Q17 · 2025 · Paper 1Simple familiar1 mark
QUESTION 17
Mesons and baryons
(A)
are elementary particles.
(B)
contain quarks and antiquarks.
(C)
consist of three elementary particles.
(D)
are composite particles containing at least one quark.
WORKED SOLUTION
1 markAnswer D
ANSWER
D
Worked solution
Mesons and baryons are hadrons, so they are composite particles rather than elementary particles and each contains at least one quark. Option D.
Selects option D.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.