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प्रश्न
What is the difference between pollution and pollutants?
उत्तर
| Pollution | Pollutant |
| (i) Pollution is the addition of unwanted, harmful substances in the atmosphere in a substantial amount over a considerable period of time. | (i) Pollutants are substances that are unwanted, and harmful. They make the environment polluted. |
| (ii) It is the degradation of the quality of the environment. | (ii) They degrade the quality of the environment. |
| (iii)Pollution is caused by pollutants. | (iii) Addition of pollutants is the cause of pollution. |
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संबंधित प्रश्न
Define environmental chemistry.
Identify the wrong statement in the following.
What is degradable pollutants?
Which one of the following river is highly polluted?
Describe the major source of air pollution.
What are the effects of air pollution on human health?
Describe the nature of water pollution in India.
Which town along the banks of Yamuna is polluted?
Which of the following naturàl activities is responsible for air pollution?
How is the use of plastic bags harmful for environmental degradation? Evaluate it by citing suitable reasons.
Which of the following conditions shows the polluted environment.
(i) pH of rain water is 5.6.
(ii) amount of carbondioxide in the atmosphere is 0.03%.
(iii) biochemical oxygen demand 10 ppm.
(iv) eutrophication.
What are biodegradable and non-biodegradable pollutants?
What is the importance of measuring BOD of a water body?
Match the activity given in Column I with the type of pollution created by it given in Column II.
| Column I (Activity) | Column II (Effect) | ||
| (i) | Releasing gases to the atmosphere after burning waste material containing sulphur. |
(a) | Water pollution |
| (ii) | Using carbamates as pesticides | (b) | Photochemical smog, damage to plant life, corrosion to building material, induce breathing problems, water pollution |
| (iii) | Using synthetic detergents for washing clothes |
(c) | Damaging ozone laye |
| (iv) | Releasing gases produced by automobiles and factories in the atmosphere. |
(d) | May cause nerve diseases in human. |
| (v) | Using chlorofluorocarbon compounds for cleaning computer parts |
(e) | Classical smog, acid rain, water pollution, induce breathing problems, damage to buildings, corrosion of metals. |
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.
How can you apply green chemistry for the following:
To reduce use of synthetic detergents.
How can you apply green chemistry for the following:
To reduce the consumption of petrol and diesel.
Which of these activities are the most significant contributor to water pollution?
Which of the following elements is both a water pollutant and air pollutant?
Which of these sources are responsible for water pollution?
- Households
- Industries
- Farms and fields
- Tourism
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.
Which of the following is not a cause of air pollution?
Hepatitis A is transmitted due to
Respiratory diseases are mainly caused by ______ pollution.
Sulphur dioxide is one of the components of polluted air, SO2 is also a major contributor to acid rain. The correct and complete reaction to represent acid rain caused by SO2 is ______.
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.
Which one of the following is NOT a significant factor in creating noise pollution?
