Step 1: Rajasthan has both saline and freshwater lakes. The saline lakes mainly lie in the arid west and central parts. Step 2: Sambhar (Jaipur–Nagaur) is India's largest inland saltwater lake. Didwana (Nagaur) and Pachpadra (Barmer) are also salt-producing lakes. Step 3: Pichola, in Udaipur, is an artificial freshwater lake (built in the 14th century and expanded by Maharana Udai Singh II), used for drinking water and boating. Answer: Pichola.