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प्रश्न
The loudness of a sound that a person can withstand without discomfort is about ______.
विकल्प
150 dB
215 dB
30 dB
80 dB
उत्तर
The loudness of a sound that a person can withstand without discomfort is about 80 dB.
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संबंधित प्रश्न
State the cause of accelerated eutrophication
Write critical notes on Eutrophication
Plenty of algal bloom is observed in a pond in your locality.
(a) Write what has caused this bloom and how does it affect the quality of water.
(b) Suggest a preventive measure.
What is Biochemical Oxygen Demand significance in an aquatic ecosystem?
Biomagnification is caused mainly by ______.
The green scum seen in the fresh water bodies is ______.
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 are:
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;
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 |
