Advertisements
Advertisements
Question
State three uses of water vapour in the air.
Advertisements
Solution
- Provides moisture for plant and animal growth.
- Determines climatic conditions by providing rain, snow, mist etc.
- Prevents undue drying up of the plant and animal bodies.
APPEARS IN
RELATED QUESTIONS
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
A fuel when used releases least amount of pollutants in the air.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Statement given below is incorrect. Write the correct statement :
Helium gas at low pressure is used for filling electric bulbs.
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
Give reason:
When water is heated, we see bubbles rising up.
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
Why do we see the sky and air clear and clean after rainfall?
Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain ______.
Observe the picture given in figure carefully and answer the following questions.
- What is covering the nose and mouth of the police man?
- Why is he putting a cover on his nose?
- Can you comment on air quality of the place shown in the figure?
