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प्रश्न
Differentiate between chemical pollution and thermal pollution.
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उत्तर
(a)
Chemical pollution:
A large number of industrial chemicals which include chemicals from paint, textile & dyestuff industry & various acids & salt solutions enter into the water when discharged as industrial wastes.
Chemical pollutants include — Metallic salt solutions of mercury & lead which cause heavy devastation of marine & plant life.
Agricultural wastes include — Poisonous pesticides namely fungicides & insecticides which may also enter underground water through the soil.
(b)
Thermal pollution:
Certain industries such as the iron & steel industry & numerous chemical plants use large amounts of water for varied functions.
The discharged wastewater after going through technical processes is rendered hot & on entering streams of natural water enhances the growth of harmful biological organisms.
संबंधित प्रश्न
An example of non-biodegradable waste is
A. Vegetable peels
B. Sewage
C. Livestock waste
D. DDT
Study the picture given below and answer the following questions :
Water pollution
Which one of the following is a "dirty" practice contributing to pollution and seriously needs stoppage by educating public?
Name the following
An agricultural pollutant in water
True or False:
Sources of groundwater pollution include leaking sewer lines, pumping wells, landfills, fertilizer, and sludge.
Mention any two sources of water pollution.
We should save water.
Excessive use of chemical fertilizers depletes the soil and causes water pollution.
Classify the most significant sources of water pollutants.
Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of ______.
