Hydrosphere - Study Mode

[#131] 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.
Correct Answer

(C) 1, 2 and 3 only

Explanation

Solution: The lower course of a river is sometimes choked with sediments because the valley of a river is widest in its lower course, the velocity of a river in its lower course is low and the delta sometimes develops in a river's lower course.

[#132] The best way of conservation of water resources is
Correct Answer

(D) All of the above

Explanation

Solution: All the above given points are worthy so as to conserve water. As rain water is the pure water, it can be stored & utilized as per the needs. Hence underground water tanks in Rajasthan, overhead tanks in Tamil Nadu are compulsory. Over utilisation such as over irrigation depletes water resources, hence should be controlled & water be used wisely. Natural water bodies be replenished through reformation.

[#133] Farakka barrage is a major reason for contention between India and ________.
Correct Answer

(A) Bangladesh

Explanation

Solution: Farakka barrage is a major reason for contention between India and Bangladesh. The Farakka Barrage was created by India in 1975 to divert water from Ganges river system but this has resulted in a reduced flow towards Bangladesh which is a lower riparia state to this system.

[#134] Suez Canal joins ________
Correct Answer

(B) Red Sea and Mediterranean Sea

Explanation

Solution: Suez Canal is an artificial sea-level waterway in Egypt. It links the Mediterranean with the Red Sea through Isthmus of Suez. It was first opened in 1869 after a decade of construction. Strategically and economically it is one of the most important waterways in the world providing the shortest sea link between Asia and Europe.

[#135] Which of the following river stages and features is/are wrongly matched? 1. Mountain stage : waterfalls 2. Plain stage : oxbow lake 3. Plain stage : delta 4. Mountain stage : deposition
Correct Answer

(B) 3 and 4

Explanation

Solution: Plain stage : delta and Mountain stage : deposition are wrongly matched.