Which of the following are the north bank tributaries of the Brahmaputra River?
(i) Dikhow (ii) Jiabharali (iii) Kopili (iv) Sankosh

Correct option is C

The correct answer is (c) Only (ii) and (iv)
Explanation:
· Jiabharali (also known as Kameng) is a significant right bank or north bank tributary of the Brahmaputra River. It originates in the Himalayas in Arunachal Pradesh.
· Sankosh is also a major right bank or north bank tributary of the Brahmaputra. It originates in northern Bhutan and joins the Brahmaputra in Assam. 
Information Booster:
· North Bank Tributaries of the Brahmaputra, also known as right bank tributaries, generally originate in the Himalayas and are often characterized by steep slopes and boulder beds.
· Other important north bank tributaries include Subansiri, Manas, Teesta, and Siang (Dihang).
· These rivers are typically snow-fed in their upper reaches and receive significant monsoon runoff. 
Additional Knowledge: (i) Dikhow:
· The Dikhow River is a left bank or south bank tributary of the Brahmaputra River.
· It originates from the hills of Nagaland and flows through the Sivasagar district of Assam before joining the Brahmaputra at Dikhowmukh. 
(iii) Kopili:
· The Kopili River is also a left bank or south bank tributary of the Brahmaputra.
· It is the largest south bank tributary of the Brahmaputra in Assam.
· The Kopili originates in the Meghalaya plateau and flows through parts of Meghalaya and Assam.