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Geography

The Himalayan Rivers

In Class 9 Geography, this topic from the chapter “Drainage” introduces the Himalayan river systems, especially the Indus, Ganga and Brahmaputra. Students learn how these rivers are fed by glaciers, snow and rainfall, making them largely perennial, and trace their courses, major tributaries and drainage patterns. The topic also explains how Himalayan rivers shape deep gorges, valleys, meanders, floodplains and deltas, while supporting farming, settlements and ecosystems. It highlights their economic importance as well as the challenges of floods, erosion and changing water conditions.

Medium · Level 6 · 25 questions

Practice questions

01What is the main reason for the formation of floodplains in the Ganga plain?

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02Why do features of upper, middle and lower courses of Himalayan rivers change along their long journey?

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03Why does the Brahmaputra carry less silt in Tibet but become more silt-laden in India?

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04How do tributaries of Himalayan rivers affect the river system?

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05The Ganga River plays an important role in forming which plains of India?

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06The Satluj River is part of which major Himalayan river system?

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07Which tributary of the Ganga system originates from the Yamunotri Glacier?

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08Why is deposition greater in the lower course of Himalayan rivers?

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09The Sundarban in the delta region is associated with which rivers?

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10The major Indian flow of the Brahmaputra is associated with the plains of which state?

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11What is the role of glaciers in the catchment of Himalayan rivers?

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12Why can Himalayan rivers abandon old channels and create new courses in plains?

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13How does the energy of Himalayan rivers generally change from mountains to plains?

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14In the Ganga system, the source region of rivers like Kosi and Gandak lies mainly toward which side?

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15Why are Himalayan rivers linked with the formation of India's northern plain system?

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16What is the result of a dense network of tributaries in Himalayan rivers?

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17Why is it important to study origin, tributaries and mouth together while studying Himalayan river systems?

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18The formation of alluvial plains by Himalayan rivers is most closely linked with what?

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19If a Himalayan river has a large catchment area, what effect can it have on the main river?

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20What does a network of tributaries strengthen in Himalayan rivers?

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21What should be understood from the changing names of the Brahmaputra?

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22What is the main reason for gorge formation in the upper course of Himalayan rivers?

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23What is the importance of Sundarbans in the Ganga Brahmaputra delta?

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24What is the main reason for island formation in the Brahmaputra River in the plains of Assam?

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25Oxbow lakes in Himalayan river plains are formed by which process?

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