IUPAC name of the compound CH≡C−CH=CH−CH=CH2 is

C6H≡C5−C4H=C3H−C2H=C1H2Two double bonds are present at C1 and C3 one triple bond is present at C5.These functional groups are indicated by suffixes ‘diene’ and ‘yne’ respectively.The longest chain containing the functional groups has 6 carbons, hence the parenthydro carbon is hexane.The functional group ene is prior than yne.The suffixes ene and yne replaces ane.