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
Which effect increases due to heavy sediment load in the Ganga Brahmaputra delta?HardLevel 34Under which condition can alluvial fans form in Himalayan rivers?HardLevel 34How does alluvial soil formed by Himalayan rivers affect agriculture?HardLevel 34Which is the most accurate evidence of antecedent drainage in Himalayan rivers?ExpertLevel 31Indus and Brahmaputra cutting across the Himalayas to form deep valleys is the result of which process?ExpertLevel 31What is the most important combined reason for calling Himalayan rivers perennial?ExpertLevel 31What is the river-system significance of the Ganga being called Ganga after Devprayag?ExpertLevel 31Why are Jhelum, Chenab, Ravi, Beas and Satluj studied together in the Indus river system?ExpertLevel 31What is the correct basis for considering Yamuna a major tributary of the Ganga system?ExpertLevel 31Why are Ghaghara, Gandak and Kosi closely linked with floods in the Ganga system?ExpertLevel 31How are Chambal, Betwa and Son distinguished from Himalayan tributaries of the Ganga?ExpertLevel 31What does Brahmaputra being called Tsangpo in Tibet and Dihang in Arunachal show?ExpertLevel 31Why is the Brahmaputra relatively less silt-laden in Tibet but more silt-laden in Assam?ExpertLevel 31Which combined condition makes the Brahmaputra highly flood-prone in Assam?ExpertLevel 31What is the most scientific reason for the huge size of the Ganga-Brahmaputra Delta?ExpertLevel 31The division of the Ganga near Farakka clarifies which river concept?ExpertLevel 31Why is it important to understand Padma, Jamuna and Meghna in the correct sequence?ExpertLevel 31Meanders and oxbow lakes are more associated with which part of Himalayan rivers?ExpertLevel 31What is the correct sequence for the formation of natural levees by Himalayan rivers?ExpertLevel 31Which cause best explains the course-shifting tendency of the Kosi River?ExpertLevel 31