The concentration of SO2 in the atmosphere is around:

Related Mcqs:

1. Presence of SO2 in atmosphere is indicated by:

   A. Mosses
   B. Liver worts
   C. Lichens
   D. Ferns

2. The SO2 is returned to the atmosphere by:

   A. Metabolism of producers
   B. Metabolism of consumers
   C. Both (a) & (b)
   D. Combustion of fuel

3. Acid rain is mainly caused by increased concentration (in atmosphere) of:

   A. Ozone and dust
   B. NH3 and SO3
   C. CO and SO3
   D. NO2 and SO2

4. Pollution of SO2 destroy:

   A. Fungi
   B. Lichen
   C. Algae
   D. Fishes

5. Some reliable indicators of air pollutants (SO2 and noxious gases) are:

   A. Ferns and Cycas
   B. Green algae and aquatic liverworts
   C. Lichens and mosses
   D. Neem’ tree and Eichhornia

6. The component of a living cell affected by the pollutant SO2 is:

   A. Nucleus
   B. All cell membrane system
   C. Cell wall
   D. Plasmodesmata

7. The particulate matter dispersed in the atmosphere is:

   A. Gaseous
   B. Mainly gaseous
   C. Non-gaseous
   D. Mainly non-gaseous

8. The zone of atmosphere that lies near the ground is:

   A. Troposphere
   B. Stratosphere
   C. Homosphere
   D. Heterosphere

9. The lowest temperature in the atmosphere is recorded at:

   A. Mesopause
   B. Tropopause
   C. Stratopause
   D. All of these

10. What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer?

    A. Sulphur di-oxide
    B. Carbon di-oxide
    C. Nitrogen oxides and fluoro-carbons
    D. Carbon monoxide