yes you can subit the income certificate after the seat allotnet i th euniversity otself or on the centre which is provide to you for the verification of teh doccument all the best.

Hello  

No one takes your certificates during the certificate verification during verification.you just need to submit a photocopy of all the listed documents and pay a registration fee and get your mobile number registered to which a login id is sent the day before the option filling starts.

They just verify your certificates and give them back to you.

After you are alloted a seat you need to pay the fee and accept the seat online and only then your certifiactes are taken by the college management during the time of reporting physically at the college