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RAS question

Which of the following is NOT a tributary of the Indus River?

Correct answer: (D) Yamuna.

The Yamuna is a tributary of the Ganga, not a tributary of the Indus River.

  1. (A)

    Jhelum

  2. (B)

    Sutlej

  3. (C)

    Chenab

  4. (D)

    Yamuna

Explanation

The Yamuna belongs to the Ganga river system. The Central Water Commission's Yamuna Basin Organisation describes the Yamuna as a major tributary of the river Ganges, and also notes that it joins the Ganga at Prayag after its course. The standard Indus tributary set is Jhelum, Chenab, Ravi, Beas and Sutlej, often remembered through the Punjab or Panjnad association of five rivers. Jhelum, Chenab and Sutlej fit the Indus system, while Yamuna has to be placed under the Ganga system.

Why the other options are wrong

  • (A) Jhelum is one of the main tributaries of the Indus river system.
  • (B) Sutlej belongs among the main Indus tributaries and the five-river Punjab grouping.
  • (C) Chenab is part of the main Indus tributary set, along with Jhelum, Ravi, Beas and Sutlej.

Concept

River-system classification depends on separating the Indus and Ganga drainage systems. Major Himalayan rivers form core map-based geography for RAS and appear in both factual and elimination-style MCQs.

Source

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