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
Which option correctly matches a lake with its origin?HardLevel 40How will deterioration of lake water quality affect fish farming?HardLevel 40What is the correct reason for studying lakes in the context of Ramsar sites?HardLevel 40How does plantation on lake shores help reduce siltation?HardLevel 40Which option gives the most correct relation between a lake and economic use?HardLevel 40Under which condition can a lake become a problem despite being a water resource?HardLevel 40What is the most accurate difference between a coastal lagoon and an inland saline lake?HardLevel 40What can be the most direct human made cause of biodiversity decline in lakes?HardLevel 40Which option incorrectly matches a lake with its type?HardLevel 40What can be a combined reason for reduction of flood absorption capacity in lakes?HardLevel 40Which lake is appropriate to identify as a unique wetland of Northeast India?HardLevel 40Which combined measure is most correct to protect both water quality and water quantity in lakes?HardLevel 40Entry of excess nutrients into lakes can increase from which source?HardLevel 40What is the main exam basis for studying Wular and Dal lakes together?HardLevel 40What practical effect can drying of lakes have on local society?HardLevel 40What is the main difference between Sambhar Lake and Chilika Lake?HardLevel 40Which problem can increase when water inflow decreases and evaporation increases in lakes?HardLevel 40Which condition is most necessary for sustainable fishing in lakes?HardLevel 40Which lake is correctly linked with both salt production and a dry region?HardLevel 40Why should location type and problem be studied together while studying lakes?HardLevel 40