1. Air pollution is severe in
1. d) all of these
2. a) are small solid particles and liquid droplets
3. b) ozone
4. c) aerosol
5. c) O3
6. c) both a and b
7. c) 50-60 % of air pollution
8. c) caused only by CO2, CFC, CH4 and NO2 gases
9. c) O3 layer
10. d) reacts with haemoglobin

a) Cities2. Particulate pollutants are
b) Industrialised areas
c) Densely populated areas
d) all of these
a) are small solid particles and liquid droplets3. All are particulate pollutants except
b) liquid droplets in atmosphere
c) are small solid particles released into the atmosphere
d) all of these
a) dust4. Fine organic or inorganic particles suspended in air is called
b) ozone
c) soot
d) smoke
a) particulate pollutant5. Which of the following is a secondary pollutant
b) gaseous pollutant
c) aerosol
d) none of these
a) CO26. Air pollution can be of
b) CO
c) O3
d) SO2
a) natural origin7. Mobile combustion accounts
b) artificial or man made origin
c) both a and b
d) b only
a) 10-20% of air pollution8. The true statement about ‘green house effect’ is that it is
b) 40-50% of air pollution
c) 50-60 % of air pollution
d) 5-10 % of air pollution
a) caused by combination of many gases9. The supersonic jets cause pollution by the thinning of
b) caused by CO2
c) caused only by CO2, CFC, CH4 and NO2 gases
d) None of these
a) CO2 layer10. Carbon mono oxide is a pollutant because
b) SO2 layer
c) O3 layer
d) O2 layer
a) it reacts with O2Learn more
b) it inhibits glycolysis
c) makes nervous system inactive
d) reacts with haemoglobin
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1. d) all of these
2. a) are small solid particles and liquid droplets
3. b) ozone
4. c) aerosol
5. c) O3
6. c) both a and b
7. c) 50-60 % of air pollution
8. c) caused only by CO2, CFC, CH4 and NO2 gases
9. c) O3 layer
10. d) reacts with haemoglobin