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 .
Pollutants released from iron and steel industry are
CO2, NO2, H2S
CO, CO2, SO2
CO2, SO2, NO2
CO2, NO, SO2
Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
Which of the following pollutants is not emitted during volcanic eruptions ?
SO2
H2S
Hydrocarbons
CO
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
Which of the following statement is wrong ?
Polar stratospheric clouds (PSCs) are clods formed over Antarctica.
Acis rain dissolves heavy metals such as cu ,Pb,Hg and Al from soil,rocks and sediments.
H2SO4 is major contributor to acid rain .HNO3 ranks second and HCl third in this respect
Fishes grow as well in warm as in cold water .
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
BHC and DDT act as
carcinogens
allergens
asthematic agents
all of these
Aerosols present in air are
negatively charged
positively charged
neutral
combination of all of the above
Formula of tear gas is
COCl2
N2O
C10H5ClN2
none of these