40 Questions
Which of the following is the primary reason for the formation of the Wular lake in Jammu and Kashmir?
Tectonic activity
Which of the following lakes is the largest freshwater lake in India?
Wular Lake
Which of the following best describes the Sambhar Lake in Rajasthan?
A saltwater lake used for salt production
Which one of the following rivers flows through a rift valley?
Tungabhadra
In the context of Indian rivers, what is a significant difference between the Himalayan and Peninsular rivers?
Himalayan rivers have steep gradients and V-shaped valleys, while Peninsular rivers have gentle gradients and U-shaped valleys.
What is the primary purpose of the National River Conservation Plan (NRCP)?
To conserve and clean up polluted rivers
Which of the following is a key environmental impact of lakes in India?
Promotion of tourism and water sports
Why does the Brahmaputra in its Tibetan part have less silt despite a longer course?
The Brahmaputra flows through rocky terrain in Tibet that reduces erosion.
Which two Peninsular rivers flow through troughs?
Narmada and Godavari
Which of the following lakes is NOT created by human beings?
Wular Lake
Which of the following is NOT a way in which lakes are formed?
Tectonic plate movements
What percentage of the world's surface is covered by freshwater that is not trapped as ice?
0.75%
According to the passage, which of the following is an example of a lake formed by river action?
An ox-bow lake
Which of the following Indian cities would likely be less attractive to tourists without its lake?
Srinagar
Based on the information in the passage, which of the following statements is true about lakes in India?
Lakes in semi-arid regions of inland drainage contain water only during the rainy season
Which of the following is NOT a benefit provided by lakes?
Serving as a breeding ground for mosquitoes and other disease vectors
Which of the following is a natural lake in India?
Wular Lake
Which of the following is NOT a significant factor contributing to river pollution?
Hydroelectric power generation
Which of the following is a primary objective of the National River Conservation Plan (NRCP) in India?
Improving water quality through pollution abatement measures
Which of the following statements about lakes is NOT true?
Lakes have no impact on the climate of their surroundings
What is the primary factor that determines the perennial nature of the Himalayan rivers?
The melting of snow from the lofty mountains
Which of the following is the primary function of a water divide?
To separate two drainage basins
Which of the following is a key characteristic of the Himalayan rivers that distinguishes them from the Peninsular rivers?
All of the above
What is the primary function of a drainage basin?
To collect and channel water from a specific area
What is the primary difference between the Himalayan and Peninsular rivers in terms of their water sources?
The Himalayan rivers receive water from both rainfall and snowmelt, while the Peninsular rivers receive water primarily from rainfall
Which of the following factors primarily contributes to the formation of oxbow lakes in India?
Lateral erosion and meandering of rivers
Which of the following lakes in India is known for its unique double salt composition?
Sambhar Lake
Which of the following lakes is considered a Ramsar Site, recognized for its international importance under the Ramsar Convention?
Chilika Lake
What is the primary reason for the depletion of the Loktak Lake, a freshwater lake in Manipur?
Siltation due to deforestation
Which of the following lakes is known for its unique floating reed islands, locally called phumdis?
Loktak Lake
What is the primary environmental concern associated with the Vembanad Lake, a large brackish lagoon in Kerala?
Salinization due to seawater intrusion
Which of the following lakes is a tectonic lake, formed due to tectonic activity and faulting?
Nainital Lake
Which of the following is a potential environmental impact of the eutrophication of lakes in India?
Depletion of dissolved oxygen levels
Which of the following is a primary objective of the National Wetland Conservation Programme (NWCP) in India?
Conserving and protecting wetland ecosystems
Which of the following is a potential impact of the invasive species in lake ecosystems in India?
Disruption of the native food web and biodiversity
Which of the following is not a characteristic of Chilika Lake?
It is a freshwater lake
What is the primary cause of the formation of Sambhar Lake?
Evaporation of seawater
Which of the following lakes is known for its migratory bird population?
All of the above
Which of the following is a major threat to the conservation of Indian lakes?
All of the above
What is the primary function of lakes in the ecosystem?
All of the above
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.
Explore the different types of lakes found in India, including seasonal salt water lakes like Sambhar Lake and freshwater lakes of glacial origin. Learn about the formation of lakes in the Himalayan region and the impact of tectonic activity on lakes like Wular Lake in Jammu and Kashmir.
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