Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
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
Ozone in stratosphere is depleted by
C6F6
C6H6Cl6
CF2Cl2
C7F16
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
Aerosols present in air are
negatively charged
positively charged
neutral
combination of all of the above
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
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
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 .
Main pollutant from automobile exhaust is
CO
CO2
NO
Hydrocarbons
