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Subjects

Geography

Lakes

In Class 9 Geography, the topic “Lakes” explains how these water bodies form part of the drainage system and differ from rivers in their shape, movement, and location. Students learn about natural lakes formed by tectonic activity, glaciers, river courses, and coastal processes, as well as human-made reservoirs. Indian examples such as Wular, Dal, Sambhar, Chilika, and Kolleru help connect ideas with maps and landscapes. The topic also examines how lakes store water, support irrigation, hydropower, fisheries, biodiversity, tourism, and flood regulation.

Expert · Level 2 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Only by lake name
  2. Only by option length
  3. Through inflow, outflow, evaporation, recharge, and human use
  4. Only by ocean depth
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  1. When the bed and surrounding land allow infiltration
  2. When the bed is completely impermeable and dry
  3. When there is no water
  4. When all drains are polluted
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  1. Providing habitat to aquatic birds and biodiversity
  2. Every lake remaining completely dry
  3. Salinity always being zero
  4. Disappearance of all rivers
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  1. Eastern coast coastal lagoon and brackish water
  2. Kashmir tectonic lake and freshwater
  3. Rajasthan closed basin and salt production
  4. Manipur phumdis and floating habitat
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  1. The lake will become deeper and cleaner
  2. The lake will become shallow and algal growth may increase
  3. Every salt will disappear
  4. The lake will become a mountain peak
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  1. Both lake area and water volume can decrease
  2. The lake will always become larger and deeper
  3. Biodiversity will automatically increase
  4. Pollution will end
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  1. Uncontrolled tourism can increase waste and water pollution
  2. Tourism always makes a lake disappear
  3. Tourism has no relation with water
  4. Tourism makes all rivers flow backward
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  1. Sambhar Rajasthan saline lake
  2. Loktak Manipur phumdis
  3. Vembanad Kerala backwater
  4. Wular Kerala salt production
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  1. Accumulation of toxic substances in the food chain
  2. Immediate cleaning of the lake
  3. Disappearance of all sediment
  4. Stopping of evaporation
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  1. It can block small drains and inflow paths
  2. It blocks the Sun
  3. It turns every lake into a glacier
  4. It turns the sea into a mountain
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  1. When water quality worsens and habitats are destroyed
  2. When clean water remains available
  3. When shore plants remain protected
  4. When pollution sources are stopped
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  1. Control water use and increase recharge
  2. Withdraw all water at once
  3. Dump waste into the lake
  4. Fully concrete the shore
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  1. Tectonic activity and Wular
  2. River meander and Wular
  3. Salt production and Dal
  4. Phumdi and Sambhar
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  1. They also support birds organisms nutrient cycles and local livelihood
  2. They only store stones
  3. They never provide habitat to organisms
  4. They always remain completely dry
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  1. Human deforestation and construction can also increase sediment
  2. Sediment is never linked with humans
  3. All sediment comes from the sea
  4. Sediment always improves water quality
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  1. Chemical pollution is linked with toxic substances and nutrient pollution with excess nitrogen phosphorus
  2. Both are only sunlight
  3. Both always form glaciers
  4. Neither relates to water quality
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  1. It is only a desert saltwater lake
  2. It is a dynamic lake linked with floating phumdis and aquatic livelihood
  3. It is only a tectonic lake of Kashmir
  4. It is merely a seacoast lagoon
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  1. Their water level temperature and biological conditions can be affected by climate change
  2. They are completely separate from climate
  3. They always remain stable and unchanged
  4. They exist only on maps
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  1. Dissolved oxygen becomes very low after algal decomposition
  2. Only clean rainfall occurs
  3. Trees grow on the shore
  4. Clean river water enters
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  1. Local people can help prevent pollution monitor and use sustainably
  2. Local people always only damage lakes
  3. Community has no relation with water
  4. Lake conservation is possible only by satellite
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  1. Siltation and soil conservation in catchment
  2. Pollution and dumping waste
  3. Encroachment and filling shores
  4. Eutrophication and increasing nutrient waste
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  1. Water quality habitat condition pollution sources and water level
  2. Only size of the Sun
  3. Only mountain height
  4. Only average depth of oceans
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  1. Vembanad Lake
  2. Sambhar Lake
  3. Wular Lake
  4. Loktak Lake
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  1. They are linked with water resources biodiversity climate moderation livelihood and risk control
  2. They are only recreation sites
  3. They are only sources of saline water
  4. They are unrelated to drainage systems
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  1. Waste treatment catchment protection encroachment control and regulated water use
  2. Only increasing tourism and ignoring pollution
  3. Taking out all water immediately
  4. Dumping waste to create land

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