Basic Physics of Nuclear Medicine/Radioactive Decay MCQ

< Basic Physics of Nuclear Medicine
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1. Gamma-ray photons have:

no mass and no electric charge
→ Correct Answer - see Gamma Decay.
no mass and an electric charge of +1
no mass and an electric charge of +2
no mass and an electric charge of -1

2. Electron Capture involves:

an electron combining with a neutron
a neutron being ejected from the nucleus
an electron combining with a proton
→ Correct Answer - see Beta Decay.
an electron being ejected from the nucleus

3. In Alpha Decay:

Z and A are unchanged
Z decreases by 4 and A decreases by 2
Z decreases by 2 and A decreases by 4
→ Correct Answer - see Alpha Decay.
Z decreases by 4 and A decreases by 4

4. Isomeric Transition involves:

the emission of a gamma-ray
→ Correct Answer - see Gamma Decay.
the conversion of a neutron to a proton
the conversion of a proton to a neutron
K-capture

5. In spontaneous fission:

nuclear stability is always achieved
the nucleus splits into 2 or 3 fragments
→ Correct Answer - see Spontaneous Fission.
the fragments are never radioactive
the nucleus is unchanged

6. An alpha-particle consists of:

one proton and two neutrons
two protons and one neutron
two protons and two neutrons
→ Correct Answer - see Alpha Decay.
one proton and one neutron

7. Internal Conversion involves:

the emission of a gamma-ray
→ Correct Answer - see Gamma Decay.
the conversion of a neutron to a proton
K-capture
none of the above processes

8. Electron Emission involves the ejection of:

a beta-minus particle
→ Correct Answer - see Beta Decay.
an alpha-particle
a beta-plus particle
a proton and two neutrons

9. In Positron Emission:

Z increases by 1 and A remains the same
Z decreases by 1 and A remains the same
→ Correct Answer - see Beta Decay.
Z remains the same and A decreases by 1
Z remains the same and A increases by 1

10. Positron Emission involves the ejection of:

an alpha-particle
a beta-minus particle
a beta-plus particle
→ Correct Answer - see Beta Decay.
a proton and a neutron

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