Q. Which of the following river is known for changing its route?
Answer:
Kosi
Notes: Kosi river is known for changing its route. It is also known as "Sorrow of Bihar". It is a tributary of the River Ganga. It flows through Nepal, Bihar and causes immense flooding due to frequent shifting of its course that is attributed to the youthful topography of the river. It carries huge amount of water and sediments and when it enters plains it changes its coarse regularly and huge amount of sediments deposit in very less time. This further leads to overflow of water and this overflow of water causes devastating floods in Bihar specially in Monsoons.