Chemistry MCQS for Class 10
A group of gases that maintains temperature of atmosphere is.
Nitrogen and carbon dioxide
Thermosphere
Troposphere
Carbon dioxide and water vapours
Global warming is because of.
Absorption of infrared radiation coming from sun.
Absorption of infrared Ultraviolet coming from the sun.
Emission of ultraviolet radiation from the earth’s surface.
Absorption of infrared radiation emitted by earth surface.
Just above the Earth’s surface is
Mesosphere
Troposphere
Stratosphere
Theremosphere
At the height 880120 km from earth’s surface is.
Troposphere
Thermosphere
Mesosphere
Stratosphere
Normally rain water is weakly acidic because of.
NO2gas.
SO3 gas.
CO2gas.
SO2gas.
A strange bitter smell noticed near photocopiers is of:
SO2
O2
H2S
O3
Atmosphere is divided into;
4 regions
3 regions
5 regions
6 regions
Effects of ozone depletion are following except the one.
Increases crops production
Increases infectious diseases
Can cause climatic changes.
Can cause skin cancer
Which pollutant is not found in car exhaust gases?
O3
NO2
CO
SO3
Which gas saves the surface of earth from ultra violet radiation?
CO2
O3
N2
CO
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