The incorrect IUPAC name is

The incorrect IUPAC name of a compounds is 3,3-diethyl butane. The correct name is :

The incorrect IUPAC name of a compound is 3,3-diethyl butane. Write its structural formula and correct the name of the compound.

Which one of the following incorrect IUPAC name is

Which of the following is/are incorrect IUPAC name/ (s):

Which of the following is/are incorrect IUPAC name/ (s):

Identify the incorrect IUPAC name.

Which of the following is/are incorrect IUPAC name ?

Which of the following is /are incorrect IUPAC name :

Which of the following is/are incorrect IUPAC name ?