Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
Ozone in stratosphere is depleted by
C6F6
C6H6Cl6
CF2Cl2
C7F16
Main pollutant from automobile exhaust is
CO
CO2
NO
Hydrocarbons
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 .
Lead in water can cause
arthritis
hair falling
kidney damage
All of these
Global warming may result in
flood
cyclone
decrease in forest productivity
all of the above
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
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
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
