1. The Yamuna river is a tributary of which river? 2. The Cauvery river originates from which hills? 3. The Indus river originates from which place? 4. The Tapti river flows into which gulf? 5. The Sabarmati river flows through which major city? 6. Which is the only major river that flows entirely within India from west to east? 7. The Ganga river originates from which glacier? 8. The Krishna river originates from which state? 9. Which river is known as the 'Old Ganga' or 'Vridha Ganga'? 10. Which river forms the famous Dhuandhar Falls?