Advertisements
Advertisements
प्रश्न
"Determination of Biological Oxygen Demand (BOD) can help in suggesting the quality of a water body." Explain.
उत्तर
Biological Oxygen Demand (BOD) is the amount of dissolved oxygen required by the aerobic organisms to break down the organic material present in the water body at a certain temperature over a certain period of time. Natural water bodies contain a certain level of organic substances that are acted upon and decomposed by microbes.
Determining the BOD of the water body establishes the amount of organic content in it. Presence of more organic wastes increase the biological activity, thus leading to algal blooms. High BOD value indicates more microbial activity, indicating that the water body is polluted.
APPEARS IN
संबंधित प्रश्न
State the cause of accelerated eutrophication
Explain how does the algal bloom eventually choke the water body in an industrial area?
Write critical notes Biological magnification
Write critical notes Groundwater depletion and ways for its replenishment
The expanded form of DDT is ______.
It is a common practice to undertake desilting of the overhead water tanks. What is the possible source of silt that gets deposited in the water tanks?
Match the following and choose the correct option.
| Column I | Column II |
| A. Environment Protection Act | i. 1974 |
| B. Air Prevention & Control of Pollution Act | ii. 1987 |
| C. Water Act | iii. 1986 |
| D. Amendment of Air Act to include noise as an air pollutant | iv. 1981 |
Match the following and choose the correct option
| Column I | Column II | ||
| A. | Environment Protection Act | i. | 1974 |
| B. | Air Prevention & Control of Pollution Act | ii. | 1987 |
| C. | Water Act | iii. | 1986 |
| D. | Amendment of Air Act to include noise as an air pollutant | iv. | 1981 |
Match the following and choose the correct option.
| Column I | Column II | ||
| A. | Environment Protection Act | i. | 1974 |
| B. | Air Prevention & Control of Pollution Act | ii. | 1987 |
| C. | Water Act | iii. | 1986 |
| D. | Amendment of Air Act to include noise as an air pollutant | iv. | 1981 |
Match the following and choose the correct option.
| Column I | Column II | ||
| A. | Environment Protection Act | i. | 1974 |
| B. | Air Prevention & Control of Pollution Act | ii. | 1987 |
| C. | Water Act | iii. | 1986 |
| D. | Amendment of Air Act to include noise as an air pollutant | iv. | 1981 |
The correct matches is;
