Which of the following is a secondary pollution ?.
CO
SO2
HC
Photochemical smog
Brown air in traffic congested city is caused by
CH4
Sulphur dioxides
Hydro carbons
Nitrogen oxides
Which one of have low rate of air pollution
Compressed natural gas
NOx
Hydrocarbons
None of these
Biocides is an example for
Biological water pollutant
Physical water pollutant
Both a and b
Chemical water pollutant
The process of deposition of acid on earth from the atmosphere is called
Air pollution
photochemical smog
Green house effect
Acid deposition
Wind blown acidic gases and particles settle down from the atmosphere on to the earth is called
Wet deposition
Dry deposition
Acid rain
smog
PAN is seen in
Respination
Cell division
Electron transport system
Mitosis
Most effective device to remove particulate pollutants
Use of ESP
Use of cyclonic separators
use of arresters
Use of filters
Which of the following is a secondary pollutant?.
PAN
H2S
NO2
