Consider the following tributaries of River Yamuna and arrange them from West to East:1.Betwa2.Ken3.Sindh4.ChambalSelect the correct answer from the codes given below.

1. A

   4, 3, 1 and 2

   (a) 4, 3, 1 and 2. West to east along the Yamuna’s right-bank plains the order is Chambal, Sindh, Betwa, Ken. That is the official key.

2. B

   1, 2, 3 and 4

   (b) 1, 2, 3 and 4. Betwa, Ken, Sindh, Chambal runs east-to-west in places and jumbles the westernmost Chambal.

3. C

   3, 2, 1 and 4

   (c) 3, 2, 1 and 4. Sindh then Ken then Betwa then Chambal is not west-to-east.

4. D

   2, 3, 1 and 4

   (d) 2, 3, 1 and 4. Starting with Ken (the easternmost of the four) reverses the required west-to-east walk.

Summary. Official key is (a). Yamuna tributaries from west to east: Chambal (4), Sindh (3), Betwa (1), Ken (2).