Combination of smoke and fog
Aerosol
CO
Smog
NO
Green house effect is due to ?
CO.
CO2.
NH3.
PO4.
Coral reefs are damaged by
Domestic sewage
Oil spills
Hot water
All these
Witch of the following pair of gases cause green house effect ?
Oxygen & Hydrogen.
Carbon dioxide & Hydrogen.
CO2 & Chloro hydrocarbon.
Nitrogen & Sulfur dioxide.
PAN is seen in :
Respiration.
Cell division.
Electron transport system.
Mitosis.
Human respiratory illness like asthma and cbronic bronchitis is caused by
Gaseous pollutants
Carbonmonoxide
Suspended particulate matters
Most effective device to remove particulate pollutants ?
Use of ESP.
Use of cyclonic separators.
Use of arresters.
Use of filters.
Rain water is :
Slightly acidic.
Strongly acidic.
Natural.
Slightly alkaline.
Which of the following is the most dangerous metal pollutant of automobile exhaust ?
Cadmium
Mercury
Copper
Lead
The amount of oxygen required for oxidation of the biodegradable and non-biodegradable present in water is called :
BOD
Both a and b.
COD
