11 Which is the oldest freshwater lake in the world?
12 Which is the largest freshwater lake in the world on the basis of surface area?
13 Which is the World’s Largest Rough Diamond?
The Cullinan Diamond
14 What is the wolrd’s tallest Tsunami?
Lituya Bay (Alaska 9 July 1958), 1720 feet high
15 Which is the world highest waterfall?
Angel Falls (Salto Ángel)
16 Where is the world’s highest waterfall?
17 What is the height of Angel Falls?
18 Which is the world’s largest recorded earthquake?
9.5 Magnitude (May 22, 1960) Chile
19 Which is the deepest part of the ocean?
20 What is the depth of Challenger Deep?
10,994 meters (36,070 feet) below the sea level