Question

sabse bada Nahar kahan hai

Answer 1

Indira Gandhi Canal is the largest canal.

Answer 2

The Grand Canal, known to the Chinese as the Beijing–Hangzhou Grand Canal (Jīng-Háng Dà Yùnhé), a UNESCO World Heritage Site, is the longest as well as one of the oldest canal or artificial river in the world and a famous tourist destination. ...

The total length of the Grand Canal is 1,776 km (1,104 mi).