1. Which is the longest Platform ?

Answer:

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

2. Which is Largest library in the world ?

Answer: United State Library of Congress, Washington D.C.

3. Which is Largest Dome in World ?

Answer: St. Peter's Basilica (Rome)

4. Which is Longest road tunnel in the World ?

Answer: Lærdal Tunnel (Norway - 24.51 kilometre)

5. Which is the state largest by area in India ?

Answer: Rajasthan

6. Which is the highest dam in India ?

Answer: Tehri Dam on Bhagirathi River in Uttarakhand (Height of 260 metres)

7. Which is the highest Plateau ?

Answer: Pamir, Tibet