Q. On which river is the Bansagar Dam constructed?
Answer: Son
Notes: Bansagar Dam is built on the Son River in Madhya Pradesh. It is a multipurpose dam aiding irrigation, flood control, and power generation. The project is jointly managed by MP, UP, and Bihar. The Son River is a tributary of the Ganges and is one of the largest southern tributaries, making Bansagar an important regional infrastructure.