Formula of tear gas is
COCl2
N2O
C10H5ClN2
none of these
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 capacity of blood.
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 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.
Pollutants released from iron and steel industry are
CO2, NO2, H2S
CO, CO2, SO2
CO2, SO2, NO2
CO2, NO, SO2
Lead population is mainly caused by
sewage
insecticide
leaded gasoline
None of these
Ultraviolet radiation is absorbed by
exosphere
ionosphere
mesosphere
stratosphere
Aerosols present in air are
negatively charged
positively charged
neutral
combination of all of the above
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
