The following names are incorrect. What makes it incorrect and give the correct IUPAC names
1-ethyl-5,5-dimethyl-1-hexyne
1-ethyl-5,5-dimethyl-1-hexyne
I can't tell what compound you intend. 1-hexyne can't also be 1 ethyl. Did you mean
C2H5-C(triple bond)C-C-C-C(C2H5)2-CH3? If so I would name this as an octyne.