Question

Name the major component of air.
Which of the two is present in lesser amount in air : oxygen or nitrogen
Apart from nitrogen and oxygen, name two other gases present in a
What name is given to the layer of air which surrounds the earth?
State whether the following statements are true or false :
(a) The composition of air is always exactly the same.
(b) Nitrogen present in air supports the process of burning.​

Answer 1

Answer:

major components of air are Nitrogen , oxygen and carbon dioxide

oxygen is present in lesser amount then nitrogen

carbon dioxide and water vapour are also present in air

ozone layer of atmosphere surround the earth

a) false

b) false

Explanation:

Answer 2

Answer:

1. Components of air

• Nitrogen(78%)
• Oxygen(21%)
• Argon(1%)
• Carbon dioxide (0.03)
• and some water vapours

Explanation:

1. Oxygen is present in the lesser amount.
2. Apart from Nitrogen and Oxygen other two gases are Argon and Carbon dioxide.
3. The layer is Atmosphere
4. (a) False.The components of air not remain same.
5. (b) False. Oxygen help in the burning process.