Which among the following salts has the highest percentage in ocean water?

A. Sodium Chloride
B. Magnesium Chloride
C. Calcium Sulphate
D. Calcium Carbonate

Answer

Correct Answer: A. Sodium Chloride

Detailed About MCQs

The average salinity varies 33% – 37% in different oceans and seas.
SALTS PERCENTAGE (%) :
Sodium Chloride –  77.8
Magnesium Chloride – 10.9
Calcium Sulphate – 3.6
Calcium Carbonate – 0.3

Galileo was an Italian astronomer who:

A. developed the telescope
B. discovered four satellites of Jupiter
C. discovered that the movement of the pendulum produces a regular time measurement
D. All of the above

Answer

Correct Answer: D. All of the above 

Detailed About MCQs

Galileo was an Italian astronomer who developed the telescope, discovered four satellites of Jupiter, and discovered that the movement of the pendulum produces a regular time measurement. Galileo was an Italian astronomer, mathematician, physicist, philosopher, and professor who made pioneering observations of nature with long-lasting implications for the study of physics. He also constructed a telescope and supported the Copernican theory, which supports a sun-centered solar system.