Main pollutant from automobile exhaust is
CO
CO2
NO
Hydrocarbons
Ozone in stratosphere is depleted by
C6F6
C6H6Cl6
CF2Cl2
C7F16
Aerobic oxidation is caused by
aerobic bacteria in presence of excess of oxygen
aerobic bacteria in absence of oxygen
anaerobic bacteria in presence of oxygen
anaerobic bacteria in absence of oxygen
BHC and DDT act as
carcinogens
allergens
asthematic agents
all of these
Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
Which of the following pollutants is not emitted during volcanic eruptions ?
SO2
H2S
Which of the following statement is false?
London smog is oxidising in nature
London smog causes bronchitis
London smog is formed in winter
London smog contains H2SO4 droplets
Pollutants released from iron and steel industry are
CO2, NO2, H2S
CO, CO2, SO2
CO2, SO2, NO2
CO2, NO, SO2
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
Lead in water can cause
arthritis
hair falling
kidney damage
All of these
