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Subjects

Geography

Drainage Systems in India

In this Class 9 Geography topic from the chapter Drainage, students learn how water flows across India through river systems, drainage basins, and networks. They explore the Himalayan and Peninsular river systems, compare their origins, courses, seasonal flow, and landforms, and understand patterns such as dendritic, trellis, and radial drainage. The topic also introduces the importance of rivers and lakes, along with concerns related to floods, pollution, and water management.

Hard · Level 4 · 25 questions

Practice questions

01The difference between northern and southern tributaries of the Ganga is linked with what?

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Answer and explanation

02Why is it necessary to understand Yamuna and Son differently in the Ganga system?

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03What understanding of the Ganga system develops by studying Devprayag and Prayagraj together?

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04What does the Brahmaputra being known by different names in Tibet Assam and Bangladesh show?

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05Under which condition does river deposition become more prominent than erosion?

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06If vertical erosion is seen in the upper course and deposition in the lower course of a river, what conclusion is correct?

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07On what basis can Mahanadi Godavari Krishna and Kaveri be grouped together?

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08Why would it be wrong to place Mahi and Sabarmati in the Ganga system?

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09Why were Himalayan river systems decisive in forming the northern plains of India?

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10If a river system has a large catchment with many tributaries, which effect is likely?

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11Why is understanding the subtle difference between river basin and catchment useful in exams?

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12When a river breaks into many branches in a delta, what is the relation between the main river and branches called?

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13Which statement clearly shows the difference in water sources of Himalayan and Peninsular rivers?

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14Which analysis correctly explains flood possibility in the Ganga system?

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15If the upper course of a river is mountainous and lower course is flat, what change will occur in river work?

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16Which factor is important in the development of inland drainage in the Thar region?

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17Which statement shows the limited but important presence of the Indus system in India?

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18Which combination best explains Brahmaputra floods in Assam?

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19Why does a drainage system affect the agricultural potential of an area?

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20Why is memorising drainage patterns only as a list of rivers not enough?

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21If tributaries continuously join the main river in a river system, how will the basin nature be understood?

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22What is the best basis to distinguish delta and estuary at a river mouth?

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23What conclusion emerges by studying Himalayan Peninsular and inland rivers together in India’s drainage system?

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24Which option best describes the overall functioning of a river system?

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25What is the most suitable reason for the formation of deep valleys in Himalayan rivers?

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