Tag: let's play with water

Questions Related to let's play with water

When you get in your car in the morning and are breathing warmer air, the warm air comes into contact with the cooler windshield and forms a foggy window. It is an example of :

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. evaporation

  2. sublimation

  3. condensation

  4. both A and C

Show answer
Correct Option: C
Explanation:

Condensation is the process by which water vapor in the air is changed into liquid water.Cloud formation is caused by condensation of water vapor in the atmosphere condensing into a liquid state. Thus Option C is correct.

The process of changing water vapour into water is called:

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. boiling

  2. evaporation

  3. melting

  4. condensation

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Correct Option: D
Explanation:

The process of changing water vapour into water is called condensation.

Condensation is simply the process of change of the vapour from gaseous state to liquid when comes in contact of cool surface.
And this process can't be boiling as in boiling we have to provide heat and it is the change of liquid state into vapour form.
And the process is not evaporation as it also changes water into vapour.
Melting is not the required process as it is the change of state from solid to liquid.

Evaporation causes:

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. cooling

  2. heating effect

  3. an increase in weight

  4. an increase in density

Show answer
Correct Option: A
Explanation:

Evaporation causes cooling.

Because in evaporation the water changes form liquid to vapour state so the vapour of water causes the surface to becomes cool.
Evaporation causes cooling because during evaporation the particle of the liqued absord energy from the surroundings to regain the energy lost during evaporation. the absorbtion of heat from the surrounding makes the surrounding  cool.

Which of the following is an example of evaporation?

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. Drying of hair

  2. Preparation of common salt from sea water

  3. Dew in the morning

  4. Cooling of hot tea

Show answer
Correct Option: A,B,D
Explanation:
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.
Drying of leads to water loss in hair or water evapouration leads to water evapouration.
Producing of salt also leads of water evaporation from salted water.
Cooling of hot tea leads to water codensation not evaporation.

In which of the following processes evaporation involves

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. Hot tea gets cool over time

  2. Preparation of common salt from sea water

  3. Wet clothes dry in sun

  4. A,B,C

Show answer
Correct Option: D
Explanation:

Evaporation is the process of a liquid converts into gaseous phase. In all these process liquid moles are evaporated into gaseous phase. Hence, option D is correct.

Wet clothes dry in sun Due to

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. Evaporation

  2. Condensation

  3. Sublimation

  4. Freezing

Show answer
Correct Option: A
Explanation:

Wet clothes dry in sun due to evaporation the water in wet clothes takes heat energy from sun and gets evaporated.This process involves evaporation.
Hence, option A is correct.

Drying clothes is an example of :

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. condensation

  2. evaporation

  3. hydration

  4. all of the above

Show answer
Correct Option: B
Explanation:

Drying clothes is an example of evaporation as in evaporation water evaporates by the heat of the sun thus helping in drying of clothes .

And hydration means the process of absorbing water .
And condensation means water that collects as droplets on a cold surface when humid air is in contact with it.

Dew formation on the leaves and grass in the winter season due to

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. Condensation

  2. Evaporation

  3. Sublimation

  4. Deposition

Show answer
Correct Option: A
Explanation:

Dew forms in the morning on leaves and grass because of the warmer deposits water molecules on the cool leaves.This what is called condensation.
Hence option A is correct.

Evaporation is the process of a substance in:

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. liquid form transitioning into the gas phase

  2. solid form transitioning into the gas phase

  3. liquid form transitioning into the solid phase

  4. None of these

Show answer
Correct Option: A
Explanation:

Evaporation of the substance is the process in which the substance transition from liquid phase to gas phase. Condensation is the process in which gas returns to liquid form. Hence, options A is correct.

The fog appeared on sun glasses when it get in contact with steam

evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

  1. Condensation

  2. Evaporation

  3. Sublimation

  4. None of the above

Show answer
Correct Option: A
Explanation:

The fog appeared on sun glasses when gets in front of hot steam due to condensation.Condensation is the process where the vapor converts into liquid.
Hence option A is correct.