A baryon has the quark combination ddsddsdds. Which of the following is correct for this particle?
It has a baryon number of +13+\frac{1}{3}+31.
It has a charge of −1.6×10−19 C-1.6 \times 10^{-19}\text{ C}−1.6×10−19 C.
It has a strangeness of +1+1+1.
It is classified as a meson.
50 exam-style questions on AQA A Level Physics Particles, covering Constituents of the atom, Stable and unstable nuclei, Particles, antiparticles and photons, Particle interactions, Classification of particles, Quarks and antiquarks, and Applications of conservation laws. Each one has a worked solution and a mark scheme showing where the marks go.