If the solar radiation is less the photo chemical smog formation becomes incomplete, the air is called :
Grey air.
Brown air.
Green air.
Both b and c.
Coral reefs are damaged by
Domestic sewage
Oil spills
Hot water
All these
Rain water is :
Slightly acidic.
Strongly acidic.
Natural.
Slightly alkaline.
Major source of methane in India is ?
Sugarcane fields.
Rice fields.
Wheat fields.
Fruit orchards.
which one of the following is highly poisonous to all animals.
CH4
SO2
HC3
CO
The amount of oxygen required for oxidation of the biodegradable and non-biodegradable present in water is called :
BOD
Both a and b.
COD
Combination of smoke and fog
Aerosol
Smog
NO
Taj Mahal at Agra may be damaged by
H2SO4
Chlorine
Sulphurdioxide
Oxygen
Most effective device to remove particulate pollutants ?
Use of ESP.
Use of cyclonic separators.
Use of arresters.
Use of filters.
Volcanic eruption is a type of
Natural pollution
water pollution
Industrial pollution
None of these
