Which one of the following is a tributary of Barak River in Manipur?

Which one of the following is not a tributary of the Krishna river?

Which of the following rivers is not a tributary of the River Indus ?

Which one of the following rivers is not a tributary of Yamuna?

Which one of the following rivers is not a tributary of river Brahmaputra?

Which one of the following (Tributary - River) is not correctly matched?