Advertisements
Advertisements
प्रश्न
How will you prove that air supports burning?
Advertisements
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
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Give reason:
When water is heated, we see bubbles rising up.
Write ‘true’ or ‘false for the following;
The major component of air is 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.
What happens if the percentage of carbon-dioxide increases in the air?
Why do we see the sky and air clear and clean after rainfall?
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
Aerated water contains
Write about the reaction of nitrogen with non metals.
The second major component of air is oxygen.
