1. Which is Largest library in the world ?

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

2. Which is Biggest ocean in the world ?

Answer: Pacific ocean

3. Which is the longest Platform ?

Answer:

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

4. Which is Longest road tunnel in the World ?

Answer: Lærdal Tunnel (Norway - 24.51 kilometre)

5. Which is the smallest state of India by Population ?

Answer: Sikkim

6. Which is longest railway station ?

Answer: Grand Central Terminal, Chicago(USA).

7. What is the name of brightest star ?

Answer: Sirius