Question

A tributary of the river Ganga arising from the Central Indian Highlands is
__________.
A. Son
B. Koshi
C. Gandak
D. Tista

Answer 1

Hint: It is a trans-boundary river that moves through Tibet, Nepal, and India. It depletes the northern slants of the Himalayas in Tibet and the southern inclines in Nepal. The River is otherwise called Saptakoshi for its seven upper tributaries.

Complete answer:
The Koshi was likewise called Kausika in Rigveda, Nepal, and Bihar in northern India. It is a significant tributary of the Ganges. One significant tributary of the Koshi is the Arun, a lot of whose course is in Tibet. This river is referenced in the epic 'Mahabharata' as Kausiki. Previously, a few creators recommended that the river has moved its course for more than 133 km (83 mi) from east to west during the most recent 200 years. However, a survey of 28 authentic guides dating 1760 to 1960 uncovered a slight toward the east move for the long term, and that the moving was arbitrary and wavering in nature. The river bowl is encircled by edges that separate it from the Yarlung Tsangpo River in the north, the Gandaki in the west, and the Mahananda in the east. The river is joined by significant tributaries in the Mahabharat Range around 48 km (30 mi) north of the Indo-Nepal outskirt. Beneath the Siwaliks, the river has developed a megafan about 15,000 sq km (5,800 sq mi) in degree, breaking into more than 12 unmistakable channels, all with moving courses because of flooding. Its unstable nature has been credited to the substantial residue it conveys during the storm season, and flooding in India has outrageous impacts. Fishing is a significant endeavor on the river however fishing assets are being drained and youth are leaving for different regions of work.

Thus, option (B) is the correct answer.

Note: The Kosi River catchment covers six topographical and climatic belts differing in height from over 8,000 m (26,000 ft) to 95 m (312 ft). It includes the Tibetan level, the Himalayas, the Himalayan mid-slope belt, the Mahabharat Range, the Siwalik Hills, and also the Terai.