Primary application for admission can be done before the admission application form submission deadline and scan documents can be uploaded before preparation of merit list, the date of which will be informed to you in advanced. However, you need to fulfill the eligibility criteria once your board/ university declares the result. Applications of only eligible candidates will be considered in merit list preparation. Before final admission counseling, documents are to be submitted without fail.
You need to bring the original documents at the time of counseling/ admission confirmation. If your admission is confirmed you need to submit original documents.