Q29) CERN announced discovery of the exotic subatomic particles pentaquarks which so far had existed in theory only. Which of the following statements is/are true about the below mentioned particles?
1) Pentaquark is a sub-atomic particle composed of five-quarks (four antiquarks and a quark).
2) A baryon is a composite subatomic particle made up of three quarks
3) Mesons are composed of one quark and one antiquark
4) Leptons are not quark-based
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