1. Which is Longest Dam in India ?

Answer: Hirakod Dam (Orissa)

2. Which is the longest wall in world ?

Answer: Great wall of China

3. Which is longest railway station ?

Answer: Grand Central Terminal, Chicago(USA).

4. Which is longest tributary river of India ?

Answer: Yamuna

5. Which is smallest planet ?

Answer: Mercury

6. Which is the largest desert in India ?

Answer: Thar (Rajasthan)

7. Which is the largest sea in the world ?

Answer:

Philippine Sea