Environmental Science MCQs

1 / 20

Which material accounts for the greatest percentage of the weight of solid waste ?

a) Food waste

b) Plastic

c) Paper

d) Yard waste

2 / 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

3 / 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

4 / 20

Which of the following are likely to be present in photochemical smog ?

a) Sulphur dioxide

b) Photochemical oxidants

c) Volatile organic compounds

d) All of these

5 / 20

Carbon monoxide is a pollutant because :

a) It reacts with oxygen

b) It inhibits glycolysis

c) Makes nervous system inactive

d) Reacts with hemoglobin

6 / 20

The major photochemical oxidant is :

a) Ozone

b) Hydrogen peroxide

c) Nitrogen oxides

d) Peroxyl Acetyl Nitrate (PAN)

7 / 20

Sound becomes hazardous noise pollution at :

a) 30 above dB

b) 80 above dB

c) 100 above dB

d) 120 above dB

8 / 20

Which of the following is likely characteristic of hazardous waste ?

a) Ignitability

b) Corrosivity

c) Reactivity

d) All of these

9 / 20

Carbon dioxide content in atmosphere is :

a) 93 %

b) 0.5 %

c) 0.03 %

d) 0.001 %

10 / 20

The supersonic jets cause pollution by the thinning of :

a) Carbon dioxide layer

b) Sulfur dioxide layer

c) Ozone layer

d) Oxygen layer

11 / 20

Disease caused by eating fish inhibiting mercury contaminated water is :

a) Bright's disease

b) Hiroshima episode

c) Mina-mata disease

d) Osteosclerosis

12 / 20

The densest of all the atmosphere layers is :

a) Troposphere

b) Stratosphere

c) Mesosphere

d) Ionosphere

13 / 20

Example of primary pollutant is :

a) Sulphur dioxide

b) Nitrogen dioxide

c) Carbon monoxide

d) All of these

14 / 20

Biological oxygen demand (BOD) measures :

a) Industrial Pollution

b) Air Pollution

c) Water Pollution

d) Dissolved oxygen needed by microbes to decompose organic waste

15 / 20

Pollutants resulting from human activities are mainly discharged in :

a) Overpopulated cities

b) Industrial centers

c) Rural areas

d) Both a). and b).

16 / 20

Typical modern municipal landfills contain which of the following ?

a) Monitoring wells

b) Impermeable barriers

c) Methane retrieval systems

d) All of these

17 / 20

Fluoride pollution mainly affects :

a) Kidney

b) Brain

c) Liver

d) Teeth

18 / 20

All are particulate pollutants except :

a) Dust

b) Ozone

c) Soot

d) Smoke

19 / 20

Which of the following is a secondary pollutant ?

a) Carbon dioxide

b) Carbon monoxide

c) Ozone

d) Sulphur Dioxide

20 / 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

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