how will you prove that air support burning
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NCERT Solutions for Class 6th Science: Chapter 15 – Air Around Us
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By Neepur Garg - August 8, 2014


NCERT Solutions for Class 6th Science: Chapter 15 – Air Around Us
National Council of Educational Research and Training (NCERT) Book Solutions for Class 6
Subject: Science
Chapter: Chapter 15 – Air Around Us
Class 6 Science Chapter 15 – Air Around Us NCERT Solution is given below.
Question 1:
What is the composition of air?
Answer:
Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours and some other gases. Air also contains dust particles.
Question 2:
Which gas in the atmosphere is essential for respiration?
Answer:
Oxygen is essential for respiration.
Question 3:
How will you prove that air supports burning?
Answer:
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 burni
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lit a candle it will be glowing in air but as soon as you cover it by glass after some time it will stop glowing..and hence air supports burning
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