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प्रश्न
Differentiate between chemical pollution and thermal pollution.
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
Have you ever observed any water pollution in your area? What measures would you suggest to control it?
_________ is used for desalination of brackish water.
Study the picture given below and answer the following questions :
What is a ‘Pollutant’ ? Explain the term.
Give a reason why :
Polluted water causes disease.
Answer the following question in one or two paragraphs
What are the major causes of water pollution?
True or False:
Sources of groundwater pollution include leaking sewer lines, pumping wells, landfills, fertilizer, and sludge.
With reference to the sources of water pollutants answer the following question:
How do the radioactive wastes get into the water bodies?
Give few steps to save water.
What are some solutions to toxic dumping in our oceans?
Name any two water pollutants which are toxic for both plants and animals.
