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Did you know siderodromophobia is the fear of trains.

Whenever you find whole world against you just turn around and lead the world– Anonymous

Class IX >> Science >> Natural Resources >> A1

Q1	Carbon dioxide is the major component of the atmosphere of __________.
A	Earth
B	Mars
C	Venus
D	Both (B) and (C)

Q2	Plants and animals together form the __________ component of the biosphere.
A	Biotic
B	Living
C	Non Living
D	Both (A) and (B)

Q3	On which planet does life exist?
A	Venus
B	Mars
C	Earth
D	Jupiter

Q4	Water covers __________ about percent of the Earth’s surface.
A	21%
B	29%
C	71%
D	78%

Q5	Biosphere is a life-supporting zone of the Earth where the __________ interact and make life possible.
A	Atmosphere and Hydrosphere
B	Hydrosphere and Lithosphere
C	Lithosphere and Hydrosphere
D	Atmosphere, Hydrosphere and Lithosphere

Q6	The __________, which covers the whole of the Earth like a blanket, is called the atmosphere.
A	Air
B	Sunlight
C	Soil
D	Water

Q7	Eukaryotic cells and many prokaryotic cells need __________ to break down glucose molecules for energy.
A	Carbon dioxide
B	Oxygen
C	Nitrogen
D	Carbon Monoxide

Q8	The air, the water and the soil form the __________ component of the biosphere.
A	Non-living
B	Living
C	Biotic
D	Both (B) and (C)

Q9	__________ is released into the atmosphere during the process of cellular respiration.
A	Oxygen
B	Nitrogen
C	Carbon Dioxide
D	Ozone

Q10	The outer crust of the Earth is called the __________.
A	Lithosphere
B	Mesosphere
C	Asthenosphere
D	Stratosphere

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