The solutions for Chapter 3 of Geography are given below. Students should also check NCERT Solutions for Class 9 for other subjects.
Class | 9 |
Subject | Social Science |
Book | Contemporary India |
Chapter Number | 3 |
Chapter Name | Drainage |
Exercise Page No 23
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. For example, the water divide between the Indus and the Ganga river systems.
(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 carries a smaller volume of water and less silt, as it is a cold and dry area. In India, it passes through a region of high rainfall. Hence, the river carries a large volume of water and a considerable amount of silt.
(vi) Which two Peninsular rivers flow through a trough?
Answer:
Narmada and Tapi are the two Peninsular rivers that flow through a trough.
(vii) State some economic benefits of rivers and lakes.
Answer:
Rivers have been of fundamental importance throughout human history. Water from rivers is a basic natural resource, essential for various human activities. Therefore, riverbanks have attracted settlers from ancient times. Using rivers for irrigation, navigation and hydropower generation is of special significance — particularly to a country like India, where agriculture is the major source of livelihood of the majority 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:
Man-made lakes
4. Discuss the significant difference between the Himalayan and the Peninsular rivers.
Answer:
Himalayan Rivers:
Peninsular Rivers:
5. Compare the east-flowing and the west-flowing rivers of the Peninsular plateau.
Answer:
West flowing rivers:
East flowing rivers:
6. Why are rivers important for the country’s economy?
Answer:
Rivers have been of fundamental importance throughout human history. Water from rivers is a basic natural resource, essential for various human activities. Therefore, riverbanks have attracted settlers from ancient times. These settlements have now become big cities. Make a list of cities in your state which are located on the bank of a river. Using rivers for irrigation, navigation, hydropower generation is of special significance — particularly to a country like India, where agriculture is the major source of livelihood for the majority of its population.
The term drainage describes the river system of an area. The area drained by a single river basin is called a drainage basin. Chapter 3 Drainage of NCERT Class 9 Geography books – ‘Contemporary India I’ deals with the drainage system of India. The below-mentioned topics have been discussed in detail in this chapter:
1. The Himalayan Rivers
2. The Peninsular Rivers
3. Lakes
4. Role of Rivers in Economy
Students will also study the causes of river pollution and how it will affect society. Also, the concerns related to the increasing river pollution will help students learn how saving resources like water bodies can help in creating a better environment to live in.
Students can refer to the full set of NCERT Solutions for Class 9 Social Science to get answers from the Geography, History, Political Science and Economics textbook.
The topics that are covered in Chapter 3 of NCERT Solutions for Class 9 Geography are –
1. The Himalayan Rivers
The Indus River System, the Ganga River System and the Brahmaputra River System
2. The Peninsular Rivers
Narmada Basin, Tapi Basin, Godavari Basin, Mahanadi Basin, Krishna Basin, Kaveri Basin
3. Lakes
4. Role of Rivers in Economy
RMLAU Result 2024 Declared: Check UG and PG Odd Semester Results at rmlau.ac.in The Dr.…
Rupal Rana's achievement of securing All India Rank 26 in the UPSC exams is not…
UPSC Calendar 2025 Released at upsc.gov.in: Check CSE, NDA, CDS, and Other Exam Notification, Application,…
JSSC Teacher Admit Card 2024 Released at jssc.nic.in: Download JPSTAACCE Call Letter Here The Jharkhand…
NCERT Class 6 English Unit 9 – What Happened To The Reptiles Exercise Questions (Page…
NCERT Class 6 English Chapter 10 A Strange Wrestling Match A STRANGE WRESTLING MATCH NCERT…
View Comments