NCERT Solutions Class 9 Social Science (Geography) Chapter 3 Drainage – Here are all the NCERT solutions for Class 9 Social Science (Geography) Chapter 3. This solution contains questions, answers, images, explanations of the complete Chapter 3 titled Drainage of Social Science (Geography) taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Social Science (Geography), then you must come across Chapter 3 Drainage. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Social Science (Geography) Chapter 3 Drainage in one place.
NCERT Solutions Class 9 Social Science Geography Chapter 3 Drainage
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For a better understanding of this chapter, you should also see summary of Chapter 3 Drainage , Social Science Geography, Class 9.
|Subject||Social Science Geography|
NCERT Solutions Class 9 Social Science Geography chapter 3 Drainage
Class 9, Social Science Geography chapter 3, Drainage solutions are given below in PDF format. You can view them online or download PDF file for future use.
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Question & Answer
Q.1: Choose the right answer from the four alternatives given below. (i) Which one of the following describes the drainage patterns resembling the branches of a tree? (a) Radial (b) Dendritic (c) Centrifugal (d) Trellis (ii) In which of the following states is the Wular lake located? (a) Rajasthan (b) Uttar Pradesh (c) Punjab (d) Jammu and Kashmir (iii) The river Narmada has its source at (a) Satpura (b) Brahmagiri (c) Amarkantak (d) Slopes of the Western Ghats (iv) Which one of the following lakes is a salt water lake? (a) Sambhar (b) Dal (c) Wular (d) Gobind Sagar (v) Which one of the following is the longest river of the Peninsular India? (a) Narmada (b) Krishna (c) Godavari (d) Mahanadi (vi) Which one amongst the following rivers flows through a rift valley? (a) Mahanadi (b) Tungabhadra (c) Krishna (d) Tapi
Ans : (i) (b) Dendritic (ii) (d) Jammu and Kashmir (iii) (c) Amarkantak (iv) (a) Sambhar (v) (c) Godavari (vi) (d) Tapi
Q.2: Answer the following questions briefly. (i) What is meant by a water divide? Give an example. (ii) Which is the largest river basin in India? (iii) Where do the rivers Indus and Ganga have their origin? (iv) Name the two headstreams of the Ganga. Where do they meet to form the Ganga? (v) Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course? (vi) Which two Peninsular rivers flow through trough? (vii) State some economic benefits of rivers and lakes.
Ans : (i) Any elevated area such as a mountain or an upland that separate two drainage basins is called a water divide. An example are the Western Ghats. (ii) The Ganga Basin is the largest river basin in India. (iii) The river Indus rises in Tibet. near lake Mansarovar. and the Ganga originates at the Gangotri Glacier. Both of them have their origin in the Himalayas. (iv) The two head streams of the Ganga are the Bhagirathi and Alaknanda. They meet at Devprayag in Uttarakhand to form the Ganga. (v) In TIbet. the river Indus known as Tsang Po carries a smaller volume of water and less silt as it is a cold and dry area. In India. the river carries a large volume of water and considerable amount of silt because it passes through a region of high rainfall. (vi) Narmada and Tapi are two peninsular rivers, which flow through a trough. (vii) Lakes
- Lakes are of a great value to human beings.
- Lakes help to regulate the flow of rivers.
- Lakes help to prevent flooding during rainy season.
- During the dry season, lakes help to maintain an even flow of water.
- Lakes can also be used for developing hydel power.
- They moderate the climate of the surroundings and maintain the aquatic ecosystem.
- They enhance natural beauty and help to develop tourism and provide recreation. e.g., Dal Lake and Naini Lake at Nainital.
- Lakes provide opportunities for fishery development.
- They help to develop hydel power.
- They provide water for irrigation, for drinking and other requirements.
- They help to develop fisheries.
Q.3: Discuss the significant difference between the Himalayan and the Peninsular rivers.
Ans : Difference between the Himalayas and Peninsular rivers are as follows
Q.4: Compare the east flowing and the west flowing rivers of the Peninsular plateau.
Ans : The difference between east flowing rivers and west flowing rivers are
Q.5: Why are rivers important for the country’s economy?
Ans : Rives are important for the country’s economy because water from the rivers is a basic natural resource essential for various human activities. These are
- The rivers provide water for irrigation.
- They provide fertility to the soil.
- They are useful for navigation
- They help to generate hydro-electricity.
- They help to develop tourism.
- They provide water for various domestic uses.
- They provide livelihood to fishermen.
- They help to moderate the climate and environment of nearby areas.
NCERT / CBSE Book for Class 9 Social Science Geography
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