Multiple choice general knowledge The largest river island of world is located in the Brahmaputra Valley, Assam.It is Shilchar Karimganj Barak Majuli Reveal answer Fill a bubble to check yourself D Correct answer Explanation Majuli, located in the Brahmaputra River in Assam, is the world's largest river island. It covers approximately 880 square kilometers and is a recognized cultural heritage site.