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General Science

General Science
The hardest substance available on earth is

Iron
None of the listed here
Gold
Diamond

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General Science
Nautical mile is a unit of distance used in:

Road mile
Measuring the boundaries of a nation
Astronomy
Navigation

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General Science
Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?

Thorium
Plutonium
Radan
Radium

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General Science
Which of the following is the lightest metal?

Mercury
Lead
Silver
Lithium

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General Science
Most soluble in water is

Camphor
Sugar
Common salt
Sulphur

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General Science
In an atomic explosion, enormous energy is released which is due to

Conversion of chemical energy into heat energy
Conversion of neutrons into protons
Conversion of mass into energy
Conversion of mechanical energy into nuclear energy

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