`"Hex-3-ynal" overset((1)NaBH_(4))to overset((2)PBr_(3))to overset((3)"Mg/Ether")to overset((4)CO_(2))to overset((5)H^(oplus))to(X)`, formed product X will be:

CH_(3)CH_(2)OH overset(P+I_(2))to Aunderset("ether")overset("Mg")to B overset(HCHO)to C overset(H_(2)O)to D The product 'D' is-

CH_(3)CH_(2)OH overset(P+I_(2))to Aunderset("ether")overset("Mg")to B overset(HCHO)to C overset(H_(2)O)to D The product 'D' is-

overset(Mg)rarr X overset(CO_(2))rarr Y overset(H_(2)O)rarr Z

2Ph-overset(O)overset(||)(C)-CH_(3)underset(H_(2)O)overset(Mg-Hg)to underset(Delta)overset(Conc.H_(2)SO_(4))to overset(KMnO_(4),H^(oplus))to The final product is

2Ph-overset(O)overset(||)(C)-CH_(3)underset(H_(2)O)overset(Mg-Hg)to underset(Delta)overset(Conc.H_(2)SO_(4))to overset(KMnO_(4),H^(oplus))to The final product is

Cl -overset(O) overset(||)C-OC_(2)H_(5)- overset((1)'X'RMgX) underset((2)NH_(4)Cl)to 3^(@)"alcohol"