Chemistry MCQS for Class 10
Which of the following is a poisonous gas.
Oxygen
Carbon dioxide
Nitrogen
Ozone
Ozone has a smell
Bitter
Sweat
Rotten egg
None of them
The gas use by plants to perform photosynthesis.
N2
O2
CO2
CO
Which gas acts as a glass wall of a green house?
Hydrogen
sulphur dioxide
Carbon dioxides
Oxygen
The percentage of sun light absorbed by atmospheric gases is.
2%
10%
25%
18%
Atmosphere has regions.
Three
Four
One
Two
The waste products driven out because of the combustion of fossil fuels.
Primary pollutant
None of them
Tertiary pollutant.
Secondary pollutant
Mesophere extend forms 50 km to:
50 km
12 km
60 km
85 km
Which is not a part of flue gas?
H2SO4
Furans
HCl
Dioxins
Cause of global warming is :
CO2 gas
SO2gas
O2gas
NO2gas
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