Q. In which year Indira Gandhi canal construction was started?
Answer: 1955
Notes: The Indira Gandhi Canal is the longest 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 northwest of Rajasthan state. Its construction began in 1952 and work went till 2010.