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Subjects

Geography

Role of Rivers

नदियों की भूमिका

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.

TOPIC PRACTICE

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Expert · Level 41 · geography,drainage,rivers
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  1. So that water extraction and polluted effluents remain controlled
  2. So that the river dries
  3. So that water always remains dirty
  4. So that the river mouth closes
Expert · Level 41 · geography,drainage,rivers
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  1. Flow velocity and downstream flood behaviour may change
  2. River water will become completely fresh
  3. Sediment formation will stop
  4. The river will never flow
Expert · Level 41 · geography,drainage,rivers
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  1. By temporarily storing excess water
  2. By stopping all rainfall
  3. By cutting the river from the sea
  4. By turning sediment into fire
Expert · Level 41 · geography,drainage,rivers
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  1. Because it helps maintain coastal deposits and deltas
  2. Because it dries the sea
  3. Because it forms glaciers on coasts
  4. Because it makes the river flow backward
Expert · Level 41 · geography,drainage,rivers
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  1. Decrease in fish and aquatic organisms
  2. Increase in trees on banks
  3. Water becoming clean
  4. Flow remaining natural
Expert · Level 41 · geography,drainage,rivers
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  1. Because the source region affects water flow and quality
  2. Because the source has no relation with the river
  3. Because a river forms only at its mouth
  4. Because the source is always in the sea
Expert · Level 41 · geography,drainage,rivers
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  1. It can nourish plains and aquatic ecosystems
  2. It makes every river poisonous
  3. It immediately ends water
  4. It turns river into mountain
Expert · Level 41 · geography,drainage,rivers
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  1. Capacity may reduce and flood risk may increase
  2. Capacity will always increase
  3. The river will disappear
  4. Rainfall will stop
Expert · Level 41 · geography,drainage,rivers
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  1. It can reduce pressure and supply water to floodplains and wetlands
  2. It always keeps the river dry
  3. It makes silt poisonous
  4. It stops the water cycle
Expert · Level 41 · geography,drainage,rivers
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  1. Sharing limited water among agriculture industry and domestic use can be difficult
  2. Because river water is never useful
  3. Because rivers flow only in seas
  4. Because all regions have equal water
Expert · Level 41 · geography,drainage,rivers,river erosion,floods,irrigation,alluvial soil
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  1. Floods and bank erosion along with irrigation and fertile alluvial soil
  2. Floods and bank erosion, but no benefit for agriculture
  3. Irrigation and fertile soil, but no risk of floods or erosion
  4. Only hydroelectric power generation, because rivers do not affect soil or agriculture
Expert · Level 41 · geography,drainage,rivers
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  1. Where a river enters a plain from mountains and loses velocity
  2. In the middle of deep sea
  3. Above the complete source of river
  4. Inside a polar ice sheet
Expert · Level 41 · geography,drainage,rivers
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  1. Because use requires water that is both sufficient and safe
  2. Because only the river name is needed
  3. Because water quantity has no importance
  4. Because quality always remains the same
Expert · Level 41 · geography,drainage,rivers
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  1. In the upper course where current is strong
  2. Only in calm delta water
  3. In air above the sea
  4. Only in a desert away from river
Expert · Level 41 · geography,drainage,rivers
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  1. Because they are directly involved in river use pollution control and conservation
  2. Because communities have no relation with rivers
  3. Because a river is only a government object
  4. Because people are not needed in conservation
Expert · Level 41 · geography,drainage,rivers
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  1. It forms valleys but bank erosion can also remove land
  2. It gives only benefits
  3. It only creates water
  4. It is unrelated to rivers
Expert · Level 41 · geography,drainage,rivers
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  1. Balanced water use waste treatment and catchment protection
  2. Maximum pollution and encroachment
  3. Stopping river flow everywhere
  4. Removing all bank vegetation
Expert · Level 41 · geography,drainage,rivers
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  1. Because it also affects floodplains deltas groundwater and human activities
  2. Because there is no water in the river channel
  3. Because the river never flows
  4. Because a river exists only on maps
Expert · Level 41 · geography,drainage,rivers
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  1. Erosion transportation deposition and human use
  2. Human use deposition solar eclipse and volcano
  3. Stopping rain stopping erosion drying river
  4. Only name source and length
Expert · Level 41 · geography,drainage,rivers
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  1. Rivers are dynamic systems linking life economy landforms and ecology
  2. Rivers are only sources of floods
  3. Rivers only provide drinking water
  4. Rivers are unimportant in geography