There is no last date mentioned for submission of application forms for Integral University Entrance test  their official website. However, there is a notification that says that Computer Based examination will commence from May 4th. You can read that at: http://iul.ac.in/IUET_Syllabus.aspx . Now this might not be the same because the current lockdown will only end on May 3rd and the future depends on the spread and control of the virus. But there is no mention of any last date for submission of the application form for the entrance exam. If you haven't filled up the application form yet, you can at: http://iul.ac.in/AdmissionForm.aspx