RBSE Class 11 Geography Important Questions Chapter 3 Drainage System

Rajasthan Board RBSE Class 11 Geography Important Questions Chapter 3 Drainage System Important Questions and Answers. 

RBSE Class 11 Geography Important Questions Chapter 3 Drainage System

Multiple Choice Questions

1. Which river flows in the Rift Valley?
(A) Damodar 
(B) Krishna
(C) Tungabhadra 
(D) Tapi
Answer:
(D) Tapi

 

2. Which is the longest river of peninsular India?
(A) Narmada 
(B) Godavari
(C) Krishna 
(D) Mahanadi
Answer:
(B) Godavari

3. Where is the origin of river Narmada?
(A) Satpura 
(B) Amarkantak
(C) Brahmagiri 
(D) Govindsagar
Answer:
(B) Amarkantak

4.Which is the largest river basin in India? 
(A) Ganga 
(B) Yamuna
(C) Mahanadi 
(D) Godavari
Answer:
(A) Ganga 

5. Which is the longest river of India?
(A) Yamuna 
(B) Ganga
(C) Brahmaputra 
(D) Godavari
Answer:
(C) Brahmaputra 

6. The drainage system with branches resemble a tree.
(A) Trellies 
(B) Radial
(C) Dentrictic 
(D) Rectangular
Answer:
(C) Dentrictic 

7. Ganga and Yamuna river meet at
(A) Kanpur 
(B) Varanasi
(C) Patna 
(D) Prayagraj 
Answer:
(D) Prayagraj 

8. Sunderban delta is formed by:
(A) Ganga 
(B) Kaveri
(C) Godavari 
(D) Narmada
Answer:
(A) Ganga 

9. Shiva Samudram fall is located at
(A) Mahanadi 
(B) Godavari
(C) Cauvery 
(D) Narmada
Answer:
(C) Cauvery 

10. Which lake is located in Odisha.
(A) Chilika 
(B) Sambhar
(C) Vembanad 
(D) Kolleru
Answer:
(A) Chilika  

Very Short Answer Type Questions

Question 1. 
Name the two drainage systems of India.
Answer: 
Himalayan Rivers and Peninsular Rivers.

Question 2. 
What is the total catchment area of the River Indus?
Answer: 
1,165,000 sq km.

Question 3. 
Name two Indian rivers flowing through faults.
Answer: 
Narmada and Tapti.

Question 4. 
Name the main watershed of Peninsular rivers.
Answer: 
Western Ghats.

Question 5. 
Name the water divide between the Rivers of Northern India and the Peninsular Rivers.
Answer: 
Vindhya-Satpura range.

Question 6. 
Name the source of River Indus.
Answer: 
Mansarovar lake (Tibet).

Question 7. 
What is the total length of the River Indus?
Answer: 
2900 kms.

Question 8. 
Name the tributary of the Ganges which flows from South to North.
Answer: 
Son River.

Question 9. 
Name a trans-Himalayan river which is the tributary of the Indus.
Answer:
Sutlej.

Question 10. 
Name the rivers of Indian plateau which flow towards Arabian Sea.
Answer: 
Narmada and Tapti.

Question 11. 
Name an important river of the Peninsular India forming an estuary at its mouth.
Answer: 
Narmada.
 
Question 12.
 Name the longest river of Peninsular India.
Answer: 
Godawari.

Question 13. 
Name the source of Krishna River.
Answer: 
Mahableshwar.

Question 14. 
What is the total catchment area of the Ganges in India?
Answer: 
8,61,404 sQuestion km.

Question 15. 
What name does river Ganga acquire in Bangladesh?
Answer: 
Padma.

Question 16. 
Name three rivers forming Himalayas river system.
Answer: 
Indus, Ganga and Brahmaputra.

Question 17. 
Name the rivers of Peninsular India falling into Bay of Bengal.
Answer: 
Mahanadi, Godavari, Krishna and Cauvery. Question 18. Name a trans-Himalayan river.
Answer: 
Sutlej.

Question 19. 
Name a river of antecedent drainge. 
Answer: 
Indus.

Question 20.
In ancient times, which mighty river from Punjab to Assam flowed?
Answer: 
Indo-Brahm River.

Question 21. 
What is the source of Jhelum River? 
Answer: 
Wularlake.

Question 22. 
Name the delta formed by Ganges River. 
Answer: 
SunderbAnswer:

Question 23. 
Which River is called Tsangpo in Tibet? 
Answer: 
Brahmaputra.

Question 24. 
Which river is called ‘Dakshin Ganga’?
Answer: Cauvery River.

Question 25. 
Which water fall is formed by Narmada river near Jabalpur?
Answer: 
Marble Rocks.

Question 26. 
Name an ancient river formed in dry beds of Haryana.
Answer: 
River Saraswati.

Short Answer Type Questions

Question 1.
Name the three main Himalayan river systems.
Answer: 
The Himalayan rivers consist of three main systems:

1. The Indus System
2. The Ganges System
3. The Brahmaputra System. 

Question 2. 
What is a Gorge? Give two examples.
Answer: 
A gorge is a narrow, deep valley with steep (vertical) sides. Its bank continues rising, while its bed is deepened due to down cutting of the river. Many deep Gorges are found in the Himalayas such as Indus Gorge, Sutlej, Dihang Gorge (Brahmaputra).

Question 3. 
Where does the river Indus rise? Name its; five important tributaries. 
Answer: 
The river indus rises in Tibet at an altitude of 5180 metres near Mansarowar lake. It is a trans Himalayan river. It flows west and North-West-wards and reaches the Arabian sea. Its five important tributaries are the Jhelum, the Chenab, the Ravi, the Beas and the Sutlej.

Question 4. 
Name two head streams of the Ganga which unite at Dev Prayag.
Answer: 
The Ganga rises in U.P. from the Himalayas. The two head streams Alaknanda and Bhagirathi unite at Dev Prayag and the river gets its name as Ganga.

Question 5. 
Name the major rivers of the Peninsular India.
Answer: 
Some rivers of the Peninsular India flow eastward into the Bay of Bengal. These are Mahanadi, Godavari, Krishna and Cauvery. Some rivers flow westward into the Arabian sea. These rivers include Narmada and Tapti.

Question 6. 
What is a delta? Give four examples from India. 
Answer: 
A delta is a triangular piece of alluvial lowland formed at the mouth of the river.
It is formed due to deposition by the river at its lower course. Four examples of Deltas in India are :

1. Ganges-Brahmaputra Delta.
2. Mahanadi Delta.
3. Krishna Delta.
4. Cauvery Delta.

Question 7. 
Why is Godawari river often referred to as ‘Dakshina Ganga’ or Vridha Ganga?
Answer: 
The Godavari is the longest of the Peninsular rivers. It has an extensive drainage basin covering 3,12,812 sq kms. Its drainage basin extends through Maharashtra, Madhya Pradesh, Karnataka, Odisha and Andhra Pradesh. Because of its large size and extent, it is compared to river Ganga. It has got the same cultural significance in the peninsular India as the Ganges has in the northern plain. Therefore it is referred to as Dakshina Ganga or Vridha Ganga.
 
Question 8. 
Why do the rivers have no deltas on the Western Coast, even though they transport a lot of sediments with them?
Answer: 
The Narmada and Tapti are the main rivers flowing westward on the western coast. These rivers carry a large amount of sediments with them. But these rivers do not form any delta near their mouths. These rivers form estuaries.
Unfavourable Conditions. The west coasts are not marked with favourable conditions required for the formation of a delta.

1. The lower courses of these rivers have steep slopes.
2. The rivers have a swift current.
3. The rivers are unable to deposit their sediments at their mouths.
4. These rivers do not have any large tributaries to add to their sediments.
5. These rivers flow through rift valleys.

Question 9. 
Explain briefly the theory of the “IndoBrahm River” as believed by some geologists. Also mention the two principal grounds on which this theory has been discarded. 
Answer: 
The Indo-Brahm River Theory. The Indus, the Ganga and Brahmaputra river systems have been evolved during a long course of time. These rivers rise in Tibet i.e. in trans Himalayas. These rivers flow parallel to the main axis of the Himalayas. These rivers are older than the Himalayas themselves. Some of the geologists believe that before the uplift of the Himalayas, a mighty stream flowed from Assam to Punjab, all along the foot of the Himalayas. The stream is referred as ‘Shiwalik’ or the ‘Indo-Brahm River’. Due to uplift of the Potwar Plateau, the direction of this river was reversed. The river was dismembered into three river systems of Indus, Ganga and Brahmaputra. The Yamuna began to flow as a tributary of the Ganga. Due to headward erosion, the Ganga took a southernly course.

Criticism. 
The concept of Indo-Brahm river has been challenged on many grounds, even then the theory cannot be discarded.

1. It is not necessary to visualize such a mighty stream to explain the alluvial deposits of Shiwaliks. These might have been formed by alluvial fans were:
2. The alluvial deposits between Rajmahal Hills and Shillong plateaus should have been laid down over a much longer period. 

Comparison Questions

Question 1. 
Distinguish between East flowing and West flowing rivers of the Peninsular India.
Answer:

East flowing River	West flowing Rivers
1. The Mahanadi, Goda- wari, Krishna, Cauvery are east flowing rivers.	1. The Narmada and Tapti are west flowing rivers.
2. These rivers form deltas on the east coast.	2. These rivers do not form deltas on the west coast.
3. These rivers fall into Bay of Bengal.	3. These rivers fall into Arabian sea.

Question 2.
Distinguish between antecedent drainage and consequent drainage.
Answer:

Antecedent Drainage	Consequent Drainage
1. These rivers maintain their original slope (before the up-lift), despite the rise of the land due to folding. Rivers keep on flowing in the original direction.	1. In an up-lifted area, the rivers flow in the direction resulting as a consequence of the slope
2. These rivers are older than the fold mountains over which these rivers flow.	2. These rivers are formed after the uplift of the area.
3. These rivers cut deep gorges due to down cutting.	3. These rivers do not form gorges.
4. The trans Himalayan rivers Indus, Sutlej, Kosi, represent antecedent rivers	4. The rivers of the Peninsular India flow eastward, according to slope, and are consequent rivers

Essay Type Questions

Question 1.
Describe the usability of rivers of India.
Answer: 
USABILITY OF RIVERS
The great rivers comprise large water wealth of the country. The volume of annual precipitation in the country is estimated at about 37,00,400 million cubic metres. A large part of it seeps into the ground and some part is lost by evaporation and transpiration. The rivers carry about 16,77,532 million cubic metres of water per year. For uneven topography and flow  characteristics, all of this not usable. About 5,55,166 million cubic metres of river water - 33 per cent of the annual flow, are usable for irrigation. 

Large rivers have great water power potential. The Himalayas in the north, the Vindhyas, the Satpura and the Aravalli in the west, the Maikala and Chhotanagpur in the east, the Meghalaya plateau and Purvanchal in the north-east, and the Western and the Eastern Ghats of the Deccan plateaus offer possibilities of large scale water power development. Sixty per cent of the total river flow is concentrated in the Himalayan rivers, 16 per cent in the Central Indian rivers (the Narmada, the Tapi, the Mahanadi, etc.), and the rest in the rivers of the Deccan plateaus. Dependable power generation from the peninsular rivers requires impounding of water during the monsoon months. 

The Himalayan rivers do not have such problems as their flow is appreciable even during the critical winter months. They, however, have other kind of problems, namely, difficulty in construction of large storage on account of narrow valleys, high seismicity of the region and vast alluvial plain with no variation in relief. The country has an exploitable power potential of about 41 million kw at 60 per cent load factor from these rivers. The Ganga and the Brahmaputra in the north and northeastern part of the country, the Mahanadi in Odisha, the Godavari and the Krishna in Andhra, the Narmada and the Tapi in Gujarat, and the lakes and tidal creeks in coastal states possess some of the important and useful water ways of the country. 

In the past they were of great importance, which suffered with the advent of rail and roads. Withdrawal of large quantities of water for irrigation resulted in dwindling flow of many rivers. The country has a navigable water ways of about 10,600 km-2480 km of navigable rivers by steamers and large country boats, 3920 km of navigable rivers by medium sized country boats, and 4200 km of canals and back waters navigable by country boats. The most important navigable rivers are the Ganga the Brahmaputra and the Mahanadi. The Godavari, the Krishna, the Narmada and the Tapi are navigable near their mouths only. The rivers also supply water to cities, villages and big industrial installations.

Source Based Questions

1. Read the following paragraph and answer the questions given below:
River Narmada rises from Amarkantak Plateau in Madhya Pradesh. It is 1300 km long. It flows through a rift valley. It does not form a delta on the western coast. Tapti river rises near Betul in Mahadeo Hills. It is 730 km. long. It flows through a rift valley. Luni, Sabarmati and Mahi are other main rivers falling into the Arabian sea. The Damodar, 530 km. long rises from Chota Nagpur plateau. On account of its floods, it is called River of Sorrow. DVC project is a multipurpose project to get benefits from this river. River Godavari is long and rises from the Western Ghats. It forms a fertile delta on the East coast.

(i) Which river flows in a rift valley?
(a) Damodar 
(b) Mahanadi
(c) Tapti 
(d) Godavari
Answer: 
(c) Tapti

(ii) Which is the longest river of Peninsular India?
(a) Narmada 
(b) Godavari
(c) Krishna 
(d) Mahanadi
Answer: 
(b) Godavari

(iii) Where is the origin of river Narmada?
(a) Satpura 
(b) Amarkantak
(c) Brahmagiri 
(d) Govindsagar
Answer: 
(b) Amarkantak

(iv) Where does river Damodar rise from?
(a) Chota Nagpur 
(b) Orissa
(c) Bengal 
(d) Bihar
Answer: 
(a) Chota Nagpur

2. Read the following paragraph and answer the questions given below:
The Himalayas run in an east-west direction in the northern part of India. This mountain range is 2400 km. long and 240 to 320 km wide. These are the youngest and the highest fold mountains of the world. These are young fold mountains as these have been formed in the recent times. These have been formed in tertiary period (6 crore years ago). These were formed at the site of Tethys sea. The sediments were uplifted to form high mountains. The Himalayas are still rising in some parts. The Himalayas are a series of parallel ranges intersected by deep valleys and broad plateaus. These ranges are compared to a sword or a bow. The average height of the Himalayas is 5000 metres.

(i) What is the average height of Northern mountain region?
(a) 2400 km 
(b) 240 km
(c) 320 km 
(d) 5000 metres
Answer:
(a) 5000 metres 

(ii) Name the highest fold mountain?
(a) Andes 
(b) Himalayas
(c) Satpura 
(d) Vindhyan
Answer: 
(b) Himalayas

(iii) How many years ago Himalayas were formed?
(a) 6 lakh years ago
(b) 6 million years ago
(c) 6 crore years ago
(d) 6 thousand years ago 
Answer:
(c) 6 crore years ago

(iv) What is the width of northern mountain range?
(a) 320 km 
(b) 240 km
(c) 240 to 320 km 
(d) 320 to 325 km
Answer: 
(c) 240 to 320 km 
  
HOTS QUESTIONS

Question 1
Write a note on National River Conservation Plan (NRCP) an Ganga Action  Plan (GAP).
Answer: 
The activities of Ganga Action Plan (GAP) Phase-I, initiated in 1985, were declared closed on 31st March 2000. The steering Committee of the National River Conservation Authority reviewed the progress of the GAP and necessary correction of the basis of leassons learnt and experiences gained from GAP Phase-I. These have been applied to the major polluted rivers of the country under the NRCP.

SELF EVALUATION TEST 

1. Name the source of river Sutlej. 
2. Name the longest river of peninsular India. 
3. Name a trans-Himalayan river. 
4. Which river is called Dakshin Ganga? 
5. What is a gorge? 
6. What is Indo Brahm river? 
7. What is a watershed? 
8. Distinguish between a delta and an estuary. 
9. What is a delta? 
10. Describe the utility of river.