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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 3 · 25 questions

Practice questions

01Deep gorges of rivers like Indus and Brahmaputra are mainly linked with which process?

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Answer and explanation

02If rocks have uniform resistance and the slope is general, which pattern will develop?

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03Why do tributaries join the main river at angles in a trellis drainage pattern?

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04What is the relation between radial drainage pattern and the Amarkantak region?

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05What is the strongest indicator of a rectangular drainage pattern?

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06Which relief condition is most suitable for the development of parallel drainage pattern?

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07How can the relation between a water divide and a river basin be best explained?

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08Why do Himalayan rivers show more dynamic courses than Peninsular rivers?

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09What is the main geological reason for fixed courses of Peninsular rivers?

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10Why is the westward flow of Narmada and Tapi considered different from the usual Peninsular tendency?

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11What is the basis for calling the Narmada valley a rift valley?

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12Which combined reason best explains large deltas on the eastern coast?

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13Why do short western coastal rivers form estuaries rather than large deltas?

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14Calling Godavari the Dakshin Ganga is based on which geographical feature?

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15The east-flowing nature of Kaveri and Krishna reflects which feature of the Deccan Plateau?

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16Why is meander formation more likely in the Ganga plain?

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17What is the most suitable geographical reason behind calling Kosi the sorrow of Bihar?

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18The wide and island-forming character of the Brahmaputra in Assam is linked with what?

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19Why is a network of distributaries found in the Ganga-Brahmaputra delta?

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20The formation of Sundarbans is explained by which combined river process?

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21The example of the Luni river complicates which idea about Indian drainage?

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22If a river catchment has both heavy rainfall and steep slope, what result is more likely?

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23Why does Khadar soil in flood plains keep renewing repeatedly?

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24The difference between Bhangar and Khadar can be understood through which river system feature?

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25What is the correct basis for distinguishing the five major Indus tributaries from the Ganga system?

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