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प्रश्न
Suggest five measures to prevent air pollution.
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उत्तर
Five measures for the prevention of air pollution are:
- By using smokeless sources of energy, like solar energy and electrical energy, in place of conventional fossil fuels.
- By using filters for the. smoke coming out of the chimneys of factories and power plants.
- By using internal combustion engines in vehicles for complete and efficient burning of fuel.
- By locating industries away from residential areas.
- By growing more trees.
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संबंधित प्रश्न
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Match the statements in List 1 with the correct answers in List 2
| List 1 | List 2 | ||
| 1 | An impurity in air | A | Water vapour |
| 2 | The component of air which supports combustion | B | Respiration |
| 3 | The inert component in the air slightly soluble in water | C | Rare gases |
| 4 | The component of air which minimizes the rate of evaporation | D | Sulphur dioxide |
| 5 | The process which involves oxidation of food substance in living organisms | E | Helium |
| 6 | The component of air which finds application in observation balloons | F | Carbon dioxide |
| 7 | The process which involves oxidation of substances, liberating heat and light energy | G | Combustion |
| 8 | The component of air which is heavier than air and fairly soluble in water | H | Nitrogen |
| 9 | The process by which atmospheric carbon dioxide is absorbed by plants resulting in the formation of carbohydrates | I | Photosynthesis |
| 10 | The component of air which is lighter than air and less than 1% in air | J | Oxygen |
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
Name the following:
The product formed when phosphorus burns in oxygen.
List out the uses of carbon dioxide.
Nitrogen is used in the food packaging industry because it _____.
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
______ is responsible for making clouds.
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
Garima observed that when she left her tightly capped bottle full of water in the open sunlight, tiny bubbles were formed all around inside the bottle. Help Garima to know why it so happened?
