Q. Which is the longest irrigation canal in India?
Answer: Indira Gandhi Canal
Notes: The Indira Gandhi Canal is the longest irrigation canal of India. It starts from the Harike Barrage at Harike, a few kilometers below the confluence of the Satluj and Beas rivers in the Indian state of Punjab and terminates in irrigation facilities in the Thar Desert in the north west of Rajasthan state.

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