PSEB Punjab Board Class 9 Social Science Geography Textbook Solution Chapter 3A India : Drainage Exercise Questions and Answers
A.) Map Work
1.) Show in the outline map of India : (i)Ganga (ii) Brahmputra (iii) Wular and Sambhar lakes (iv) GobindSagar Lake
2.) Show in the outline map of India : (i) Ganga with its tributries, three each on both sides. (ii) Two peninsular rivers flowing towards west. (iii)Three peninsular rivers flowing towards East and ending up in Bay of Bengal.
Ans.
i) River Ganga flowing in the north side,
Right Bank tributaries: Gomati, Ghaghara, Gandak, Kosi
Left Bank tributaries : Yamuna, Betwa, Ken , Son
ii) Peninsular rivers flowing towards west: Luni, Mahi, Narmada
ii) Peninsular rivers flowing towards East and ending up with bay of bengal: Mahanadi, Godavari, Krishna, Kaveri
B Objective Type Questions
Answer the following questions in a single word to one sentence length :
1.) Which among the following is not tributory of Ganga (Ganges) :
(i) Yamuna (ii) Beas (iii) Gandak (iv) Son
Answer:- Beas is nit tributory of Ganga
2.) Which of these lakes is not natural : (i) Renuka (ii) Chilka (iii) Dall (iv) RanjitSagar
Answer:- RanjitSagar, because the rest of them are natural lakes.
3.) Which drainage system is biggest in India : (i) Ganga (ii) Godavari (iii) Brahmputra (iv) Indus
Answer:-
- Which is the biggest delta of the world?
Answer:- Ganga creates world’s largest delta called Sundarban Delta
5.) What is meant by Doab?
Answer:-
In India, Doab is a term used for the tract of land lying between two converging, or confluent, rivers. It is similar to an interfluve.
6.) What is length of Indus and how much of its portion lies in India?
Answer:- The total length of the Indus river is 2,880 kilometers and its length in India is 709 kilometers.
After entering India, it passes through Ladakh, Zaskar, Gilgit, Balistan and enters into Pakistan near Attok.
- Name three peninsular rivers ending up in Bay of Bengal.
Answer:- Mahanadi, Godavari, Krishna and Kaveri rivers end up in Bay of Bengal.
- In how many parts can we divide drainage systems in India?
Answer:- Indian River system is divided into four parts : (a) Himalayan River System (b) Peninsular River System (c) Coastal Rivers (d) Inland Drainage
9.) River Indus originates from which glacier?
Answer:- Indus river originates Bokhar-Chu glacier
10.) Name any two seasonal rivers.
Answer:- Mahanadi and Kaveri rivers are amongst seasonal rivers
11.) Which is birth place of Mahanadi? Name its two tributaries.
Answer :- Birth Place of Mahanadi river: It originates from, Dandakaranya, (Chhattisgarh)
Its two tributaries are Shionath, Mand
12.) Name five natural lakes of India.
Answer:- Ashtamundi,, Bhimtal, Chandartal, Chilka, Dall, are natural lakes of India
C Short Answer Questions
Give short answers for the following questions :
1.) Pollution is increasing in Ganga. What is being done to check it?
Answer:- Humans have polluted water by mixing chemicals in it, in the name of development.
Ganga Action plan was started in 1986. In 2014 the government took various steps for cleaning river Ganga. River pollution of Punjab is also included in this plan. Along with the efforts of the government, common people should judiciously use fertilizers and Insecticides
Water resources can be saved by the installation of water treatment plants. It should be made a legal neccessity so that industrial polluted water should be treated well before waste falls into the river
2.) Write a note on Internal drainage in India.
Answer :-
3.) Which is ‘Vridh Ganga’? Name its tributories.
Answer:- Godavari is the second largest river of India after Ganga and is also known as old Ganga or southern Ganga. Its source is in Triambakeshwar, Maharashtra in Brahamgiri mountains.
Tributaries of Godavari: Vaingangavardha, Indravati, SabriManjiraetc
4.) On which river ‘Dhuandhar falls’ lies? Name its tributries also.
Answer:- Dhuandhar falls lies on Narmada River. Its tributaries are Twa, Bhoriar, Banjair Shakkar, Dodhi, Ganjali Hira, Barna etc.
D Long Answer Questions
Answer the following questions in detail :
1.) Which are Himalayan and Peninsular rivers? Differentiate between their characteristics.
Answer:-
Himalayan river:- Three major rivers Indus, Ganga, Brahamptura and their tributaries are included in this. Himalayan rivers were flowing in this area even before the origin of the Himalayas. Gorges of Indus, Satluj, Alkanda, Gandak, Kosi and Brahamputra give strength/support to this thought/statement
Peninsular Drainage : Peninular Rivers are seasonal rivers. Most of the peninsular rivers which include Mahanadi, Kaveri, Godavari, Krishna, etc. flow towards east and also form deltas. Narmada and Tapi flow towards west and form Estuaries.
Himalayan rivers | Peninsular rivers |
1. Himalayan rivers are perennial rivers | 1.Peninsular rivers are seasonal rivers |
2. There are at young stage. | 2. These have attained mature stage |
3. These rivers originate from Himalayan mountains | 3. These originate from the mountain ranges of peninsular plateau. |
4. The Himalayan rivers have large drainage basins | 4. Drainage system of these rivers is small. |
5. There rivers makes deltas. GangaBrahamputra , Sudarban delta is the largest delta of world. | 5. Godavri, Krishna, Kaveri make deltas. Narmada andTapi make esturies. |
6.There flow through deep gorges. |
2.) Describe three drainage systems of India and explain any one of them in detail.
Answer :-
Indian River system is divided into four parts : (a) Himalayan River System (b) Peninsular River System (c) Coastal Rivers (d) Inland Drainage
- Peninular Rivers are seasonal rivers. Most of the peninsular rivers which include Mahanadi, Kaveri, Godavari, Krishna, etc. flow towards east and also forms deltas. Narmada and Tapi flow towards west and form Estuaries.
- Inland drainage : Some of the Indian rivers do not fall in sea and they go underground. 465 km long river Ghaggar is one of the major examples of these rivers.Luni river of Rajasthan and rivers flowing in Ladakh are also the important examples.
- Himalayan River System : Three major rivers Indus, Ganga, Brahamptura and their tributaries are included in this. Himalayan rivers were flowing in this area even before the origin of Himalayas.
- Brahmaputra Drainage : Brahamputra origin in the Angsi glacier, located on the northern side of the Himalayas in Burang, Tibet near the place of origin of Satluj . In Tibet it is known as Tsangpo and in Chinese it is known as ‘YarlungTsangpo’. Its length is 3,848 kilometers. After flowing for 1800km crossing NamchaBarwa mountain range it take hairpin turn towards south. After crossing Dihang (Himalayas) it enters in Sadiya in Assam valley. Then it turns towards south and confluences with Ganga making a largest delta of the world, called Sundarban Delta. In Assam, ‘Majuli Island’ is situated in this river which is the world’s largest Inter Reverine Island, Sabansiri, Kaimang, Dhansiri, Dihang, Torsa,Tista are its major tributaris.
3.) What are the economic benefits of North Indian and South Indian rivers?
Answer:-
Economic benefits of North Indian and South Indian rivers:
- Indus valley civilization which was the one the most ancient civilizations of the world , flourished on the banks of the Indus and its tributaries. A river is the cradle of civilisations and shortage of water leads to displacement of civilisations also. Not only civilisations have moved with water, the floklores, traditions, dances have also got related with water. Rivers of India are the life lines of the Indian
- Water is the most important natural source. It is used for irrigation, Industries and for household activities.
- Electricity produced by dams built on these rivers play an important role in the functioning of Industries.
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