1. Which is highest dam in world ?

Answer:

Jinping-I Dam - 305 m (1,001 ft) in China on Yalong river.
Second Highest is Nurek Dam 300 m (980 ft) Tajikistan on Vakhsh river.

2. Which is Largest library in the world ?

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

3. Which is smallest state by area of India ?

Answer: Goa

4. Which is smallest continent of world ?

Answer: Australia

5. Which is smallest and largest bird ?

Answer: Smallest Bird is Humming Bird and Largest bird is Ostrich

6. Which state is largest by Population ?

Answer: Uttar Pradesh

7. Which is the longest Platform ?

Answer:

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