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प्रश्न
What are the effects of air pollution on human health?
उत्तर
Air pollution is taken as the addition of contaminants like dust, fumes, gas, fog, odor, smoke, or vapor to the air in substantial proportion and duration that may be. harmful to flora and fauna and to property. It causes various diseases related to the respiratory, nervous, and circulatory systems. Smoky fog over cities called urban smog is caused by atmospheric pollution. It proves very harmful to human health. It can also cause acid rain.
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संबंधित प्रश्न
Identify the wrong statement in the following.
Match the List I with List II and select the correct answer using the code given below the lists.
| List I | List II | ||
| A | Stone leprosy | 1 | CO |
| B | Biological magnification | 2 | Green house gases |
| C | Global warming | 3 | Acid rain |
| D | Combination with haemoglobin | 4 | DDT |
Which one of the following river is highly polluted?
Describe the major source of air pollution.
What is the main source of pollution?
Which is the natural source of air pollution?
Which town along the banks of Yamuna is polluted?
In which town, do vehicles emit the most carbon monoxide?
Name the anthropogenic sources of water pollution.
Which of the following are the most polluted rivers of India?
How is the use of plastic bags harmful for environmental degradation? Evaluate it by citing suitable reasons.
What are the sources of dissolved oxygen in water?
A factory was started near a village. Suddenly villagers started feeling the presence of irritating vapours in the village and cases of headache, chest pain, cough, dryness of throat and breathing problems increased. Villagers blamed the emissions from the chimney of the factory for such problems. Explain what could have happened. Give chemical reactions for the support of your explanation.
Oxidation of sulphur dioxide into sulphur trioxide in the absence of a catalyst is a slow process but this oxidation occurs easily in the atmosphere. Explain how does this happen. Give chemical reactions for the conversion of SO2 into SO3.
Assertion (A): If BOD level of water in a reservoir is less than 5 ppm it is highly polluted.
Reason (R): High biological oxygen demand means low activity of bacteria in water.
Which of the following is a natural source of air pollution?
Which of these sources are responsible for water pollution?
- Households
- Industries
- Farms and fields
- Tourism
Match the following and choose the correct answer.
| List I (Pollution) |
List II (Effects) |
| 1. Water Pollution | A. Smog |
| 2. Air Pollution | B. Alkalinity |
| 3. Land Pollution | C. Diarrhoea |
Which of the following is the largest contributor to water pollution in India?
Which of the following is/are the causes of pollution in Yamuna?
- Industrial pollution from Kanpur.
- Domestic waste from Delhi.
- Extraction of water by Haryana and Uttar Pradesh for irrigation.
Hepatitis A is transmitted due to
Explain the causes and consequences of air pollution.
Explain the causes and consequences of water pollution.
Read the given source and answer the questions that follow:
|
The main sources of noise pollution are various factories, mechanized construction and demolition Works, automobiles and aircraft, etc. There may be added periodical but polluting noise from sirens, loudspeakers used in various festivals, programmes associated with community activities. The level of steady noise is measured by sound level expressed in terms of decibels (dB). Of all these sources, the biggest nuisance is the noise produced by traffic, because its intensity and nature depend upon factors, such as the type of aircraft, vehicle, train and the condition of road, as well as, that of vehicle (in case of automobiles). In sea traffic, the noise pollution is confined to the harbour due to loading and unloading activities being carried. Industries cause noise pollution but with varying intensity depending upon the type of industry. Noise pollution is location specific and its intensity declines with increase in distance from the source' of pollution, i.e. industrial areas, arteries of transportation, airport, etc. Noise Pollution is hazardous in many metropolitan and big cities in India. |
- Explain the meaning of noise pollution.
- Why is noise pollution hazardous in metropolitan cities in India?
- "Noise pollution is location specific." Explain with argument.
