1. Which is the longest road in India ?

Answer: Grand Trunk Road (2500 Km)

2. Which is Longest Dam in India ?

Answer: Hirakod Dam (Orissa)

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

Answer: Rajasthan

4. 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.

5. Which is largest Dam in World ?

Answer: Three Gorges (China)

6. What is the name of brightest star ?

Answer: Sirius

7. Where is largest Archipelago ?

Answer: Indonesia