Chemistry MCQS for Class 10
Which factor determines the severity of a pollutant?
concentration
All of them
Persistence
Chemical nature
Cause of global warming is:
NO2gas
SO2gas
O2gas
CO2 gas
The pH of acid rain.
3
4
2
5
Which gas is produce by the electrical lightening of air.
NO
CO2
SO3
SO2
___________ is not green house effect.
Increase of food chain
Increase of sea level
increase atmospheric pressure
Increase of flood risks
The region of ozone decomposition in stratosphere is.
50 km
20 km
40 km
30 km
The percentage of SO2 released by the combustion of coal and petroleum product.
60%
70%
40%
80%
PAN stands for
Proxy acetyl nitrite
Proxy acetyl nitrate
Poly aniline nitrate
Poly acetyl nitrite
Catalytic converters convert.
CO2 to CO
N2 to NO
N2to NO2
CO to CO2
Ultraviolet radiations can causes.
Skin cancer
Night blindness
Hepatitis
Asthma
Infrared radiation emitted by the earth are absorbed by?
CO2,H2O
CO2,N2
O2,CO2
N2,O2
Iron and steel structure are damaged by.
Carbon dioxide
Methane
Sulphur dioxide
Carbon monoxide
Which one of the following is not an air pollutants?
Nitrogen oxide
Carbon dioxide
Ozone
Nitrogen
The gas used by animals to perform respiration.
N2
Cl2
O2
SO2
At which region all weather occurs?
Troposphere
Thermosphere
Stratosphere
Mesosphere
pH of acid rain is:
7-Jun
2-Jan
5-Apr
5-Jul
The envelope of different gases around the earth is called.
Lithosphere
Hydrosphere
Atmosphere
Brosphere
Which gas protects the Earth’s surface from ultraviolet radiations?
O3
CO2
CO
N2
Which is not an air pollutant?
CO
CO2
NH3
SO2
Our planet earth consists of ____________ natural Spheres.
4
8
1
6
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