Tag: states of matter: boiling, evaporation and condensation

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Questions Related to states of matter: boiling, evaporation and condensation

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

The rate of evaporation increases with:

  1. increase of surface area

  2. increase of temperature

  3. increase in wind speed

  4. all of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If the surface area is increased, the rate of evaporation increases. With the increase of temperature, more number of particles get enough kinetic energy to go into the vapour state.  With the increase in wind speed, the particles of water vapour move away with the wind, decreasing the amount of water vapour in the surrounding.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

While putting clothes for drying up, why do we spread them out?

  1. Surface area is directly proportional to rate of evaporation.

  2. Increase in surface area decreases rate of evaporation.

  3. Increase in surface area increases rate of evaporation.

  4. Both A and C.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Evaporation is a surface phenomenon. If the surface area is increased, the rate of evaporation increases. While putting clothes for drying up, we spread them out, because, more area is exposed to sun and wind which speeds up the rate of evaporation.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Identify the factors which cause evaporation?

  1. High pressure on water surface

  2. Specific heat

  3. Latent energy

  4. All of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Evaporation is the surface phenomenon in which if their high-pressure present on the surface of the liquid, it reduces the rate of evaporation. 


Storms are examples of high-pressure systems that slow down evaporation.

Therefore, the option is A.

Multiple choice chemistry states of matter: boiling, evaporation and condensation atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Evaporation is a _______ phenomenon.

  1. surface

  2. bulk

  3. solid

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Surface phenomenon is a process in which only the surface of the any substance or object is involved in the process. In Evaporation only surface of the liquid involves in the process, its bulk remain unaffected by evaporation. Hence, it is a surface phenomenon.