Environmental Pollution
Test your knowledge of environmental pollution, including air and water pollutants, their effects on living organisms, biological magnification, greenhouse gases, and methods of pollution control.
Questions
Which of the following do(es) not cause global warming?
- Halogens
- Chlorofluorocarbons
- Sulphur dioxide
- Methane
- All of the above
Biological magnification occurs in environment as a result of water pollution. Which of the following factors may be involved in biological magnification?
- Chlorinated hydrocarbons
- Oil spills
- Sewage water
- Chlorofluorocarbons
CO reduces the oxygen-carrying capacity of blood. Which of the following gases can also cause the same harmful effect on humans?
- Sulphur oxide
- Carbon dioxide
- Sulphur trioxide
- Ozone gas
Which of the following air pollutants can accumulate in the bones, distort RBCs and affect the oxygen-carrying capacity of blood?
- Peroacetyl nitate (PAN)
- Carbon dioxide
- Lead
- Sulphur dioxide
Tobacco smoke is a complex mixture of several compounds. Which of the following has shown probable evidence of carcinogenicity in humans?
- Dibenzacridine
- Benzo(a)pyrene
- Hydrazine
- Lead
Which of the following is false about PCBs (polychlorinated biphenyls)?
- They are probable human carcinogens.
- PCBs cause developmental effects.
- PCBs cause blisters on skin.
- Eating fish is the major route of exposure to PCBs.
Hydrocarbons and nitrogen oxide combine in the presence of ultraviolet rays to form a harmful air pollutant. It is known as
- mist
- photochemical smog
- nitrogen dioxide
- peroxyacetyl nitrate
Byssinosis (brown lung disease) is a respiratory disease. Which of the following cause(s) this disease?
- Phosphate fertilisers
- Asbestos dust
- Cotton dust
- Pesticides
Which of the following pollutants is controlled by electrostatic precipitation?
- Aerosol pollutant
- Dust pollutant
- SO2 pollutant
- Pesticide pollutant
Ground level ozone is a toxic air pollutant. It is formed by the reaction of volatile organic compounds with
- sulphur dioxide
- nitrogen oxide
- carbon dioxide
- carbon monoxide
To control carbon monoxide levels in air, plants capable of fixing carbon monoxide are grown. Which of the following plants are capable of fixing carbon monoxide?
a. Phaselous vulgaris
b. Daucs carota
c. Magnifera indica
d. Vitis vinifera
- Only a and b
- Only c and d
- Only a, b and d
- Only b, c and d
Which of the following gases do(es) not contribute to the greenhouse effect?
- Water vapour
- Nitrous oxide
- Carbon monoxide
- Chlorofluorocarbons
Algal bloom in the coastal areas due to increased nutrient loading from human activities is known as
- black tide
- blue tide
- pink bloom
- red tide
Which of the following is the effect of siltation in water pollution?
- Reduction in primary production
- Excessive growth of phytoplanktons
- Heavy mortality among fishes
- Rapid multiplication of dinoflagellates
Which of the following air pollutants is/are produced by burning of plastic?
- CFCs (chlorofluorocarbons)
- PCBs (polychlorinated biphenyls)
- PAN (peroxyacetyl nitrate)
- NO2 (nitric oxide)