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Subjects

Geography

Role of Rivers

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.

Medium · Level 4 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Harsh climate and lack of water
  2. Farming, water and employment opportunities
  3. Only snowstorms
  4. Complete barrenness along river banks
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  1. Because the slope is gentle and flow is slower
  2. Because rocks always rise there
  3. Because the river flows backward there
  4. Because there is no water there
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  1. Only for changing colour
  2. For cooling, processing and energy
  3. For stopping all machines
  4. Only for cutting mountains
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  1. Aquatic habitats and sediment flow may be affected
  2. The Sun's temperature may decrease
  3. All mountains may become seas
  4. A river will start flowing in air
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  1. They carry surface water to seas and lakes
  2. They always stop rainfall
  3. They make evaporation impossible
  4. They turn clouds into stone
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  1. When flow speed and water volume increase
  2. When there is no water in the river
  3. Always due to a solar eclipse
  4. When the river's name changes
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  1. It stabilises banks and can reduce erosion
  2. It always dries the river
  3. It teaches fish to fly
  4. It turns water into stone
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  1. Agriculture
  2. Space travel
  3. Deep-sea mining
  4. Desert camel racing
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  1. Deposition
  2. Evaporation
  3. Erosion
  4. Salinisation
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  1. Drinking it directly without checking
  2. Making it clean and safe
  3. Always making it salty
  4. Completely burying it in soil
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  1. It carries excess water away from an area
  2. It always keeps water stagnant
  3. It buries clouds in the ground
  4. It carries only air
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  1. Because farming, water and transport facilities are available there
  2. Because there are no resources there
  3. Because only ice exists there
  4. Because farming is impossible there
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  1. To completely close the river
  2. To protect water quality, biodiversity and human use
  3. To make all floods beneficial
  4. To make all fields barren
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  1. Rivers are mainly harmful because they only cause floods
  2. Rivers are only useful and do not cause any environmental problems
  3. Rivers provide benefits such as water, irrigation and transport, but problems such as floods and pollution can also occur
  4. Rivers have no connection with human settlements, agriculture or the economy
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  1. There is no need for raw material and water
  2. Water and transport facilities may be available
  3. The river always makes industries tax-free
  4. The river runs machines without energy
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  1. Depositional process
  2. Volcanic process
  3. Glacial process
  4. Wind erosion process
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  1. Fishing
  2. Irrigation
  3. Mining
  4. Deforestation
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  1. Number and health of aquatic organisms may decline
  2. All organisms immediately increase
  3. Water always becomes richer in oxygen
  4. There is no change in the river
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  1. Due to low slope and sediment deposition, the course may change
  2. Because plains have no water
  3. Because a river flows only upward
  4. Because the Sun pushes the river
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  1. Because they do only one work
  2. Because they perform many functions like irrigation, power, flood control and water supply
  3. Because they make the river invisible
  4. Because they are made to stop farming
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  1. Risk of damage from floods
  2. Risk of solar eclipse
  3. Risk of Himalaya formation
  4. Risk of sea drying
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  1. It can form a clear physical line between two areas
  2. It always removes all boundaries
  3. It flows only inside the sea
  4. It makes maps useless
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  1. Because it is limited only to memorising names
  2. Because it explains the relation among landforms, resources and human life
  3. Because it changes all rules of Mathematics
  4. Because it is only a topic of marine animals
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  1. Silt deposition in floodplains and damage by floods
  2. Only formation of mountains
  3. Only rising of sea waves
  4. Only blowing dust in deserts
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  1. Because river valleys can provide scenic views, boating and cultural sites
  2. Because rivers stop all tourists
  3. Because river water is always poisonous
  4. Because rivers make mountains disappear

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