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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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Expert · Level 40 · river sediment,delta formation,deposition,river erosion,coastal landforms,drainage
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  1. The delta will receive less new deposit
  2. Erosion of the delta may increase
  3. The delta will always grow
  4. The river will automatically stop flowing towards the sea
Expert · Level 40 · encroachment,flood disaster,floodplain
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  1. It blocks flood spread and increases damage
  2. It completely cleans the river
  3. It never affects sediment
  4. It ends rainfall
Expert · Level 40 · tributaries,river network,catchment
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  1. They connect water sediment and catchment area to the main river
  2. They always close the main river
  3. They are not linked with drainage
  4. They separate a river from the sea
Expert · Level 40 · river valley,transport,seasonal flood
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  1. Slope water depth and seasonal floods
  2. Shape of the Moon
  3. Colour of the Sun
  4. Height of the sky
Expert · Level 40 · environmental flow,aquatic life,downstream
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  1. For aquatic life sediment transport and downstream needs
  2. To make the river permanently dry
  3. To stop all sediment
  4. To make the river a mine
Expert · Level 40 · groundwater recharge,permeable bed,seepage
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  1. A permeable bed lets water move downward
  2. A hard impermeable bed always gives more recharge
  3. River bed has no relation with water
  4. The bed forms only from sunlight
Expert · Level 40 · sand mining,river bed,habitat loss
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  1. River bed banks and aquatic habitat
  2. Earth's orbit
  3. Colour of sea tide
  4. Celestial bodies
Expert · Level 40 · industrial use,treated discharge,water quality
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  1. So that chemicals and dirty water do not pollute the river
  2. So that the river dries completely
  3. So that fish disappear
  4. So that floods always increase
Expert · Level 40 · urban water use,wastewater,recycling
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  1. Water saving wastewater treatment and recycling
  2. More waste dumping into river
  3. Encroachment on river banks
  4. Complete stopping of flow
Expert · Level 40 · river diversion,downstream,social impact
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  1. Agriculture and life may be affected by reduced water availability
  2. Downstream areas will always get more water
  3. All disputes will end
  4. River water will become unlimited
Expert · Level 40 · culture,environment education,river conservation
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  1. So that cleanliness and conservation increase with religious use
  2. So that waste increases in the river
  3. So that river water ends
  4. So that bank erosion increases
Expert · Level 40 · alluvial soil,agricultural pressure,soil quality
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  1. Excess chemicals and water use can reduce soil quality
  2. Alluvial soil is never affected
  3. River always keeps soil new
  4. Farming has no relation with soil
Expert · Level 40 · fisheries,livelihood,river ecology
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  1. It gives livelihood and depends on aquatic habitat
  2. It is only a game
  3. It is unrelated to river water
  4. It forms mountains
Expert · Level 40 · biomagnification,toxic pollutants,food chain
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  1. When persistent toxic substances enter the food chain
  2. When only clean water flows
  3. When vegetation grows on banks
  4. When waste is fully treated
Expert · Level 40 · catchment,soil conservation,river health
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  1. It reduces erosion and silt to protect river health
  2. It turns the river into stone
  3. It ends water use
  4. It stops rainfall
Expert · Level 40 · source to mouth,river course,system
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  1. It helps understand erosion deposition uses and risks in different parts
  2. The river name changes
  3. All parts become proven identical
  4. River water disappears
Expert · Level 40 · flood,natural process,disaster
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  1. Floods deposit sediment but become disasters when damage occurs
  2. Floods are never natural
  3. Floods always give only benefits
  4. Floods are unrelated to rivers
Expert · Level 40 · sustainable use,river health,downstream
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  1. Human need river health and downstream requirement
  2. Only maximum withdrawal
  3. Only industrial demand
  4. Only bank construction
Expert · Level 40 · green belt,runoff,pollution control
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  1. It can trap pollutants and soil from surface runoff
  2. It increases chemicals in the river
  3. It poisons water
  4. It dries the river
Expert · Level 40 · dam,delta,sediment trapping
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  1. Delta nourishment may reduce due to less sediment reaching it
  2. Delta will always grow rapidly
  3. Sea will stop retreating
  4. River will flow in air