UPSC Prelims 2021 Question:

With reference to India, Didwana, Kuchaman, Sargol and Khatu are the names of

Explanation: 

• In Rajasthan, Saline lakes are widely distributed. Didwana, Kuchaman, Sargol and Khatu are saline lakes and towns of Rajasthan. The key factors for the origin of saline lakes are aridity and formation of playa depressions. This is also supplemented by ephemeral drainage of centripetal type.
  
  
• Didwana is a major playa lake. Playas are little lakes with level bottoms and undrained basins where water collects after rain and quickly evaporates. This evaporation leads to an increase in salinity. The well-known Sambhar Lake which is India’s largest inland salt lake is also located in Rajasthan.
  
  

Therefore, option (4) is the correct answer.

Subject: Geography | Drainage System