Name an important lake in Rajasthan. How is it useful? Share with your friends Share 0 Madhumita Das answered this Sambhar Lake in Rajasthan is the largest salt lake in India. It is a salt water lake and its water is utilised for producing salt. 0 View Full Answer Shareef answered this Luni is the only larfest river in rajasthan. More information are given in image. 1 Shareef answered this Oh sorry sambhar lake is in rajasthan.luni is river. 2