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प्रश्न
Fill in the blanks :
_______ and ______ are the most common air pollutants.
उत्तर
NO2 and CO are the most common air pollutants.
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संबंधित प्रश्न
Classify Carbon dioxide. Also give a balanced equation to prepare it.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
Why is air considered as a mixture?
What happens if the percentage of carbon-dioxide increases in the 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.
Why do traffic assistants wear a mask on duty?
All living things use oxygen for breathing.
Match the following:
| 1. | More industrial cities | a. | dust particles |
| 2. | Coastal areas | b. | Humidity |
| 3. | Rainy season | c. | Carbon dioxide |
| 4. | Windy places | d. | water vapour |
______ is used as a substitute for compressed air in tyres.
