1. Which is the renewable exhaustible natural energy resource??
   Question grade : 1

1/30
Coal
Petroleum
Kerosene
Biomass

2. The term ecosystem was proposed by ____ .?
   Question grade : 1

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Lindeman
AG Tansley
Grinnel
Turesson

3. What percentage of oxygen and carbon dioxide exists in the ecosystem??
   Question grade : 1

3/30
20.95% and 0.004%
20.95% and 0.04%
20.0% and 0.40%
20.0% and 0.44%

4. Acid rain is a result of:?
   Question grade : 1

4/30
Excess amount CO2
Excess amount of NH3
Excess amount of SO2 and NO2
Excess carbon monoxide

5. The greenhouse effect in the atmosphere is produced due to:?
   Question grade : 1

5/30
Absorption and re-emission of infrared radiation by the atmosphere
Absorption and re-emission of ultra violet radiation by the atmosphere
Absorption and re-emission of visible light by the atmosphere
Absorption and re-emission of visible light by clouds

6. The reason for soil pollution is ____.?
   Question grade : 1

6/30
Ozone
Aerosol
PAN
Acid rain

7. Which of the following gas affects human health by reducing the blood’s ability to carry oxygen to different parts of the body??
   Question grade : 1

7/30
Carbon monoxide
Carbon dioxide
Sulphur dioxide
Nitrous dioxide

8. Nitrogen oxide affects human health by__________?
   Question grade : 1

8/30
Causing irritation to the eyes and skin
Aggravating asthma problem
Decreasing blood’s ability to transport oxygen
None of the above

9. The air pollutants are mainly classified as____________?
   Question grade : 1

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Point source and non-point source
Primary and secondary pollutants
Natural or anthropogenic pollutants
None of the above

10. The best way to dispose plant waste is___________?
    Question grade : 1

10/30
Burning
Composting
Dumping in a hilly area
Incineration

11. Montreal Protocol signed in 1987 was signed to_______?
    Question grade : 1

11/30
Phase out the use of CFC’s which cause depletion of the ozone layer
Reduces the greenhouse effect
Protect endangered species
Ban nuclear testing in tropical oceans

12. Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone??
    Question grade : 1

12/30
Increased skin cancer
Reduced immune system
Increased liver cancer
Damage to eyes

13. Which of the following units is used to measure the intensity of noise??
    Question grade : 1

13/30
Decibel
Phon
Hz
Watts/m

14. Human ear is most sensitive to noise in which of the following frequency range??
    Question grade : 1

14/30
1-2 kHz
10-12 kHz
100-500 Hz
13-16 kHz

15. Maximum soot is released from_________?
    Question grade : 1

15/30
Petrol vehicles
Diesel Vehicles
CNG vehicles
Thermal power plants