Hi, you can visit the links to clarify your doubts.

• http://www.du.ac.in/du/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=601&cntnt01returnid=83
• http://pib.nic.in/newsite/PrintRelease.aspx?relid=124804

Answer to questions like these isn't available on the net and it's best that you contact admission help desk as they will be able to provide an answer to your query. You can send general and technical queries related to online registration and admission process at du.ug.help2018@gmail.com and can call on the helpline numbers. 27006900.

Good Luck