UPSC Exam > UPSC Questions > Which of the following best explain why the ...
Start Learning for Free
Which of the following best explain why the lower course of a river is sometimes choked with sediments?
1. The valley of a river is widest in its lower course.
2. The velocity of a river in its lower course is low.
3. The delta sometimes develops in a river’s lower course.
4. Much of the river water is drawn for irrigation in the lower course.
Select the correct answer using the codes given below
- a)1, 2, 3 and 4
- b)1, 3 and 4
- c)1, 2 and 3
- d)2 and 4
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following best explain why the lower course of a river i...
The river is choked because the valley of a river is widest in its lower course and the velocity of a river in its lower course is low.
View all questions of this test
Most Upvoted Answer
Which of the following best explain why the lower course of a river i...
The correct answer is option C: 1, 2, and 3.
Explanation:
1. The valley of a river is widest in its lower course:
In the lower course of a river, the valley widens as it approaches the sea or a lake. This widening of the valley leads to a decrease in the gradient or slope of the river. As the slope decreases, the water velocity also decreases. The slow-moving water in the lower course of the river allows the sediments carried by the river to settle down, leading to the choking of sediments in the river.
2. The velocity of a river in its lower course is low:
As mentioned earlier, the slope of the river decreases in the lower course, leading to a decrease in water velocity. When the velocity of the river decreases, it loses its ability to carry and transport larger sediments. As a result, the sediments settle down in the river, causing the choking of sediments.
3. The delta sometimes develops in a river’s lower course:
A delta is a landform that forms at the mouth of a river where it enters a body of water, such as a sea or a lake. When a river reaches its lower course, the velocity of the river decreases significantly. This decrease in velocity reduces the river's ability to carry the sediments it has eroded along its course. As a result, the sediments get deposited at the mouth of the river, forming a delta. The accumulation of sediments in the delta area can also cause the lower course of the river to become choked with sediments.
Therefore, all three factors - the widening of the valley, the decrease in water velocity, and the development of a delta - contribute to the choking of sediments in the lower course of a river.
Explanation:
1. The valley of a river is widest in its lower course:
In the lower course of a river, the valley widens as it approaches the sea or a lake. This widening of the valley leads to a decrease in the gradient or slope of the river. As the slope decreases, the water velocity also decreases. The slow-moving water in the lower course of the river allows the sediments carried by the river to settle down, leading to the choking of sediments in the river.
2. The velocity of a river in its lower course is low:
As mentioned earlier, the slope of the river decreases in the lower course, leading to a decrease in water velocity. When the velocity of the river decreases, it loses its ability to carry and transport larger sediments. As a result, the sediments settle down in the river, causing the choking of sediments.
3. The delta sometimes develops in a river’s lower course:
A delta is a landform that forms at the mouth of a river where it enters a body of water, such as a sea or a lake. When a river reaches its lower course, the velocity of the river decreases significantly. This decrease in velocity reduces the river's ability to carry the sediments it has eroded along its course. As a result, the sediments get deposited at the mouth of the river, forming a delta. The accumulation of sediments in the delta area can also cause the lower course of the river to become choked with sediments.
Therefore, all three factors - the widening of the valley, the decrease in water velocity, and the development of a delta - contribute to the choking of sediments in the lower course of a river.
|
Explore Courses for UPSC exam
|
|
Top Courses for UPSCView all
Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer?
Question Description
Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer?.
Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following best explain why the lower course of a river is sometimes choked with sediments?1. The valley of a river is widest in its lower course.2. The velocity of a river in its lower course is low.3. The delta sometimes develops in a river’s lower course.4. Much of the river water is drawn for irrigation in the lower course.Select the correct answer using the codes given belowa) 1, 2, 3 and 4b) 1, 3 and 4c) 1, 2 and 3d) 2 and 4Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup