Two grams of radioactive substance is reduced to 0.25 gm during a period of 60 days. The half-life period is
A.10 days
B.15 days
C.20 days
D.30 days
Category: Nuclear Engineering Mcqs
The number of protons in the nucleus 92U235 is
A.327
B.92
C.235
D.143
Unit negative charge and negligible mass are the characteristics of
A.electrons
B.protons
C.neutrons
D.mesons
The mass number of an element is 40 and atomic number 20. The ratio of neutrons to protons is
A.1:10
B.1:20
C.2:10
D.none of the above
The phenomenon of fusion is responsible for the energy radiated by
A.the sun
B.the atom bomb
C.the firefly
D.lightning
Anions are formed from neutral atoms by
A.loss of electrons
B.loss of protons
C.gain of electrons
D.gain of protons
The electron is identical with
A.hydrogen ion
B.positron
C.an ?-ray particle
D.an ?-ray particle
The nuclide 91X234 is the Beta decay product of
A.92A234
B.91B235
C.90C234
D.93C238
The radioactive isotope of hydrogen is called
A.protium
B.deuterium
C.tritium
D.ortho-hydrogen
The neutron carries
A.no electric charge
B.a single positive charge
C.a single negative charge
D.double negative charge
