UPSC Geography Drainage Question Bank Drainage / Lake / Ponds, etc.

Which of the following best explain why the lower course of a river is sometimes chocked 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 rivers 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: C

Solution :

The river is chocked because the valley of a river is widest in its lower course and the velocity of a river in its lower course is low.