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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.

TOPIC PRACTICE

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Medium · Level 32 · distributaries,delta,river mouth
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  1. Because the river has no water
  2. Because glaciers freeze in mountains
  3. Because of desert winds
  4. The main stream divides into branches near the mouth
Medium · Level 32 · northern plains,alluvial deposition,himalayan rivers
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  1. By long term deposition of alluvial sediments
  2. By deposition of marine coral
  3. By flow of lava
  4. By movement of desert dunes
Medium · Level 32 · alluvial soil,agriculture,northern plains
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  1. It is always saline
  2. It is generally fertile
  3. It is only rock
  4. It forms only from lava
Medium · Level 32 · khadar,new alluvium,flood plain
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  1. Old volcanic ash
  2. Marine coral
  3. New alluvial deposits brought by floods
  4. Black lava soil
Medium · Level 32 · bhangar,khadar,alluvial soil
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  1. Bhangar is new and Khadar is old alluvium
  2. Both are marine soils
  3. Both are glaciers
  4. Bhangar is old and Khadar is new alluvium
Medium · Level 32 · meanders,plains,ganga
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  1. The flow becomes slow because slope is gentle
  2. The slope becomes very steep
  3. The river becomes a glacier
  4. The river rises from sea
Medium · Level 32 · upper course,lower course,erosion,deposition
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  1. Deposition upstream and gorge downstream
  2. Erosion upstream and deposition downstream
  3. Only glacier formation in both courses
  4. No river work in both courses
Medium · Level 32 · flood plains,alluvium,deposition
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  1. By sea waves
  2. By lava deposition
  3. By deposition of fine sediments during floods
  4. By spreading of glaciers
Medium · Level 32 · catchment,river basin,himalayan rivers
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  1. Water and sediment in the river may increase
  2. The river always dries up
  3. The river name changes
  4. The river flows backward from the sea
Medium · Level 32 · tributaries,himalayan rivers,sediments
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  1. Water and sediment increase in the main river
  2. The main river starts from the sea
  3. The main river always becomes underground
  4. The main river becomes a volcano
Medium · Level 32 · sediment load,delta,distributaries
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  1. Deposition and distributary development may increase
  2. The river becomes a glacier
  3. The river dries completely
  4. The river remains only straight
Medium · Level 32 · ganga system,large basin,tributaries
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  1. It is a small coastal system
  2. It is linked with a vast plain large basin and many tributaries
  3. It is only a closed basin
  4. It does no deposition
Medium · Level 32 · indus system,pakistan,northwest india
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  1. Nepal
  2. Bhutan
  3. Pakistan
  4. Bangladesh
Medium · Level 32 · alluvial fans,foothills,deposition
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  1. In very deep sea
  2. In the middle of desert
  3. Inside glacier
  4. Near the entry from mountains to plains
Medium · Level 32 · course shifting,floods,erosion
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  1. Floods and bank erosion
  2. Glacier formation
  3. Coral formation
  4. Volcanic eruption
Medium · Level 32 · sundarbans,ganga brahmaputra,deposition
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  1. Thar
  2. Sundarbans
  3. Kachchh
  4. Malwa
Medium · Level 32 · slope,velocity,plain rivers
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  1. Due to mixing with sea water
  2. Due to change in river name
  3. Because the slope becomes gentle
  4. Because there are no tributaries
Medium · Level 32 · floods,agriculture,alluvial soil
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  1. They make fields permanent ice
  2. They can deposit fertile alluvial soil
  3. They stop rainfall
  4. They separate the river from sea
Medium · Level 32 · northern plains,alluvial soil,fertility
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  1. Due to regular deposition of alluvial sediments
  2. Only due to sea salt
  3. Due to continuous lava flow
  4. Due to coral rocks
Medium · Level 32 · himalayan rivers,sediment load,erosion,drainage,physical geography
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  1. Intense erosion on the steep Himalayan slopes
  2. Mixing of seawater at the river mouth
  3. Evaporation of river water in desert regions
  4. Freezing of the entire river flow in winter