To check sonic booms, control should be exerted over:

Related Mcqs:

1. Sonic booms’ refer to:

   A. Shock waves
   B. Noise of traffic
   C. Noise of siren
   D. Unhearable sound

2. Contour binding is done to check:

   A. Rill erosion
   B. Gully erosion
   C. Ravine formation
   D. Sheeterision

3. An important agrostological technique to check soil erosion in the initial stages is:

   A. Ley farming
   B. Land retirement
   C. Basin listing
   D. Contour farming

4. Control measures to check tree damages are:

   A. Use of resistant varieties
   B. Physical
   C. Biotechnical
   D. Biological
   E. All of the above

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 one is not dangerous for life?

   A. Biopollutants
   B. Ozone layer
   C. Nuclear blast
   D. Deforestation

7. If there were no CO2 in the earth’s atmosphere, the temperature of earth’s surface would have been:

   A. same as present
   B. Less than the present
   C. Higher than the present
   D. Dependent on the amount of O2 in the atmosphere

8. The noise created at the launching of space rocket measures around:

   A. 120 db
   B. 150 db
   C. 180 db
   D. 240 db

9. Which of the following air pollutant is carcinogenic?

   A. Ethylene
   B. 3.4 Benzpyrene
   C. N2O
   D. PAN

10. 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