BPM Validation at question or bloc of question's level

[thiriet]

Hi,

I was wondering if there is an option to set validation at question level, or at the bloc of question level ?

For instance, I have a form, containing 3 blocs of questions, each of the bloc containing questions.
I'd like to be able to validate or reject each question's answer individually, is it something doable out of the box?

Thanks