The Tirhut canal is a part of which irrigation project of Bihar?

The correct answer is C, the Gandak project. The Tirhut canal is the main eastern canal of the Gandak project and takes its name from the old Tirhut region of north Bihar. It leaves the Valmiki Nagar barrage and waters East and West Champaran, Muzaffarpur, Sitamarhi, Vaishali and Samastipur. The main western canal of the same project, the Saran canal, serves Saran, Siwan and Gopalganj and crosses into eastern Uttar Pradesh.

Option A, the Kosi project, has the Eastern Kosi Main Canal and the Western Kosi Canal, named after the river rather than a region. Option B, the Sone project, has the Eastern and Western Sone canals. Option D, the Durgavati project, is a reservoir scheme in Kaimur with a much smaller command. Learning the canal names with their projects, Tirhut and Saran for Gandak, is the quickest way to clear this family of questions.