Whether separate advance ruling application under GST needs to be filed for each question?

Though the law is not very clear on this aspect, it can be conclusively determined from the format of the form of application Form GST ARA-01 that multiple questions can be raised in a single application.
As a general practice, the applicant files a single application pertaining to a particular line of business, and all questions relating to the same are stated in such application. In case such an applicant wishes to seek an advance ruling in respect of a different business vertical, a separate application is filed.