What is common to the places known as Aliyar, Isapur and Kangsabati?

The Agreement of Kosi Irrigation and Hydroelectricity Plan in 1954 was signed between which two countries?

Mahakali Treaty is signed between India and which of the following countries?

The Almatti dam is on the river :

On which river is the Hirakud Dam constructed?

The Kalpasar Project, a fresh water reservoir is located in-