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प्रश्न
How will you prove that air supports burning?
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उत्तर
Take a candle. Place it in a tub. Light the candle and also fill the tub with some water. Cover the candle with an inverted glass. You will find that the candle blows out after burning for some time, and the water level inside the inverted glass rises up to some extent.
The component, oxygen, of air inside the glass is used up in burning. Therefore, water occupies that space. This shows that air supports burning.
संबंधित प्रश्न
Answer the question put against the following constituents of air:
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Statement given below is incorrect. Write the correct statement :
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Give the chemical name of rust.
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
Name the following:
The component of air which does not support combustion.
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
How do the roots of land plants get oxygen for breathing?
How do astronauts breathe when they go beyond the earth’s atmosphere?
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 |
