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प्रश्न
Fill in the blank
The supporter of combustion in air is _____.
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उत्तर
The supporter of combustion in air is oxygen.
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संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Name the following:
The product formed when phosphorus burns in oxygen.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
Give word equation for the following conversion:
Nitric oxide to nitrogen dioxide
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
Write a note on nitrogen.
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 |
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
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?
