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Subjects

Geography

Role of Rivers

In Class 9 Geography, this topic from the chapter “Drainage” explains how rivers shape the land through erosion, transportation and deposition. Students learn how river systems and drainage patterns influence plains, valleys, agriculture, settlements, transport and the availability of water. The topic also highlights the importance of rivers in human life, along with challenges such as pollution, floods and the need for careful conservation and management of river resources.

Medium · Level 1 · 25 questions

Practice questions

01Why are rivers considered the main channels of a drainage system?

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02Why did agriculture develop more in river valleys?

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03What is the main reason for the fertility of floodplains?

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04When are rivers more useful for hydroelectric generation?

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05What does it mean that a river causes both erosion and deposition?

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06What is the main reason for delta formation at a river mouth?

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07Why have rivers helped in the growth of many cities?

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08How do rivers support rural livelihoods?

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09Why were river routes important in historical trade?

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10How can rivers recharge groundwater?

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11Why is erosion greater in the upper course of a river?

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12Why is deposition greater in the lower course of a river?

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13How can dams help in flood control on rivers?

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14Why are river valleys attractive for human settlement?

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15How is the cultural importance of rivers seen?

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16Why is industrial use of river water important?

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17What problem can uncontrolled sand mining in rivers cause?

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18Why are river delta regions often densely populated?

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19What effect can blocking or diverting river flow have on downstream areas?

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20Why is navigation not possible everywhere in rivers?

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21How do rivers maintain natural ecology?

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22Why is treatment necessary before using river water as drinking water?

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23Why is it incomplete to consider floods only harmful?

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24Why can building roads or railways in river valleys be easier?

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25Which option correctly shows the multidimensional economic importance of rivers?

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