Which is the tallest building in the world?

a) Burj Khalifa

b) Shanghai Tower

c) Makkah Royal Clock Tower

d) Lotte world tower (more…)

Which is the largest river in the world by length?

a) Nile River

b) Amazon River

c) Yangtze River

d) Mississippi River (more…)

a) New Delhi

b) Dhaka

c) Karachi

d) Tokyo (more…)

a) Borneo

b) Madagascar

c) Baffin Island

d) Greenland (more…)

a) Copper

b) Aluminum

c) Tungsten

d) Silver (more…)

a) Photosphere

b) Core

c) Convective zone

d) Radiative zone (more…)