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Subjects

Geography

The Himalayan Rivers

हिमालयी नदियाँ

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.

Practice questions

Why can the course shifting tendency of Kosi be dangerous for plains?HardLevel 34Why did agriculture and settlements develop more in alluvial plains of Himalayan rivers?HardLevel 34What is the most correct meaning of changes in name and character of Brahmaputra from Tibet to Assam?HardLevel 34What is the basis for identifying Yamuna and Son separately in the Ganga system?HardLevel 34If a stream branches away from the main river in the Ganga delta, what is the problem in calling it a tributary?HardLevel 34Why can floods increase when the bed of a Himalayan river becomes shallow?HardLevel 34Heavy deposition in the Ganga Brahmaputra delta promotes what type of river branches?HardLevel 34Why is vertical erosion stronger upstream and lateral erosion stronger in plains of a Himalayan river?HardLevel 34How is the contrast of floods and fertile soil in Himalayan rivers explained?HardLevel 34What is a simple exam basis for keeping Indus tributaries and Ganga tributaries separate?HardLevel 34If a river brings huge sediment from Himalayas to plains, what long term geomorphic result can form?HardLevel 34Why should Brahmaputra in Assam be studied as a river system, not only as a single river?HardLevel 34Why is the perennial nature of Himalayan rivers important in water management?HardLevel 34What is understood by placing Haridwar Prayagraj and Sundarbans in order in the Ganga system?HardLevel 34How is the effect of young mountain region seen in Himalayan rivers?HardLevel 34If river velocity decreases in the Ganga Brahmaputra delta, what will happen to sediments?HardLevel 34Why is basin based study necessary for controlling floods in Himalayan rivers?HardLevel 34What is the benefit of studying source confluence tributaries and delta together in Himalayan river systems?HardLevel 34What is the most balanced way to study Himalayan rivers?HardLevel 34Why is it necessary to understand upper-course erosion and lower-course deposition together in Himalayan rivers?ExpertLevel 31