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प्रश्न
Fill in the blanks :
_______ and ______ are the most common air pollutants.
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उत्तर
NO2 and CO are the most common air pollutants.
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संबंधित प्रश्न
Briefly state the importance of Nitrogen.
Write down the composition of three main gases present in air by volume.
State the utility of oxygen for respiration in living organisms
State four different properties of a compound and a mixture.
Match the following
| 1. | Moving Air | Photosynthesis |
| 2. | Layer in which we live | Troposphere |
| 3. | Stratosphere | Wind |
| 4. | Oxygen | Ozone layer |
| 5. | carbon-di-oxide | Combustion |
The component of air used by green plants to make their food, is ______.
All living things use oxygen for breathing.
______ is used as a substitute for compressed air in tyres.
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
Explain the following observations very briefly
An empty glass in fact is not empty.
