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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 an appropriate biological/technical term for the following:
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Water pollution
Study the picture given below and answer the following questions :
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Study the picture given below and answer the following questions :
Mention the impact of this pollution on human health.
List two major harmful effects of the following:
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List the three major sources of water pollution
With reference to the sources of water pollutants answer the following question:
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Explain the different ways by which water gets polluted.
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Name any two water pollutants that are toxic for plants and animals.
