Main pollutant from automobile exhaust is
CO
CO2
NO
Hydrocarbons
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
Ozone depletion in the stratosphere is mainly caused by
SO2
NO2
Chlorofluorocarbons
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
A person dies in atmospheric of CO because it
combines with oxygen present in the body
destroys W.B.C
reduces water in the tissues.
combines with haemoglobin of blood and form stable compound carboxyhaemoglobin and reduces the oxygen carrier capecity of blood .
Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
Global warming may result in
flood
cyclone
decrease in forest productivity
all of the above
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
Formula of tear gas is
COCl2
N2O
C10H5ClN2
none of these
Planting more and more trees helps to
reduce CO2 in the air
increase CO2 in the air
reduce O2 in the air
reduce CO2 and increase O2 in the air
