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प्रश्न
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.
पर्याय
oxygen
carbon dioxide
nitrogen
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उत्तर
The component of air used in photosynthesis is carbon dioxide and the products of photosynthesis is oxygen.
संबंधित प्रश्न
Describe a simple experiment to show that l/5th of air is oxygen.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
What are the two necessary conditions for rusting of iron?
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 |
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Carbon dioxide, water vapour and energy in the form of heat are evolved during respiration.
Why do we see the sky and air clear and clean after rainfall?
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
List out the uses of nitrogen.
Soda bottle bursts sometimes when it is opened during summer. Why?
The Scottish chemist ______ discovered carbon dioxide is present in air.
