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प्रश्न
Study the picture given below and answer the following questions :
What is a ‘Pollutant’ ? Explain the term.
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उत्तर
Pollutant is any such constituent which causes pollution.
There are two types of pollutants like
(a) Biodegradable - Which biologically degraded. Eg. Crop waste, vegetable wastes
(b) Non-biodegradable - Which never biologically degraded. Eg. Polythene bags
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संबंधित प्रश्न
Do you know of any activity which may be polluting this water source?
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.
Give an account of various sources and harmful effects of water pollution.
List the three major sources of water pollution
We should save water.
Do not throw plastic garbage when you go near beaches.
Which of the following is a water pollutant?
Which of the following is not a way to conserve water?
Read the paragraph and answer the questions following it.
| Water is essential for life. Without water there would be no life. We usually take water as granted for its purity, but we must ensure the quality of water. Pollution of water originates from human activities. Through different paths, pollution reaches to groundwater. Easily identified source or place of pollution is called as point source, e.g. municipal and industrial discharge pipes, where pollutants enter the water source. Non-point sources of pollution are those where a source of pollution cannot be easily identified, e.g. agricultural run-off, acid rain, etc. |
- How do you classify the various sources of water pollution?
- What are the point sources of water pollution?
- Name any two non-point sources of water pollution?
Water sample is called cleanest on the basis of which one of the BOD values is given below.
