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प्रश्न
What are the various constituents of domestic sewage?
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उत्तर
The various constituents of domestic sewage include a rich amount of carbon, organic phosphorus, and nitrogenous compounds. It also contains decomposable organic matter, several pathogenic organisms, and putrescible materials.
संबंधित प्रश्न
Public all over India is very much concerned about the deteriorating air quality in large parts of North India. Alarmed by this situation the Resident’s Welfare Association of your locality organized an awareness programme entitled “Bury not burn”. They invited you, being a biology student to participate.
- How would you justify your arguments that promote burying and discourage burning? (Give two reasons.)
- With the help of flow charts, one for each practice depicts the chain of events that follow.
Lichens indicate SO2 pollution because they ______.
Algal bloom results in ______.
A high Biological oxygen demand (BOD) indicates that ______.
The polluting strength of sewage is usually characterized by its ______.
World’s most problematic aquatic weed is ______.
Which of the following exhibits biomagnification?
Which one of the following impurities is easiest to remove from wastewater?
Algal blooms impart a distinct colour to water due to ______.
What is cultural eutrophication?
Name an industry which can cause both air and thermal pollution and as well as eutrophication.
What is an algal bloom?
Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body.
How has DDT caused decline in bird population?
