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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.

Practice questions

If a lake has formed from an old river meander, what shape may it generally have?ExpertLevel 37 Which statement is most suitable regarding Pulicat Lake?ExpertLevel 37 Which combination is most correct regarding Dal Lake?ExpertLevel 37 In which situation can lake water become saline more quickly?ExpertLevel 37 Control of river flow by lakes is most possible due to which reason?ExpertLevel 37 In which type of lake is the influence of sea water more likely?ExpertLevel 37 After an oxbow lake forms, what change is seen in the main river flow?ExpertLevel 37 Which basis is best for understanding the basic difference between a lake and a reservoir?ExpertLevel 37 Which problem can occur due to excessive increase of nutrients in lakes?ExpertLevel 37 What is the proper reason for considering lake beauty as a geographical importance?ExpertLevel 37 If a river entering a lake brings high silt load, what is the most likely result?ExpertLevel 37 Which fact is most useful for remembering Wular Lake in India?ExpertLevel 37 What is the role of sand barriers in the formation of coastal lakes?ExpertLevel 37 Which option includes both economic and ecological importance of a lake?ExpertLevel 37 Which lake is counted among the major coastal lagoon lakes of India?ExpertLevel 37 What can be a major human cause of shrinking lakes over a long period without conservation?ExpertLevel 37 Compared with lakes, how is the movement of river water generally?ExpertLevel 37 The importance of bird sanctuaries associated with lakes is linked with what?ExpertLevel 37 The unsuitability of saline lake water for drinking is linked with which reason?ExpertLevel 37 Which statement best explains the relation between lakes and drainage systems?ExpertLevel 37