In big cities, air pollution is mainly due to:

Related Mcqs:

1. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

2. Certain cities of Pakistan have been subjected to tremendous air pollution due to increased:

   A. Urbanization
   B. Mechanization
   C. Industrialization
   D. Civilization

3. The main cause of pollution in metro cities is due to:

   A. Industries
   B. Automobiles
   C. Home fuel
   D. Trees

4. The sea water gets pollution mainly due to:

   A. Industrial waste
   B. Oil spills
   C. Death of marine fauna
   D. None of these

5. Photochemical smog formed in congested metropolitan cities mainly consists of:

   A. Ozone, peroxyacetyl nitrate and No2
   B. Smoke, peroxyacetyl nitrate and SO2
   C. Hydrocarbons, SO2 and CO2
   D. Hydrocarbons, ozone and SO2

6. The percentage of air pollution caused due to smoke:

   A. 10-15%
   B. 15-20%
   C. 20-25%
   D. 2-5%

7. The river Periyar gets pollution mainly from:

   A. Tanneries
   B. Paper factories
   C. Chemical factories
   D. Sugar mills

8. The light of cities is reduced in comparison to villages due to the presence of:

   A. SO2 and SO3
   B. SO2 and oxides of nitrogen
   C. Hydrocarbons and N2O
   D. Suspended particulate matter

9. Air pollution effects are usually found on:

   A. Leaves
   B. Flowers
   C. Stems
   D. Roots

10. Air pollution is not caused by:

    A. Thermal power plant
    B. Diesel engine
    C. Hydroelectric power station
    D. Pollen grain