1. Which is longest tributary river of India ?

Answer: Yamuna

2. Which is the longest Platform ?

Answer:

Gorakhpur railway station, Uttar Pradesh, India (1355.40 meters)

3. Which is the largest Zoo in India ?

Answer: Zoological Gardens, Alipur, Kolkata

4. Which is largest Dam in World ?

Answer: Three Gorges (China)

5. Which is the longest rail tunnel in India ?

Answer: Pir Panjal (J&k, 11215 metre)

6. Which is the Densest populated State of India ?

Answer: West Bengal

7. Which is the biggest country in Area ?

Answer: Russia