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Questions and Answers
Which of the following is the primary reason for the formation of the Wular lake in Jammu and Kashmir?
Which of the following is the primary reason for the formation of the Wular lake in Jammu and Kashmir?
- Tectonic activity (correct)
- River damming
- Seasonal water flow
- Glacial activity
Which of the following lakes is the largest freshwater lake in India?
Which of the following lakes is the largest freshwater lake in India?
- Loktak Lake
- Dal Lake
- Wular Lake (correct)
- Kolleru Lake
Which of the following best describes the Sambhar Lake in Rajasthan?
Which of the following best describes the Sambhar Lake in Rajasthan?
- A saltwater lake used for salt production (correct)
- A lake created by tectonic activity
- A lake formed by river damming
- A freshwater lake of glacial origin
Which one of the following rivers flows through a rift valley?
Which one of the following rivers flows through a rift valley?
In the context of Indian rivers, what is a significant difference between the Himalayan and Peninsular rivers?
In the context of Indian rivers, what is a significant difference between the Himalayan and Peninsular rivers?
What is the primary purpose of the National River Conservation Plan (NRCP)?
What is the primary purpose of the National River Conservation Plan (NRCP)?
Which of the following is a key environmental impact of lakes in India?
Which of the following is a key environmental impact of lakes in India?
Why does the Brahmaputra in its Tibetan part have less silt despite a longer course?
Why does the Brahmaputra in its Tibetan part have less silt despite a longer course?
Which two Peninsular rivers flow through troughs?
Which two Peninsular rivers flow through troughs?
Which of the following lakes is NOT created by human beings?
Which of the following lakes is NOT created by human beings?
Which of the following is NOT a way in which lakes are formed?
Which of the following is NOT a way in which lakes are formed?
What percentage of the world's surface is covered by freshwater that is not trapped as ice?
What percentage of the world's surface is covered by freshwater that is not trapped as ice?
According to the passage, which of the following is an example of a lake formed by river action?
According to the passage, which of the following is an example of a lake formed by river action?
Which of the following Indian cities would likely be less attractive to tourists without its lake?
Which of the following Indian cities would likely be less attractive to tourists without its lake?
Based on the information in the passage, which of the following statements is true about lakes in India?
Based on the information in the passage, which of the following statements is true about lakes in India?
Which of the following is NOT a benefit provided by lakes?
Which of the following is NOT a benefit provided by lakes?
Which of the following is a natural lake in India?
Which of the following is a natural lake in India?
Which of the following is NOT a significant factor contributing to river pollution?
Which of the following is NOT a significant factor contributing to river pollution?
Which of the following is a primary objective of the National River Conservation Plan (NRCP) in India?
Which of the following is a primary objective of the National River Conservation Plan (NRCP) in India?
Which of the following statements about lakes is NOT true?
Which of the following statements about lakes is NOT true?
What is the primary factor that determines the perennial nature of the Himalayan rivers?
What is the primary factor that determines the perennial nature of the Himalayan rivers?
Which of the following is the primary function of a water divide?
Which of the following is the primary function of a water divide?
Which of the following is a key characteristic of the Himalayan rivers that distinguishes them from the Peninsular rivers?
Which of the following is a key characteristic of the Himalayan rivers that distinguishes them from the Peninsular rivers?
What is the primary function of a drainage basin?
What is the primary function of a drainage basin?
What is the primary difference between the Himalayan and Peninsular rivers in terms of their water sources?
What is the primary difference between the Himalayan and Peninsular rivers in terms of their water sources?
Which of the following factors primarily contributes to the formation of oxbow lakes in India?
Which of the following factors primarily contributes to the formation of oxbow lakes in India?
Which of the following lakes in India is known for its unique double salt composition?
Which of the following lakes in India is known for its unique double salt composition?
Which of the following lakes is considered a Ramsar Site, recognized for its international importance under the Ramsar Convention?
Which of the following lakes is considered a Ramsar Site, recognized for its international importance under the Ramsar Convention?
What is the primary reason for the depletion of the Loktak Lake, a freshwater lake in Manipur?
What is the primary reason for the depletion of the Loktak Lake, a freshwater lake in Manipur?
Which of the following lakes is known for its unique floating reed islands, locally called phumdis?
Which of the following lakes is known for its unique floating reed islands, locally called phumdis?
What is the primary environmental concern associated with the Vembanad Lake, a large brackish lagoon in Kerala?
What is the primary environmental concern associated with the Vembanad Lake, a large brackish lagoon in Kerala?
Which of the following lakes is a tectonic lake, formed due to tectonic activity and faulting?
Which of the following lakes is a tectonic lake, formed due to tectonic activity and faulting?
Which of the following is a potential environmental impact of the eutrophication of lakes in India?
Which of the following is a potential environmental impact of the eutrophication of lakes in India?
Which of the following is a primary objective of the National Wetland Conservation Programme (NWCP) in India?
Which of the following is a primary objective of the National Wetland Conservation Programme (NWCP) in India?
Which of the following is a potential impact of the invasive species in lake ecosystems in India?
Which of the following is a potential impact of the invasive species in lake ecosystems in India?
Which of the following is not a characteristic of Chilika Lake?
Which of the following is not a characteristic of Chilika Lake?
What is the primary cause of the formation of Sambhar Lake?
What is the primary cause of the formation of Sambhar Lake?
Which of the following lakes is known for its migratory bird population?
Which of the following lakes is known for its migratory bird population?
Which of the following is a major threat to the conservation of Indian lakes?
Which of the following is a major threat to the conservation of Indian lakes?
What is the primary function of lakes in the ecosystem?
What is the primary function of lakes in the ecosystem?
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Study Notes
Formation of Lakes and Rivers
- The Wular lake in Jammu and Kashmir was formed primarily due to tectonic activity.
- The largest freshwater lake in India is Wular Lake.
Characteristics of Lakes and Rivers
- Sambhar Lake in Rajasthan is a saltwater lake.
- The Narmada River flows through a rift valley.
- Himalayan rivers have a perennial nature due to their glacial origin, whereas Peninsular rivers are seasonal, relying on rainfall.
- The Brahmaputra River in its Tibetan part has less silt despite a longer course due to the cold climate.
Peninsular Rivers
- The Narmada and Tapti rivers flow through troughs.
Lakes Formation
- The Wular Lake is an example of a lake formed by tectonic activity.
- The Dal Lake is an example of a lake formed by river action.
Environmental Impact
- One of the key environmental impacts of lakes in India is eutrophication.
- A significant difference between the Himalayan and Peninsular rivers is their water sources, with Himalayan rivers having a glacial origin and Peninsular rivers relying on rainfall.
- The primary environmental concern associated with the Vembanad Lake is eutrophication.
Conservation Plans
- The primary purpose of the National River Conservation Plan (NRCP) is to improve the water quality of rivers.
- The primary objective of the National Wetland Conservation Programme (NWCP) is to conserve wetlands.
- One of the primary objectives of the National River Conservation Plan (NRCP) is to reduce pollution.
Lakes in India
- The Loktak Lake is a freshwater lake known for its unique floating reed islands, locally called phumdis.
- The Chilika Lake is known for its migratory bird population.
- The Dal Lake is a significant tourist attraction.
- The Vembanad Lake is a large brackish lagoon in Kerala.
Miscellaneous
- Only 2.5% of the world's surface is covered by freshwater that is not trapped as ice.
- A water divide is a ridge of land that separates two drainage basins.
- The primary function of a drainage basin is to collect and channel water to a single outlet.
- A key characteristic of the Himalayan rivers is their perennial nature.
- Oxbow lakes are formed primarily due to tectonic activity and changes in river course.
- The Sambhar Lake is known for its unique double salt composition.
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