1. Which is smallest continent of world ?

Answer: Australia

2. Which is the shortest day in the year ?

Answer: December 22

3. Which is the highest Plateau ?

Answer: Pamir, Tibet

4. Which is the largest sea in the world ?

Answer:

Philippine Sea

5. What is the name of brightest star ?

Answer: Sirius

6. 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.

7. Which is the brightest planet ?

Answer: Venus