A thin layer that connect the earth atmosphere with the space
Thermosphere
Stratosphere
Exosphere
Ionosphere
Green house effect is caused by
U.V Rays
I.R rays
X-rays
R-rays
To remove particulate matter from the air emitted by thermal power station which of the precipitation is used
Smoke precipitator
Particulate pecipitator
Electrostatic precipitator.
Thermal presipitator
The process of coating an iron with zinc is called
Galvanizing
Elector plating
Nitrating
Leaching
Automobiles can reduce the carbon monoxide and other pollutant by the installation of
Tyres
Horns
Double Seats
Catalytic converter
A catalyst used in the preparation of oxygen from H2O2 is
MnO2
CaO2
H2O
H2S
The lowest temperature at which a substance starts burning
Critical temperature
Freezing temperature
Ignition temperature
None of these
The physical method used to separate the components of air
Crystallization
Sublimation
Distillation
Fractional distillation