Article Detail Which is longest tributary river of India ? Answer: Yamuna Similar Questions : 1. Which is longest tributary river of India ? Answer: Yamuna 2. What is the name of tallest Animal ? Answer: Giraffe 3. What is the name of brightest star ? Answer: Sirius 4. Which is the longest day in the year ? Answer: June 21 5. Which is smallest continent of world ? Answer: Australia 6. Which is the largest Zoo in India ? Answer: Zoological Gardens, Alipur, Kolkata 7. Which is Biggest ocean in the world ? Answer: Pacific ocean Read more from - Longest and Largest