Which of the following does not cause pollution?

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

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

3. The supersonic jets cause pollution by thinning of:

   A. O3 layer
   B. SO2 layer
   C. O2 Layer
   D. CO2 layer

4. The major cause of pollution is:

   A. Man
   B. Plants
   C. Animals
   D. Man and animals

5. The cause of water pollution?

   A. Smoke
   B. 2, 4-D and pesticides
   C. Automobile exhaust
   D. Aeroplanes

6. Which of the following is the use of lichens in case of pollution?

   A. They treat the polluted water
   B. They act as bio-indicators of pollution
   C. They promote pollution
   D. Lichens are not related with pollution

7. 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

8. The ground water pollution is due to excess of:

   A. DDT is a growth retardant
   B. Pesticides
   C. Minerals
   D. Carbon deposit

9. Thermal pollution in water bodies is caused due to discharge of:

   A. Hot water from power plants
   B. Hot chemicals from industries
   C. Waste from mines
   D. Waste from agricultural fields

10. Air pollution is not caused by:

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