Advertisements
Advertisements
प्रश्न
Differentiate between chemical pollution and thermal pollution.
Advertisements
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?
Study the picture given below and answer the following questions :
Water pollution
Explain phenomenon of acid rain.
Write a brief note on acid rain.
Explain the following :
(i) Eutrophication ;
(ii) Biomagnification
Thermal power plants give out a lot of ______ waste water.
______ of the world population does not get safe drinking water.
Name any two water pollutants that are toxic for plants and animals.
Explain about oil spills.
Define the following term:
Oil spills
