Effect of pollution is first marked on:

Related Mcqs:

1. The effect of pollution is first and most marked on:

   A. Natural flora of a place
   B. Natural balance of our environment
   C. Natural geo-chemical cycles
   D. All the above three

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. Most harmful heavy metals causing water pollution:

   A. Pb, Hg, Cr, Cd
   B. P,Mn,B,Mg
   C. N,K,Mo
   D. Zn,Mo,Mg,Ag

7. Maximum noise pollution in residential areas is due to:

   A. Traffic sirens
   B. Sirens and loud speakers
   C. Kitchen appliances, radio and TV
   D. Industries

8. The CFC pollution sources include:

   A. Jet air crafts only
   B. Fire extinguishers and jet air crafts
   C. Refrigerators and jet air crafts
   D. All of these

9. With the increase in water pollution, the BOD:

   A. Decreases
   B. Increases
   C. Remains the same
   D. Is no measure of pollution

10. Air pollution is maximum caused by:

    A. Sewage and industrial effluents
    B. Household detergents and pesticides
    C. Automobile exhausts and chemicals from industry
    D. Sewage and pesticides