Q. Which is the longest canal in the world?
Answer: Grand Canal, China
Notes: The Grand Canal of China is the longest canal or the artificial river in the world. It is a UNESCO World Heritage Site. It links the Yellow River and Yangtze River. The total length of the canal is 1776 kilometres. This canal was constructed in sections from the 15th century BC onwards. This canal formed the main channel of communication and transportation for the Sui dynasty of the 7th century AD.