[UPSC IFoS 2016] Particle Physics (Q264, 10M)

What are the quantum numbers of $u$ , $d$ and $s$ quarks and of the corresponding antiquarks ( $\bar{u}, \bar{d}, \bar{s}$ )? Obtain the quark contents of proton ( $p$ ), neutron ( $n$ ), positively charged pion ( $\pi^+$ ) and negatively charged omega minus ( $\Omega^-$ ) particle.