Summerize primary information about water pollution.
Summerize primary information about water pollution.
Water is essential for life. Without water there would be no life. We usually take water asgranted for its purity, but we must ensure the quality of water.
Pollution of water originates from human activities. Pollution reaches surface or ground waterthrough different paths.
Easily identified source or place of pollution is called as point source. e.g., municipal andindustrial discharge pipes.
A source of sources of pollution are those where a source of pollution cannot be easilyidentified, e.g., agricultural run off (from farm, animals and crop-lands), acid rain, storm-waterdrainage (from streets, parking lots and lawns), etc.
The major water pollutants and their sources are listed below :
| Pollutant | source |
| Micro-organisms | Domestic sewage |
| Organic wastes |
Domestic sewage, animal excreta and waste, decaying animals and plants, discharge from food processing factories. |
| Plant nutrients |
Chemcial fertilizers |
| Toxic heavy metals |
Industries and chemical factories. |
| Sediments | Erosion of soil by agriculture and strip mining. |
| Pesticides |
Chemicals used for killing insects, fungi and weeds. |
| Radioactive substances |
Mining of uranium containing minerals. |
| Heat |
Water used for cooling in industries. |
Similar Questions
Given below are two statements :
Statement $I$ : If $BOD$ is $4\,ppm$ and dissolved oxygen is $8\,ppm$, then it is a good quality water.
Statement $II$ : If the concentration of zinc and nitrate salts are $5 ppm$ each, then it can be a good quality water.
In the light of the above statements, choose the most appropriate answer from the options given below :
Given below are two statements :
Statement $I$ : If $BOD$ is $4\,ppm$ and dissolved oxygen is $8\,ppm$, then it is a good quality water.
Statement $II$ : If the concentration of zinc and nitrate salts are $5 ppm$ each, then it can be a good quality water.
In the light of the above statements, choose the most appropriate answer from the options given below :
- [JEE MAIN 2023]
Explain tropospheric pollution in $100$ words.
Explain tropospheric pollution in $100$ words.
A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
What are pesticides and herbicides ? Explain giving examples.
What are pesticides and herbicides ? Explain giving examples.
The possibility of photochemical smog formation will be minimum at
The possibility of photochemical smog formation will be minimum at
- [JEE MAIN 2023]