1. Which is Largest forest state of India ?

Answer: M.P.

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

Answer: Sikkim

3. 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.

4. Which is smallest continent of world ?

Answer: Australia

5. Where is largest Archipelago ?

Answer: Indonesia

6. Longest rail tunnel in the world ?

Answer: Seikan Tunnel (Japan - 53.9 Km)

7. Which is Largest railway route in India ?

Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu.