EASY
9th CBSE
IMPORTANT
Earn 100

What is the percentage of oxygen in air?
(a)29
(b)71
(c)46
(d)21

50% studentsanswered this correctly

Important Questions on Natural Resources
EASY
9th CBSE
IMPORTANT
The role of Azotobacter in the soil is

MEDIUM
9th CBSE
IMPORTANT
The ozone layer is contained within which layer of the atmosphere

MEDIUM
9th CBSE
IMPORTANT
The rigid, outer part of the earth which consists of the crust and upper mantle is called _______.

EASY
9th CBSE
IMPORTANT
Which gas, by volume, holds the highest percentage in the composition of dry air on earth?

EASY
9th CBSE
IMPORTANT
On the basis of their continued availability, how will you classify the resources?

EASY
9th CBSE
IMPORTANT
Which instrument measures the pressure of the atmosphere?

MEDIUM
9th CBSE
IMPORTANT
Which gas is filled in weather observation balloons?

MEDIUM
9th CBSE
IMPORTANT
What is the process of seeping water into ground known as?
