NCERT Solutions for Class 9 Geography, Chapter 3 : Drainage

Class 9 is the first stepping stone for a student in the competitive world. With the introduction of the CBSE Board Exam for class 10 a few years back, this has become an important gateway for a student. Based on the results of class 9th a student selects his future stream of Science, Commerce or Arts suiting his interest.

Takshila Learning is providing NCERT Solutions for Class 9 Geography as per the latest syllabus by CBSE. Class 9 is the building block for the CBSE Class 10 Board Exams, not only for your exams but also for your higher studies and career. Geography is the most essential subject and the knowledge in this field opens up wider career opportunities for the students.

Below you can find the NCERT solution for Class 9th Geography. You can get a Solution for the all-important question of Class 9 Geography, Chapter 3 : Drainage

1. Choose the right answer from the four alternatives given below.

(i) In which of the following states is the Wular lake located?

(a) Rajasthan (b) Punjab (c) Uttar Pradesh (d) Jammu and Kashmir

Answer:

Jammu and Kashmir.

(ii) The river Narmada has its source at

(a) Satpura (b) Amarkantak (c) Brahmagiri (d) Slopes of the Western Ghat.

Answer:

Amarkantak

(iii) Which one of the following lakes is a saltwater lake?

(a) Sambhar (b) Wular (c) Dal (d) Gobind Sagar

Answer:

Sambhar

(iv) Which one of the following is the longest river in Peninsular India?

(a) Narmada (b) Godavari (c) Krishna (d) Mahanadi

Answer:

Godavari

(v) Which one amongst the following rivers flows through a rift valley?

(a) Mahanadi (b) Krishna (c) Tungabhadra (d) Tapi

Answer:

Tapi

2. Answer the following questions briefly.

(i) What is meant by a water divide? Give an example.

Answer:

Any elevated area, such as a mountain or an upland, separates two drainage basins. Such an upland is known as a water divide.

(ii) Which is the largest river basin in India?

Answer:

Ganga River basin is the largest river basin in India.

(iii) Where do the rivers Indus and Ganga have their origin?

Answer:

Indus river origin – Near Manasarovar Lake, Tibet

Ganga River origin – Gangotri glacier in Uttaranchal

(iv) Name the two headstreams of the Ganga. Where do they meet to form the Ganga?

Answer:

The two headstreams of Ganga are Alaknanda and Bhagirathi. They both meet to form Ganga at Devprayag.

(v) Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course?

Answer:

In Tibet, the river has a small amount of water and less silt, as it is a cold and dry region. In India, it passes through an area with high rainfall. Therefore, the river contains a large amount of water and a large amount of silt.

 (vi) Which two Peninsular rivers flow through trough?

Answer:

Narmada and Tapi are the two Peninsular rivers that flow through the trough.

(vii) State some economic benefits of rivers and lakes.

Answer:

Rivers have been of fundamental importance in human history. Water from rivers is a basic natural resource, which is necessary for various human activities. Therefore, Riverbank has attracted inhabited people since ancient times. The use of rivers for irrigation, navigation and hydropower generation is of particular importance – especially in a country like India, where agriculture is the major source of livelihood of most of its population.

3. Below are given names of a few lakes of India. Group them under two categories – natural and created by human beings. (a) Wular (b) Dal (c) Nainital (d) Bhimtal (e) Gobind Sagar (f) Loktak (g) Barapani (h) Chilika (i) Sambhar (j) Rana Pratap Sagar (k) Nizam Sagar (l) Pulicat (m) Nagarjuna Sagar (n) Hirakund

Answer:

Natural Lakes:

1. Wular
2. Dal
3. Nainital
4. Bhimtal
5. Loktal
6. Chilika
7. Pulicat
8. Sambhar
9. Barapani.

Man-made lakes

1. Gobind Sagar
2. Rana Pratap Sagar
3. Nizam Sagar
4. Nagarjuan Sagar
5. Hirakud

4. Discuss the significant difference between the Himalayan and the Peninsular rivers.

Answer:

Himalayan Rivers:1. These are perennial rivers2. Get water from rain and snowfallPeninsular Rivers:1. These are seasonal rivers2. dependent on rainfall. During the dry season, the rivers dry up.

5. Compare the east-flowing and the west-flowing rivers of the Peninsular plateau.

Answer:

Rivers flowing west:1. There are only 2 long west flowing rivers – Narmada and Tapi.2. They flow into the Arabian Sea3. They have less number of tributaries4. Farm Estuaries5. Take less sediment.East flowing rivers:1. Many major rivers Mahanadi, Kaveri, Godavari, Krishna2. They flow into the Bay of Bengal3. There are many tributaries4. Form Deltas5. Carrying larger sediment than westward flowing rivers

6. Why are rivers important for the country’s economy?

Answer:

Rivers have been of fundamental importance in human history. Water from rivers is a basic natural resource, which is necessary for various human activities. Therefore, Riverbank has attracted inhabited people since ancient times. These settlements have now become big cities. List the cities in your state which are situated on the banks of a river. The use of rivers for irrigation, navigation, hydropower generation is of particular importance – especially in a country like India, where agriculture is the major source of livelihood for most of its population.

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