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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

Quiz this set

Up to 20 questions from this page. Select your focus, then start.

20 questions

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Hard · Level 43 · geography,drainage,rivers
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  1. Water flow and bank erosion may become more uncontrolled
  2. Water will always stop
  3. Floodwater will disappear
  4. Banks will automatically become stronger
Hard · Level 43 · geography,drainage,rivers
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  1. Both water pollution and water scarcity
  2. Only mountain height
  3. Direction of the Sun
  4. Depth of the sea
Hard · Level 43 · geography,drainage,rivers
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  1. Flow may speed up and change flood risk downstream
  2. The river will always dry up
  3. Water quality will automatically become best
  4. Sediment formation will stop
Hard · Level 43 · geography,drainage,rivers
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  1. Excess irrigation may increase waterlogging or salinity
  2. Crops never grow with river water
  3. River water is always perfect
  4. River water cannot reach fields
Hard · Level 43 · geography,drainage,rivers
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  1. Strong vertical erosion in the upper course
  2. Only deposition in the lower course
  3. Effect of sea tides
  4. Completely still water
Hard · Level 43 · geography,drainage,rivers
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  1. They provide space for excess water to spread
  2. They always increase floods
  3. They stop the river
  4. They make water poisonous
Hard · Level 43 · geography,drainage,rivers
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  1. They can be carried invisibly by the river to a sea or lake
  2. They always become large stones on the river bed
  3. They stop river flow
  4. They only fly in air
Hard · Level 43 · geography,drainage,rivers
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  1. Only taking river water and dumping waste
  2. Catchment protection waste treatment environmental flow and public participation
  3. Increasing encroachment on all river banks
  4. Completely stopping natural flow
Hard · Level 43 · geography,drainage,rivers
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  1. They form landforms and influence human life economy and culture
  2. They flow only in the sky
  3. They are unrelated to human life
  4. They are only streams of saline water
Hard · Level 43 · geography,drainage,rivers
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  1. Physical actions economic uses ecological importance and conservation challenges
  2. Only river names and lengths
  3. Only harms of floods
  4. Only hydropower and nothing else
Expert · Level 40 · geomorphic force,erosion,deposition
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  1. They change landforms through erosion transport and deposition
  2. They change Earth's axis
  3. They only create air
  4. They turn seas into mountains
Expert · Level 40 · river basin,deforestation,sediment
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  1. By increasing sediment and flood risk
  2. By making sea water fresh
  3. By stopping the river permanently
  4. By turning soil into air
Expert · Level 40 · natural flow,aquatic habitat,biodiversity
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  1. Shrinking aquatic habitats and reducing biodiversity
  2. River immediately becoming an ocean
  3. End of all pollutants
  4. Sediment becoming gold
Expert · Level 40 · dams,hydropower,river management
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  1. Because they can alter flow sediment and aquatic life
  2. Because they always make water poisonous
  3. Because they turn rivers into air
  4. Because they stop rainfall
Expert · Level 40 · river water disputes,shared river basin,water availability,seasonal flow,resource distribution,interstate rivers
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  1. Because they also involve water availability, demand, seasonal flow, and shared river basins
  2. Because river water is available in unlimited quantities everywhere and in every season
  3. Because rivers do not cross the boundaries of states or regions
  4. Because river water is not used for irrigation, drinking water, or industry
Expert · Level 40 · floodplain,farming,flood risk
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  1. Fertile alluvial soil is available but floods can cause damage
  2. Water never comes there
  3. Soil always remains barren there
  4. River has no effect there
Expert · Level 40 · delta,sediment supply,sea currents
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  1. Sediment supply and strength of sea currents
  2. Moonlight and colour of air
  3. Vegetation and volcanic smoke
  4. Drinking water and salt production
Expert · Level 40 · upper course,vertical erosion,valley
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  1. Vertical erosion and valley formation
  2. Delta deposition
  3. Marine lagoon formation
  4. Salt production
Expert · Level 40 · river deposition,lower course,river gradient,flow energy,drainage,fluvial landforms
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  1. Decrease in slope and flow energy
  2. A great increase in water volume and velocity
  3. Erosion of only hard rocks by the river
  4. The river changing into a glacier
Expert · Level 40 · river pollution,water quality,health
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  1. Harm to drinking water irrigation fisheries and health
  2. Effect only on mountain height
  3. Changing the Sun's direction
  4. Always making soil fertile