[votivesoul]

A JW I work with told me that they have a questionnaire with over 100 questions that a person must study and affirm the answers to before they are allowed to be immersed.

Personally, the only thing that I think needs to be addressed prior to immersion is:

Repentance from dead works
Faith toward God (which includes a basic confession: that Jesus is the Christ, the Son of the Living God)

If a person has not repented of sin and if they don't confess an accurate faith in the Lord, what's the point? Remission of sins won't likely occur.