EASY
Earn 100

Explain any three applications of evaporation.

Important Questions on Physical Environment-Heat

EASY
"Spirit kept in an open watch glass is converted into gaseous state even at room temperature". Explain.
EASY
Condensation takes place when water becomes ice.
MEDIUM
When you take in a deep breathe and then exhale close to a mirror why the mirror gets foggy?
MEDIUM

What do you understand by 'condensation'? 

HARD
When you take out a cold water bottle from a refrigerator and keep it at room temperature, after some time you observe some drops of water on the outer surface of the water bottle. Where does this water come from? 
MEDIUM

State True or False. If false, correct the statement.

The process of converting a substance from solid to gas is called condensation.

EASY
What is formed when water vapour condenses on dust particles in the air?
MEDIUM
Name two ways of change of liquid state to the vapour state and distinguish them.
EASY
The common salt is obtained from sea water by process of condensation. 
EASY
Why only on winter we see dew on leaves of plant?
EASY
Why does the water vapour condense when it reaches high up in the atmosphere?
MEDIUM

Consider the following factors on which a phenomenon (X) depends. By studying all the given factors, choose the option which correctly describe phenomenon (X).

1. Surface area 2. Temperature 3. Humidity 4. Wind speed

The phenomenon (X) is _____.

MEDIUM
Give two applications of evaporation.
EASY

Write the quadrants in which the following points lie:

-4,7

EASY
What do we see on the outer surface of the glass containing ice-chilled water?
EASY
Name the weather condition that is formed when water vapour condenses on dust particles in the air.
MEDIUM

Look at the picture and explain the reason behind what is happening.

Question Image

EASY
When you take out a cold water bottle from a refrigerator and keep it at room temperature, after some time you observe some drops of water on  the outer surface of the water bottle. Where does this water come from?