MEDIUM
9th CBSE
IMPORTANT
Earn 100

The ozone layer is getting depleted because of
(a)Excessive use of automobiles
(b)Excessive formation of industrial units
(c)Excessive use of man-made compounds containing both fluorine and chlorine
(d)Excessive deforestation

50% studentsanswered this correctly

Important Questions on Natural Resources
EASY
9th CBSE
IMPORTANT
”Ozone-hole” means

MEDIUM
9th CBSE
IMPORTANT
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?

EASY
9th CBSE
IMPORTANT
Which one of the following factors does not lead to soil formation in nature?

EASY
9th CBSE
IMPORTANT
Major source of mineral in soil is the

EASY
9th CBSE
IMPORTANT
The process of nitrogen-fixation by bacteria does not take place in the presence of

EASY
9th CBSE
IMPORTANT
Biotic component of biosphere is not constituted by

EASY
9th CBSE
IMPORTANT
Total Earth’s surface covered by water is

MEDIUM
9th CBSE
IMPORTANT
Choose the correct sequence.
