Question

12. Paragraph based questions:

Read the following paragraph carefully and answer the questions.

Air contains mostly nitrogen and oxygen The remaining 1% (by volume) is shared by argon,

carbon dioxide, other noble gases, oxides of nitrogen and sulphur etc., in the decreasing order.

Dust particles, water vapours and smoke are also present in the air. Air is present in soil and water

also.

(a) Name two major components of air.

(b) Name two substances present in air which are harmful to us.

(c) What is air pollution?

(d) The component of air used by green plants to make their food, is ___________.

(e) List two activities that are possible due to the presence of air.​

Answer 1

I hope it will help you

thank you

Answer 2

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Q 1. According to the paragraph answer the following questions :-

1. Name to major component of air ?

→ Two major component of air are Nitrogen and oxygen .

2. Name two substance present in air which are harmful to us ?

→ Carbon dioxide and Argon

3. What is air pollution ?

→ some harmful substance present in air contaminates air is called air pollution .

4. The component of air used by green plant to make their food is Carbon dioxide .

5. list two activities that are possible due to presence of air ?

• Breathing

• combustion

→ Know more :-

Air :- air is a mixture of many gases .Example carbon dioxide, oxygen , helium , argon etc.

atmosphere :- the earth is surrounded by an envelope of air called atmosphere .

Atmospheric pressure :- the atmosphere exerts pressure on Earth due to weight of air this is known as atmospheric pressure .

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~Answer completed~⠀⠀

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