Comprehension
Addition or presence of undesirable substances in water is called water pollution.
Water pollution is one of the most serious environmental problems. Water pollution is caused by a variety of human activities such as industrial, agricultural and domestic. Agricultural run off laden with excess fertilizers and pesticides, industrial effluents with toxic substances and sewage water with human and animal wastes pollute our water thoroughly, Natural sources of pollution of water are soil erosion, leaching of minerals from rocks and decaying of organic matter. Rivers, lakes, seas, oceans, estuaries and ground water sources may be polluted by point or non-point sources. When pollutants are discharged from a specific location such as a drain pipe carrying industrial effluents dischaged directly into a water body it represents point source pollution. In contrast non-point sources include discharge of pollutants from diffused sources or from a larger area such as a run off from agricultural fields, grazing lands, construction sites, abandoned mines and pits, roads and streets.
Water pollution is one of the most serious environmental problems. Water pollution is caused by a variety of human activities such as industrial, agricultural and domestic. Agricultural run off laden with excess fertilizers and pesticides, industrial effluents with toxic substances and sewage water with human and animal wastes pollute our water thoroughly, Natural sources of pollution of water are soil erosion, leaching of minerals from rocks and decaying of organic matter. Rivers, lakes, seas, oceans, estuaries and ground water sources may be polluted by point or non-point sources. When pollutants are discharged from a specific location such as a drain pipe carrying industrial effluents dischaged directly into a water body it represents point source pollution. In contrast non-point sources include discharge of pollutants from diffused sources or from a larger area such as a run off from agricultural fields, grazing lands, construction sites, abandoned mines and pits, roads and streets.
Question: 1
What represents point source pollution ?
What represents point source pollution ?
Updated On: May 18, 2024
- Drain pipe carrying industrial effluents discharged directly into a water body
- River and seas getting polluted by washing activities
- Discharge of pollutants from diffused sources
- Decaying of organic matter
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The Correct Option is A
Solution and Explanation
The correct option is (A): Drain pipe carrying industrial effluents discharged directly into a water body.
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Question: 2
Out of the following which is not a cause of water pollution ?
Out of the following which is not a cause of water pollution ?
Updated On: May 18, 2024
- washing clothes in the river
- putting toxic industrial effluents in rivers
- soil erosion
- seasonal rainfall
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The Correct Option is D
Solution and Explanation
The correct option is (D): seasonal rainfall.
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Question: 3
Addition or presence of undesirable substances in water is called:
Addition or presence of undesirable substances in water is called:
Updated On: May 18, 2024
- Noise pollution
- Water pollution
- Soil pollution
- Air pollution
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The Correct Option is B
Solution and Explanation
The correct option is (B): Water pollution.
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Question: 4
Which is not the natural sources of water pollution?
Which is not the natural sources of water pollution?
Updated On: May 18, 2024
- Soil Erosion
- Leaching of minerals from rocks
- Decaying of organic matter
- Smoke from cars
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The Correct Option is D
Solution and Explanation
The correct option is (D): Smoke from cars.
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Question: 5
What can get polluted by point or non-point sources ?
What can get polluted by point or non-point sources ?
Updated On: May 18, 2024
- Rain water
- River, lakes, seas, oceans and ground water resources
- Agricultural land
- Domestic water
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The Correct Option is B
Solution and Explanation
The correct option is (B): River, lakes, seas, oceans and ground water resources.
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