Exercise: General Science

Questions for: General Science

Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
A:
Thorium
B:
Radium
C:
Plutonium
D:
Radan
Answer: A
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Mesons are found in
A:
Laser beam
B:
X-rays
C:
Gamma rays
D:
Cosmic rays
Answer: D
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The wavelength of X-rays is of the order of
A:
10 micron
B:
1 angstrom
C:
1 cm
D:
1 m
Answer: B
1 angstrom = 1.0 x 10-10 meters
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Isotopes are separated by
A:
crystallisation
B:
sublimation
C:
distillation
D:
filtration
Answer: C
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In an atomic explosion, enormous energy is released which is due to
A:
conversion of chemical energy into heat energy
B:
conversion of mechanical energy into nuclear energy
C:
conversion of mass into energy
D:
conversion of neutrons into protons
Answer: C
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