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
Persons working in cement plants and lime stone quarries are more prone to disease like
asthama
cancer
silicosis
pneumoconiosis
Which of the following statement is wrong?
Polar stratospheric clouds (PSCs) are clouds formed over Antarctica.
Acid 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.
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
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
Ozone in stratosphere is depleted by
C6F6
C6H6Cl6
CF2Cl2
C7F16
Pollutants released from iron and steel industry are
CO2, NO2, H2S
CO, CO2, SO2
CO2, SO2, NO2
CO2, NO, SO2
Global warming may result in
flood
cyclone
decrease in forest productivity
all of the above
Ozone depletion in the stratosphere is mainly caused by
SO2
NO2
NO
Chlorofluorocarbons
Which of the following pollutants is not emitted during volcanic eruptions ?
H2S
Hydrocarbons
CO
