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There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.
Q. What is the reason behind the high concentration of pollutants in rivers?
  • a)
    High temperature
  • b)
    Low flow of water
  • c)
    Increase of insecticides and pesticides
  • d)
    All of these
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Directions: Answer the following question based on the passage given b...
The waste water which is discharged from the sewage treatment plants has a higher temperature than the temperature of the river. In summers, the surrounding temperature is already higher and the release of this hot water further accelerates the pollution of water bodies. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers, especially remains very high during the summer season when the flow of water is low.
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Directions: Answer the following question based on the passage given b...
Reason behind the high concentration of pollutants in rivers:
The high concentration of pollutants in rivers is primarily due to a combination of factors that contribute to the degradation of water quality.

Low flow of water:
- During the summer season, the flow of water in rivers is low, which results in a higher concentration of pollutants as they are not diluted effectively.
- Low flow also leads to a slower movement of water, allowing pollutants to accumulate and remain in the water for longer periods of time.

Increase of insecticides and pesticides:
- The use of agricultural chemicals such as fertilizers, insecticides, and pesticides is a major source of pollutants in rivers.
- These chemicals are washed off from agricultural fields during rains or irrigation, and they find their way into rivers through surface runoff, leading to contamination.

High temperature:
- High temperatures can increase the rate of chemical reactions that lead to the breakdown of pollutants, making them more harmful to the aquatic ecosystem.
- Warmer temperatures can also decrease the oxygen levels in water, further impacting the health of aquatic organisms.

Overall impact:
- The combination of low flow of water, increased use of agricultural chemicals, and high temperatures results in a high concentration of pollutants in rivers, especially during the summer season.
- This pollution poses a significant threat to aquatic life, human health, and the overall ecosystem of the rivers.
In conclusion, the high concentration of pollutants in rivers is a complex issue influenced by multiple factors, and addressing this problem requires a comprehensive approach focusing on reducing pollution sources and improving water quality management practices.
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Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer?
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Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? for Humanities/Arts 2024 is part of Humanities/Arts preparation. The Question and answers have been prepared according to the Humanities/Arts exam syllabus. Information about Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Humanities/Arts 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Humanities/Arts. Download more important topics, notes, lectures and mock test series for Humanities/Arts Exam by signing up for free.
Here you can find the meaning of Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Directions: Answer the following question based on the passage given below:There are four major sources of surface water. These are rivers, lakes, ponds and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The total replenishable groundwater resources in the country are about 432 cubic km. The level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south India. India has a vast coastline and the coast is very indented in some states. Due to this, a number of lagoons and lakes have formed. The States like Kerala, Odisha and West Bengal have vast surface water resources in these lagoons and lakes. Although, water is generally brackish in these water bodies, it is used for fishing and irrigating certain varieties of paddy crops, coconut, etc. Available water resources are degrading rapidly. The major rivers of the country generally retain better water quality in less densely populated upper stretches in hilly areas. In plains, river water is used intensively for irrigation, drinking, domestic and industrial purposes. The drains carrying agricultural (fertilizers and insecticides), domestic (solid and liquid wastes), and industrial effluents join the rivers. The concentration of pollutants in rivers specially remains very high during the summer season when flow of water is low.Q.What is the reason behind the high concentration of pollutants in rivers?a)High temperatureb)Low flow of waterc)Increase of insecticides and pesticidesd)All of theseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Humanities/Arts tests.
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