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Subjects

Geography

Lakes

झीलें

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.

TOPIC PRACTICE

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Expert · Level 39 · geography,drainage,lakes
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  1. Water storage flow regulation and link with outflow
  2. Only mountain building
  3. Only desert expansion
  4. Only mineral excavation
Expert · Level 39 · geography,drainage,lakes
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  1. When pollution waterlogging or sudden outflow problems occur
  2. When a lake increases tourism
  3. When a lake provides habitat to birds
  4. When a lake stores water
Expert · Level 39 · geography,drainage,lakes
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  1. Reduction in water availability and biodiversity
  2. River flow always increasing
  3. All soils becoming fertile immediately
  4. Local temperature having no relation
Expert · Level 39 · geography,drainage,lakes
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  1. It naturally stores water
  2. It always remains empty
  3. It stores only sand
  4. It cannot exist without a river
Expert · Level 39 · geography,drainage,lakes
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  1. सांभर / राजस्थान की खारी झील / Sambhar / saline lake of Rajasthan
  2. डल / तमिलनाडु की खारी झील / Dal / saline lake of Tamil Nadu
  3. वुलर / ओडिशा का लैगून / Wular / lagoon of Odisha
  4. चिल्का / हिमनदी झील / Chilika / glacial lake
Expert · Level 39 · geography,drainage,lakes
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  1. Algal growth and decline in water quality
  2. Mountain formation
  3. Complete absence of salts
  4. River source always ending
Expert · Level 39 · geography,drainage,lakes
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  1. Flow regulation flood control water supply biodiversity tourism and fishing
  2. Only recreation
  3. Only saline water
  4. Only river erosion
Expert · Level 37 · drainage,lakes,river-system
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  1. Because lakes can regulate flow
  2. Because lakes are always connected to the sea
  3. Because lakes form only in deserts
  4. Because water in lakes never changes
Expert · Level 37 · wular,lakes,tectonic
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  1. It is entirely a volcanic crater lake
  2. It is a lake formed by tectonic activity
  3. It is a lake formed by desert wind
  4. It is formed only by a glacial terminal moraine
Expert · Level 37 · oxbow,lakes,meander
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  1. Straight river flow cuts rock to form a lake
  2. Sea waves completely close a river mouth
  3. A meander neck gets cut off to form a separate water body
  4. A glacier melts to form only a round crater
Expert · Level 37 · sambhar,saline-lake,rajasthan
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  1. It is the largest glacial lake of India
  2. It is an oxbow lake of the Brahmaputra
  3. It is a freshwater mountain lake
  4. It is a saline lake of Rajasthan and a salt production area
Expert · Level 37 · flood-control,lakes,storage
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  1. They make the river gradient zero
  2. They can temporarily store excess water
  3. They completely stop rainfall
  4. They remove ocean salinity
Expert · Level 37 · himalayan-lakes,glacial,origin
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  1. Only delta formation by rivers
  2. Deposition of desert sand
  3. Glacial erosion or glacial deposition
  4. Only sea tides
Expert · Level 37 · dry-season,lakes,river-flow
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  1. It forces the river to change direction completely
  2. It immediately turns the river valley into a desert
  3. It always increases pollution in the river
  4. It may help maintain flow by releasing water
Expert · Level 37 · nainital,lakes,climate
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  1. They can moderate temperature to some extent
  2. They completely end the monsoon
  3. They reduce the height of the Himalayas
  4. They make every place dry
Expert · Level 37 · saline-lake,inland-drainage,evaporation
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  1. Because outward drainage is high
  2. Because evaporation increases salt accumulation
  3. Because rainfall never occurs there
  4. Because river water has no salts
Expert · Level 37 · ecosystem,aquatic-life,lakes
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  1. They are only piles of stone and sand
  2. They are only parts of irrigation canals
  3. They can be habitats for aquatic plants and animals
  4. They always destroy biodiversity
Expert · Level 37 · lagoon,oxbow,classification
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  1. Both are only saline lakes
  2. Both form only by glaciers
  3. Both are only man-made
  4. A lagoon is coastal while an oxbow lake forms from a meander
Expert · Level 37 · siltation,lake-evolution,marsh
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  1. The lake may gradually become shallow and turn into a marshy area
  2. The lake immediately changes into a mountain
  3. The lake salinity always becomes zero
  4. The lake water always keeps becoming deeper
Expert · Level 37 · tourism,lakes,economy
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  1. Because lakes always create industrial waste
  2. Because they can also support local economy and employment
  3. Because lakes have no relation with humans
  4. Because tourism occurs only in deserts

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