Main pollutant from automobile exhaust is
CO
CO2
NO
Hydrocarbons
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 .
Ultraviolet radiation is absorbed by
exosphere
ionosphere
mesosphere
stratosphere
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
Persons working in cement plants and lime stone quarries are more prone to disease like
asthama
cancer
silicosis
pneumoconiosis
Ozone depletion in the stratosphere is mainly caused by
SO2
NO2
Chlorofluorocarbons
Which of the following pollutants is not emitted during volcanic eruptions ?
H2S
Lead in water can cause
arthritis
hair falling
kidney damage
All 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 .
Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
