Mention any two advantages of constructing dams

(a) Mention any two advantages of constructing dams.
(b) Name a dam which was a subject of much opposition from locals as well as NGO’s.
© Mention any three problems which may arise due to construction of large dams.

(a) Irrigation, producing electricity.
(b) Sardar Sarovar Dam on Narmada or Tehri Dam on Ganga.
© Social, environmental, economic.