Environmental Science MCQs

1 / 20

Which of the following devices is suitable for removing finest dust from the air ?

a) Cyclone Separator

b) Electrostatic precipitator

c) Baghouse filter

d) Wet scrubber

2 / 20

Sound becomes hazardous noise pollution at :

a) 30 above dB

b) 80 above dB

c) 100 above dB

d) 120 above dB

3 / 20

Which of the following on inhalation dissolves in blood hemoglobin more rapidly than oxygen ?

a) Sulphur dioxide

b) Carbon monoxide

c) Ozone

d) Nitrous oxide

4 / 20

Which of the following is not a marine pollutant ?

a) Oil

b) Plastics

c) Dissolved oxygen

d) All of these

5 / 20

Which of the following is a major source of thermal pollution in water bodies ?

a) Sewage Treatment Plant

b) Solid waste disposal sites

c) Thermal power plant

d) All of these

6 / 20

Typical modern municipal landfills contain which of the following ?

a) Monitoring wells

b) Impermeable barriers

c) Methane retrieval systems

d) All of these

7 / 20

Which of the following is likely characteristic of hazardous waste ?

a) Ignitability

b) Corrosivity

c) Reactivity

d) All of these

8 / 20

Fluoride pollution mainly affects :

a) Kidney

b) Brain

c) Liver

d) Teeth

9 / 20

Which of the following is a secondary pollutant ?

a) Carbon dioxide

b) Carbon monoxide

c) Ozone

d) Sulphur Dioxide

10 / 20

Disease caused by eating fish inhibiting mercury contaminated water is :

a) Bright's disease

b) Hiroshima episode

c) Mina-mata disease

d) Osteosclerosis

11 / 20

The polluting strength of sewage is usually characterized by its :

a) BOD

b) Nitrogen content

c) Ozone content

d) Eutrophication

12 / 20

The supersonic jets cause pollution by the thinning of :

a) Carbon dioxide layer

b) Sulfur dioxide layer

c) Ozone layer

d) Oxygen layer

13 / 20

Which of the following device is suitable for the removal of gaseous pollutants ?

a) Cyclone Separator

b) Electrostatic precipitator

c) Baghouse filter

d) All of these

14 / 20

Noise is :

a) Loud sound

b) Sound of high frequency

c) Unwanted sound

d) Constant sound

15 / 20

Carbon dioxide content in atmosphere is :

a) 93 %

b) 0.5 %

c) 0.03 %

d) 0.001 %

16 / 20

All are particulate pollutants except :

a) Dust

b) Ozone

c) Soot

d) Smoke

17 / 20

Example of primary pollutant is :

a) Sulphur dioxide

b) Nitrogen dioxide

c) Carbon monoxide

d) All of these

18 / 20

Pollutants resulting from human activities are mainly discharged in :

a) Overpopulated cities

b) Industrial centers

c) Rural areas

d) Both a). and b).

19 / 20

The major photochemical oxidant is :

a) Ozone

b) Hydrogen peroxide

c) Nitrogen oxides

d) Peroxyl Acetyl Nitrate (PAN)

20 / 20

Atmospheric pollution may be caused by :

a) Forest Fire

b) Organic Decay

c) Automobile exhausts

d) None of these

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