boiling and Sublimation.
D. Sublimation and Condensation.

explain your answer ... i will mark the brainliest if you answer all.

Answer 1

Answer:

It is option B) Evaporation and boiling.

Explanation:

because the change to vapour occurs only at the liquid surface is mostly known as the process of evaporation

while talking about boiling, as we all know,

it mostly occurs throught the liquid

therefore, p is evaporation and q is boiling

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Answer 2

Answer:

P and O are evaporation and boiling.

Option number B is correct answer.

Explanation:

• Evaporation is the type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.
• In simple words we can say, it is the process in which liquid change into gas. When water gains heat energy it change into gas.
• Evaporation causes cooling naturally. The molecules move and vibrate so rapidly that they disperse as water vapor molecules into the atmosphere.
• Example of evaporation is- melting of a cube of ice.
• Evaporation is a physical change as it involves only the change of state of water molecules and not its chemical composition.
• Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapor pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.
• Example of boiling is seen when water is heated until it forms steam.

Hence, option B is correct answer which is Evaporation and Boiling.

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