The Indus River is one of the major river systems in South Asia, flowing through China, India, and Pakistan. A tributary is a river or stream that flows into a larger river. The question asks for the largest tributary of the Indus River.

The correct answer is the Chenab River. It is the largest tributary of the Indus by volume and length. It originates in the Himalayas in India and flows through Jammu and Kashmir before entering Pakistan and joining the Indus.

Let's briefly look at the other options for comparison:

• Jhelum: A significant tributary but smaller than the Chenab.
• Ravi: Another important tributary, but again, not the largest.
• Sutlej: The longest tributary of the Indus, but it has less water discharge compared to the Chenab, making the Chenab the largest in terms of volume.

Related Topics

Understanding river systems and their tributaries is a key part of geography. The Indus River system is crucial for the agriculture and water supply of Pakistan and parts of India. Major dams and irrigation projects are built on these rivers.

Key Formulae

While this topic does not involve mathematical formulae, it is important to remember the geographical data:

• Indus River: Total length approximately 3,180 km.
• Chenab River: Length about 1,200 km; it is the largest tributary.