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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
Give one example of A water pollutant.
Define pollution. “Industries are pouring poison in water” - Explain
Explain the following :
(i) Eutrophication ;
(ii) Biomagnification
Which one of the following is a "dirty" practice contributing to pollution and seriously needs stoppage by educating public?
Fill in the Blanks:
The release of hot water into rivers causes ______.
How can we reduce water pollution?
What are some solutions to toxic dumping in our oceans?
Contamination of water bodies by human activities is called ______ pollution.
A pond contains clean water. Which of the following activities will produce least pollution of water?
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 ______.
