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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
What are the major causes of water pollution? Explain.
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 :
What is a ‘Pollutant’ ? Explain the term.
Which one of the following is a "dirty" practice contributing to pollution and seriously needs stoppage by educating public?
Name two heavy metals from industries that pollute water.
With reference to the sources of water pollutants answer the following question:
In what way does the industrial waste pollute water?
We should save water.
Usage of chemical pesticides and fertilisers causes ________ pollution.
Write notes on the following:
Algal Bloom
Microplastics can be found in almost every freshwater source.
