Q. With which river is the Mandakini River a tributary?
Answer: Alaknanda
Notes: The Mandakini River originates near Kedarnath from the Chorabari glacier in Uttarakhand. It flows down to meet the Alaknanda River at Rudraprayag. The Alaknanda is one of the main headstreams of the Ganges. Mandakini is not connected to the Bhagirathi, Yamuna, or Dhauliganga rivers.