1. The decay of Tc-99m to Tc-99g is an example of:
internal
conversion
neutrino production
isomeric transition
photoelectric effect
2.
After an atom has decayed by giving off a
negative beta particle and a gamma ray, the remaining atom is:
An atom of a new element
having an atomic number one higher than the old and with no or little change
in mass number.
An
atom of a new element having an atomic number one higher than the old and
with a significant lowering of mass number.
Unchanged
except it has now become stable
An
atom of a new element having an atomic number one less than the old and with
no or little change in mass number
3.
The literature value for the
b-
energy of Ca45 is 0.255 MeV. This represents:
The mean energy
The median energy
The maximum energy
The root mean square energy
4. In
b—
emission, the total decay energy is shared between the
b—
particle and..:
a neutron
a neutrino
a
b+
particle
there
is no sharing involved
5.
Which of the
following statements is
regarding
b+
emitters is/are TRUE...:
b+
emitting nuclides have previously undergone pair production
When
a b+
at its rest
mass interacts with matter, it loses its energy by photoelectric and Compton
effects
The
process that competes with
b+
emission is called isomeric transition
None
of the above
6.
In a
decay which of the following takes place...:
