By which river is the riverine island Majuli (Assam) formed?

The correct answer is Brahmaputra . Key Points 'Majuli' is the largest river island in the world . Majuli island is a large river island located in the middle of the 'Brahmaputra River ' in Assam . This island was formed due to a change in direction of the 'Brahmaputra River ' and its tributaries . The Brahmaputra river origin from the Manasarovar Lake in Tibet and flow through Tibet, India, and Bangladesh . The Godavari is the longest river of South India it is known as "The Ganges of the South". Additional Information The Kaveri river origin on the Brahmagiri range in the Western Ghats , of Kodagu district of the state of Karnataka . The Narmada River , also called the Reva and previously also known as Narbada or anglicised as Nerbudda , is the 5th longest river and overall longest west-flowing river in India . The Krishna River is a river in the Deccan plateau , and the third-longest river of India , after the Ganges and Godavari, and the fourth-largest in terms of water inflows and river basin area in India