Question

Topic 1 (Components of Air)
Fill in the Blanks:-
1 Fill in the blanks with the suitable words:
(a) The envelope of air around the earth is known as
(b) Air is a.................of many gases.
(c) The presence of..............air is important for the water cycle in nature.
(d) The burning can occur only in the presence of................
(e) The major part of air is.........​

Answer 1

Answer:

a) atmosphere ( also known as blanket of air )

b) composition

c) hydrogen

d) O2 ( oxygen)

e) nitrogen ( N2 )

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Answer 2

Answer:

1) The envelope of air around the earth is atmosphere.

2) Air is a mixture of many gases.

3) The presence of hydrogen air is important for the water cycle in nature.

4) The burning can occur only in the presence of carbon dioxide.

5) The major part of air is nitrogen.