How can you distinguish between delta plus and proton as they both made up of to up quark and one down quark?

 Q.No.7: - How can you distinguish between delta plus  and proton as they both made up of two up quark and one down quark?

Ans: - For Delta plus all the three quarks are of same spin but for proton spin of one of three quarks is down and the remaining two have up spin. e.g.