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General Science

General Science
Which of the following is used as a moderator in nuclear reactor?

Ordinary water
Graphite
Radium
Thorium

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General Science
The average salinity of sea water is

3.5%
3%
4%
3.5%

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General Science
Washing soda is the common name for

Sodium Bicarbonate
Calcium Bicarbonate
None of the listed here
Sodium Carbonate

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General Science
Which of the following was to be discovered first in the chromospheres of the sun?

Xenon
Neon
Krypton
Helium

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General Science
What are metal bearing rocks called?

Bitumen
Metalloids
Ores
Bauxite

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General Science
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

Xenon
Krypton
Helium
Argon

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