Related Mcqs:

1. Effect of pollution is first marked on:

   A. Micro-organisms
   B. Green vegetation of an area
   C. Food crop
   D. None of these

2. Effect of pollutions first and most marked on:

   A. Natural balance of our ecological environment
   B. Natural gaseous cycle
   C. Natural geochemical cycle
   D. Natural flora of a place

3. 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

4. Wave erosion is more prevalent and well marked:

   A. Along rivers
   B. At the sea shore
   C. In water falls
   D. In all these places

5. Positive pollution of soil is due to:

   A. Excess use of fertilizers
   B. Addition of wastes on soil
   C. Reduction in soil productivity
   D. All of these

6. Which of the following does not cause pollution?

   A. CO2
   B. SO2
   C. H2
   D. CO

7. In big cities, air pollution is mainly due to:

   A. Burning of fossil fuel
   B. Thermal power plants
   C. Sewage
   D. Suspended particles

8. Air pollution is caused by:

   A. Automobile exhausts
   B. Radioactive substances
   C. Smoke
   D. All of the above

9. Photochemical smog is related to the pollution of:

   A. Soil
   B. Water
   C. Noise
   D. Air

10. If water pollution continues at its present rate, it will eventually:

    A. Make oxygen molecules unavailable to aquatic life
    B. Make nitrates unavailable to aquatic life
    C. Prevent precipitation
    D. Stop the water cycle