1. Which is the brightest planet ?

Answer: Venus

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 the highest dam in India ?

Answer: Tehri Dam on Bhagirathi River in Uttarakhand (Height of 260 metres)

4. Which is the shortest day in the year ?

Answer: December 22

5. Which is Highest Battle field ?

Answer: Siachin Glacier. Mastguru team Salutes to Indian soldiers.

6. Which is the lightest gas ?

Answer: Hydrogen

7. Which is Largest library in the world ?

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