1. Which is smallest state by area of India ?

Answer: Goa

2. 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.

3. Which is Highest Award in India ?

Answer: Bharat Ratna

4. Which is the lightest gas ?

Answer: Hydrogen

5. Which is the longest Platform ?

Answer:

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

6. Which is the deepest lake of the world ?

Answer: Lake Baikal

7. Which is Longest national highway of India ?

Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km)