351. Who first discovered how blood circulates in the human body?
A: Joseph Lister
B: Edward Jenner
C: William Harvey
D: Gregor Mendel
352. At what angle above the horizon must the sun be to create a rainbow?
A: 60 degrees
B: 90 degrees
C: 40 degrees
D: 65 degrees
353. Which two organs or glands are affected by malaria?
A: Spleen and liver
B: Lungs and heart
C: Kidneys and lungs
D: Heart and brain
354. The planet of the solar system which has the maximum number of moons is:
A: Jupiter
B: Venus
C: Saturn
D: Uranus
355. Sun is a:
A: Planet
B: Aurora
C: Satellite
D: None of them
356. The age of the solar system is:
A: 4.5 Billion years
B: 5.5 Billion years
C: 6.5 Billion years
D: 7.5 Billion years
357. A unit length equal to the average distance between the Earth and the sun is called:
A: Light year
B: Astronomical unit
C: Parsec
D: Parallax
358. An Eclipse of the sun occurs when:
A: The moon is between the sun and the earth
B: The sun is between the earth and the moon
C: The earth is between the sun and the moon
D: None of the above
359. The ozone layer protects the earth from rays sent down by the sun:
A: Ultraviolet rays
B: Infrared rays
C: Gamma Rays
D: None of these
360. The Ozone layer is present about 30 miles (50 KM) in the atmosphere above the earth. The stratum (Layer) of the atmosphere in which the ozone layer lies is called:
A: Exosphere
B: Mesosphere
C: Stratosphere
D: Ionosphere
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