Question

Majuli, the largest riverine island, is formed by the river …………………
a. Ganges (India)
b. Brahmaputra (India)
c. Amazon (brazil)
d. Araguaia (brazil)

Answer 1

Hint:
The riverine island is any land surrounded by river water. The river is a life that carries water from the high stream to the sea as known as downstream. River system contains a river and all of its tributaries. Rivers and streams start their lives as small creeks; it is called as headwaters. Tributary is the stream and small rivers that feed into the main river.


Complete step by step solution:
The riverine island is any land surrounded by river water. The river is a life that carries water from the high stream to the sea as known as downstream. River system contains a river and all of its tributaries. Rivers and streams start their lives as small creeks; it is called as headwaters. Tributary is the stream and small rivers that feed into the main river.

The total area of Majuli has been constantly decreasing due to strong erosion of the Brahmaputra river. The total area of this island has reduced from $2,82,165$ crest less than $886$ sq. km today.


Hence, the correct answer is option B.

Note:
The Brahmaputra river flows about $1,800$ miles through Tibet, India and Bangladesh. Brahmaputra river has rich iron content naturally, so it leads to red colour. China called Brahmaputra river as the Yarlung Tsangpo. In the year $2016$ , Assam government announced Majuli as a district.