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प्रश्न
A fuel when used releases least amount of pollutants in the air.
पर्याय
sulphur dioxide
chlorofluorocarbon
smoke
CNG
उत्तर
CNG
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संबंधित प्रश्न
Fill in the blank :
________ is the most abundant inert gas present in air.
Write ‘True’ or ‘False’ in front of following statement.
The catalyst used in laboratory preparation of oxygen gas from hydrogen peroxide gas is magnesium oxide
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
Name the following:
The active component of air which supports combustion and is used up in burning
Why is air considered as a mixture?
Write the percentage of the gases present in air.
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
The amount of water vapour in the air is more in windy places than in other areas.
Explain the following observations very briefly
An empty glass in fact is not empty.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere
nitrogen
