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प्रश्न
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.
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उत्तर
Helium gas is used for filling weather observation balloons.
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संबंधित प्रश्न
What are the causes of air pollution?
Fill in the blanks :
_______ and ______ are the most common air pollutants.
Define the following:
Combustion.
Complete the statement given below by filling in the blank with the correct word from the words given below
The ______ is a layer which extends up to about 10-50 km. above the earth.
Name the following:
An inert gas which has a low boiling point and is used for producing very low temperatures
Inhaled air contains a large amount of carbon-di-oxide.
How do astronauts breathe when they go beyond the earth’s atmosphere?
Carbon dioxide gas is ______.
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?
Explain the following observations very briefly
An empty glass in fact is not empty.
