Water covers __________ of the Earth’s surface?

A. 61%
B. 67%
C. 71%
D. 76%

Which of the following disease is spread by Fleas?

A. Small pox
B. Tetnus
C. Typhus
D. Yellow fever

According to many, including the Guinness Book of World Record,________is the world’s rarest mineral?

A. Painite
B. Benitoite
C. Jadeite
D. Taaffeite

Which stone floats on water?

A. Pumice stone
B. Lime stone
C. Basalt stone
D. Quartzite stone

Echo is a ___________ of sound?

A. Reflection
B. Refraction
C. Interference
D. None

There is no connection of supernova explosion with___________?

A. Cosmic rays
B. Pulsars
C. The formation of heavy elements
D. Quasars

According to Einsteins general theory of relativity the universe:________________?

A. Must be expanding
B. Must be contracting
C. Must be either expanding or contracting
D. Must be neither expanding nor contracting

Which rays are trapped in our galaxy by magnetic waves?

A. Alpha rays
B. Gamma rays
C. Cosmic rays
D. None of these

The Sun is at an average distance of about________ million kilometers away from Earth?

A. 100 million
B. 150 million
C. 200 million
D. 250 million

What is the weight of the average human brain?

A. 1.2 to 1.4 kg
B. 1.4 to 1.8 kg
C. 2.1 to 2.8 kg
D. 3.1 to 3.4 kg