Question

The big Himalayan River’s joining the Ganga downstream of Allahabad from west to east are_______
A) Gandak, ghagra, gomti and kosi
B) Gomti, Ghaghara, gandak and kosi
C) Ghagra, gomti, kosi and gandak
D) None of these

Answer 1

Hint:The Ganga is an Asian cross-border river that flows through India and Bangladesh.
The 2,704 km (1,680 mi) river flows south and east through the Gangetic Plain of India and Bangladesh, eventually emptying into the Bay of Bengal, originated from the Gangotri Glacier in the western Himalayas in the Indian state of Uttarakhand.

Complete answer:
The Ganges rises on the Indian side of the frontier with the Tibet Autonomous Region of China in the southern Great Himalayas. In the mountainous area of northern Uttarakhand state, its five headstreams, the Bhagirathi, the Alaknanda, the Mandakini, the Dhauliganga, and the Pindar, all rise. Of these in a subglacial meltwater cave at the base of the Himalayan glacier known as Gangotri, the two major headstreams are the Alaknanda (the longer of the two), and the Bhagirathi, above sea level.
The river receives its two major right-bank tributaries south of Haridwar, now within the state of Uttar Pradesh:- the Yamuna River, which passes through the capital city of Delhi and then roughly parallels the southeast flow of the Ganges until joining it near Prayagraj, and the Tons, which flows north from the Vindhya Range in the state of Madhya Pradesh and enters the Ganges just below Prayagraj In Uttar Pradesh, the main left-bank tributaries are the Ramganga, the Gomati and the Ghaghara.
The Ganges next enters the state of Bihar, where the Gandak, the Burhi ("Old") Gandak, the Ghugri, and the Kosi rivers are its primary tributaries from the Himalayan region of Nepal to the north. The Son River is its most-important southern tributary. The river then skirts to the south along the Rajmahal Hills and flows southeast to Farakka, at the apex of the delta, in central West Bengal state.
West Bengal is the last Indian state to join the Ganges, after which it flows into Bangladesh.

Hence the correct answer is option B.

Note:The 'Namami Gange Programme' is an Integrated Conservation Mission approved by the Union Government as 'Flagship Programme' in June 2014 with a budget allocation of Rs. 20,000 Crore to achieve the twin goals of successful pollution control, conservation and rejuvenation of the National River Ganga.