Can I create rules based on the selected language on form?

Yes, you can. If you use multiple language forms, you can add rules that affect the form depending on the language your submitters have selected. For example, you can show or hide specific fields if the submitter has selected a certain language from the form’s language dropdown. You can also redirect submitters to different webpages based on what language they have selected or trigger different autoresponders. Check Field Rules, Confirmation Rules and Form Rules to find your form languages included in the Add Rule lightbox, within the condition dropdown.