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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 42 · drainage,rivers,erosion
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  1. Vertical erosion decreases and lateral erosion increases
  2. All erosion stops
  3. Only glacial erosion begins
  4. River only creates sea waves
Hard · Level 42 · drainage,rivers,levees
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  1. By wind blowing sand
  2. By coarse deposits settling near banks during floods
  3. By salty sea water
  4. By river reversal due to earthquake
Hard · Level 42 · drainage,rivers,irrigation
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  1. Because it provides regular water supply
  2. Because it damages all crops
  3. Because it has no silt
  4. Because it flows only in deserts
Hard · Level 42 · drainage,rivers,river-projects
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  1. Only fishing
  2. Irrigation, power, flood control and water supply
  3. Only creating tourist spots
  4. Only cutting forests
Hard · Level 42 · drainage,rivers,floods
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  1. Because floods always remove cities
  2. Because floods cause no change
  3. Because floods also deposit alluvial soil
  4. Because floods end the river
Hard · Level 42 · drainage,rivers,economy
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  1. By supporting agriculture, energy, fisheries and trade
  2. By stopping all industries
  3. By always making water availability zero
  4. By making all soil barren
Hard · Level 42 · drainage,rivers,basin
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  1. Because it shows a unit for water resources and land use
  2. Because it only shows mountain height
  3. Because it has no human activity
  4. Because it measures sea depth
Hard · Level 42 · drainage,role of rivers,river water use,ecological imbalance,water conservation
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  1. Reduced river flow and ecological imbalance
  2. Increased salinity in river deltas and degradation of wetlands
  3. Permanent increase in the river's water-holding capacity
  4. River water becoming automatically purified and drinkable
Hard · Level 42 · drainage,rivers,deforestation
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  1. Trees slow runoff and bind soil
  2. Trees make the river saline
  3. Trees stop ocean tides
  4. Trees turn the river bed into iron
Hard · Level 42 · drainage,rivers,floodplain-expansion
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  1. Steep slope and deep cutting
  2. Gentle slope, frequent floods and lateral erosion
  3. Only freezing of glacier
  4. Complete distance from the sea
Hard · Level 42 · drainage,rivers,oxbow-lake
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  1. Lagoon lake
  2. Glacial lake
  3. Oxbow lake
  4. Tectonic lake
Hard · Level 42 · drainage,rivers,transportation
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  1. Deposition
  2. Transportation
  3. Condensation
  4. Explosion
Hard · Level 42 · drainage,rivers,river valleys,lateral erosion,erosion,geography class 9
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  1. Lateral erosion
  2. Vertical erosion
  3. Volcanic deposition
  4. Snowfall
Hard · Level 42 · drainage,rivers,trade
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  1. Due to water and transport facilities
  2. Due to closure of all routes
  3. Due to absence of farming near rivers
  4. Due to constant earthquakes
Hard · Level 42 · drainage,rivers,velocity
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  1. Erosion
  2. Deposition
  3. Evaporation
  4. Condensation
Hard · Level 42 · drainage,rivers,role
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  1. Forming alluvial plains and causing floods
  2. Only building mountains and drying seas
  3. Only stopping rain and making wind
  4. Only making minerals and shining the sun
Hard · Level 42 · drainage,rivers,water pollution,drinking water,river contamination,water treatment
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  1. When industrial and domestic waste enters it
  2. When the river originates in the mountains
  3. When the amount of natural silt in the river increases
  4. When trees grow along the riverbanks
Hard · Level 42 · drainage,rivers,fisheries
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  1. They provide aquatic habitat and nutrients
  2. They grow fish on land
  3. They always close the sea
  4. They permanently turn water into ice
Hard · Level 42 · drainage,rivers,dams
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  1. Silt and water flow may decrease
  2. River always flows backward
  3. The sea dries immediately
  4. Rainfall stops completely
Hard · Level 42 · drainage,rivers,delta-deposition
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  1. Long-term deposition
  2. Rapid glacial erosion
  3. Underground fire
  4. Atmospheric pressure