Hi there,

That's simply not possible, you can't have duplicate variable names.

And apart from this technical point, do you really want such? I mean if that set of questions consists of 3 / 4 / 5 variables, maybe a container start / split / end, that's easily 8 variables per set. Multiply that by 10... maybe a few other variables on your catalog item. So quickly a Catalog Item with 80+ variables...
That's a bit much of bad practice. Also looking at performance, that won't help your users at all + you need a lot of client side actions to hide the unnecessary variables, the performance will be massively slow 🙂 Another one, what if a user only is after 1 set of questions... then 90% of these variables are still technically created, though all empty, tables will rapidly grow and slow due to bad practices like this. 

Anyway, also read the suggestion from Nia. Sounds like MRVS is the goto for what you are describing.

Kind regards,
Mark