Which Indian city, located in the north east, stands on the banks of the river Brahmaputra and is known as an important river port and tea centre?

Introduction / Context:
Indian cities are often identified by the rivers on which they stand, and this connection is frequently tested in geography questions. The Brahmaputra is one of the major rivers of north east India, and several towns and cities lie along its banks. This question asks about a specific city known as a river port and tea centre situated on the Brahmaputra.

Given Data / Assumptions:
• The river in focus is the Brahmaputra. • We must find a city that lies on its banks and is recognised as a river port and tea centre. • Options include Kanpur, Srinagar, Dibrugarh, Lucknow and Indore. • We assume basic familiarity with Indian river maps and city locations.

Concept / Approach:
The Brahmaputra flows mainly through the state of Assam in India. Dibrugarh, often called the tea city of India, is located along the Brahmaputra and functions as a river port. The approach is to recognise that cities like Kanpur and Lucknow are on the Ganga or Gomti, while Srinagar is on the Jhelum and Indore on smaller peninsular rivers.

Step-by-Step Solution:
Step 1: Identify that the Brahmaputra flows through Assam and some adjoining areas, so the relevant city should likely be in Assam. Step 2: From the options, Dibrugarh is a well known city in Assam, while Kanpur and Lucknow are in Uttar Pradesh, Srinagar in Jammu and Kashmir, and Indore in Madhya Pradesh. Step 3: Dibrugarh is situated on the southern bank of the Brahmaputra and is recognised for its tea gardens and river transport. Step 4: Kanpur lies on the Ganga, Srinagar on the Jhelum, Lucknow on the Gomti and Indore on the Saraswati and Khan rivers, not on the Brahmaputra. Step 5: Therefore, the correct answer is Dibrugarh.

Verification / Alternative check:
Maps of Assam show Dibrugarh located along the Brahmaputra river. Economic and geographic profiles of Dibrugarh highlight its role as a tea and river transport centre on the Brahmaputra. No standard reference lists Kanpur, Lucknow, Srinagar or Indore as cities on the Brahmaputra.

Why Other Options Are Wrong:
Kanpur: Lies on the Ganga river in Uttar Pradesh and is an industrial city, not a Brahmaputra port. Srinagar: Located on the Jhelum river in the Kashmir valley. Lucknow: Situated on the Gomti river, another tributary of the Ganga system. Indore: An inland city in Madhya Pradesh, not on the Brahmaputra, and not a river port of that system.

Common Pitfalls:
Learners sometimes pick a major city like Lucknow or Kanpur simply because they are more widely known, without checking which river actually flows through them. Another mistake is to assume that Srinagar, due to its lakes and rivers, might lie on Brahmaputra, but it is a part of the Indus basin, not the Brahmaputra basin. A good practice is to memorise at least one or two major cities along each important Indian river, such as Dibrugarh and Guwahati for Brahmaputra.

Final Answer:
The city located on the banks of the river Brahmaputra is Dibrugarh.