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Question
How will you prove that air supports burning?
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Solution
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.
RELATED QUESTIONS
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
State the utility of oxygen for respiration in living organisms
Name three different appliances where air is utilized.
What is the source of carbon dioxide in air?
Write the percentage of the gases present in air.
List out the uses of carbon dioxide.
How do plants and animals maintain the balance of oxygen and carbon dioxide in the air?
List out the uses of nitrogen.
Composition of the component of air ______ from place to place.
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
