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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 41 · upper course,downstream,river system
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  1. Sediment and water from the upper course reach downstream
  2. The upper course has no relation with downstream
  3. The upper course is always sea
  4. The upper course sends only air
Hard · Level 41 · natural flow,river health,downstream needs
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  1. It supports aquatic life sediment transport and downstream needs
  2. It immediately makes the river saline
  3. It floods all cities
  4. It always stops farming
Hard · Level 41 · dams,river flow,sediment
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  1. They only cause harm
  2. They only give benefits
  3. They provide water storage and power but can alter flow and sediment
  4. They send the river into the sky
Hard · Level 41 · drinking water,untreated river water,health
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  1. When water is clean and treated
  2. When water is polluted and untreated
  3. When water source is protected
  4. When water quality is tested
Hard · Level 41 · culture,river conservation,pollution
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  1. Because lack of cleanliness in cultural activities can increase pollution
  2. Because culture has no relation with rivers
  3. Because worship always dries rivers
  4. Because a river is only an industrial object
Hard · Level 41 · delta,agriculture,settlement
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  1. Alluvial soil water and flat land are available there
  2. Only rock and ice are found there
  3. The river never brings water there
  4. Settlement is permanently banned there
Hard · Level 41 · bank erosion,riparian vegetation,soil stability
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  1. Because roots stop holding the soil
  2. Because the Sun falls into the river
  3. Because the colour of water changes
  4. Because the river immediately becomes a lake
Hard · Level 41 · sediment supply,delta,coastal area
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  1. Deltas and coasts may receive less new sediment
  2. The coast will always rise
  3. The sea will become completely fresh
  4. Fish will start living in air
Hard · Level 41 · flood,disaster,human loss
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  1. When human settlements and property suffer major damage
  2. When only sediment is deposited
  3. When the river has clean water
  4. When banks have vegetation
Hard · Level 41 · sustainable use,river health,water management
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  1. Balance of water use river health and downstream needs
  2. Stopping all water upstream
  3. Increasing pollution
  4. Completely filling river banks
Hard · Level 41 · fisheries,water quality,river pollution,aquatic habitat,sustainable livelihood,role of rivers
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  1. Because polluted water harms fish habitats, breeding and survival
  2. Because fish can survive only in desert regions
  3. Because water quality has no relation to fish populations or health
  4. Because clean water drives fish out of a river
Hard · Level 41 · river erosion,valley formation,fluvial landforms,drainage,geomorphology
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  1. Erosion and valley formation
  2. Deposition and mountain building
  3. Evaporation and delta formation
  4. Condensation and meander erosion
Hard · Level 41 · deposition,flow energy,sediment
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  1. When flow energy decreases
  2. When slope is very high
  3. When the river is a fast mountain stream
  4. When there is no sediment at all
Hard · Level 41 · biomagnification,river pollution,food chain
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  1. When persistent toxic substances enter the food chain
  2. When only clean rainwater enters
  3. When bank vegetation remains protected
  4. When wastewater is fully treated
Hard · Level 41 · dam,sediment flow,reservoir
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  1. Sediment may get trapped behind the dam
  2. A dam never affects sediment
  3. A dam stops the sea
  4. A dam turns air into soil
Hard · Level 41 · river management,integrated approach,conservation
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  1. Considering water use pollution control flood safety and ecology together
  2. Only withdrawing more water
  3. Only dumping waste into the river
  4. Only increasing encroachment on banks
Hard · Level 41 · pollutants,downstream,aquatic life
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  1. Downstream water use and aquatic life
  2. Revolution of the Sun
  3. Height of the Himalayas
  4. Size of the Moon
Hard · Level 41 · river cities,urbanisation,flood risk
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  1. Water and transport are available but pollution and flood risk also increase
  2. Rivers always destroy cities
  3. Water is not available along rivers
  4. Cities have no relation with rivers
Hard · Level 41 · land use,river bank,farming
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  1. To consider flood erosion and water quality risks
  2. To completely stop the river
  3. To always make soil poisonous
  4. To keep crops away from water
Hard · Level 41 · shared resource,river water,water use
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  1. Many regions and users benefit from the same river
  2. River water belongs to only one person
  3. River water has no use
  4. River water is always unlimited