Hi

Bc is  a part of obc ncl but you cannot upload it as BC certificate wouldn't be  as per the format prescribed for obc ncl by josaa at its official website the link for which is provided below

https://josaa.nic.in/webinfocms/Handler/FileHandler.ashx?i=File&ii=146&iii=Y

What you can do is simply download the above format fill it on your own and then get it signed by the officials from where you got your OBC certificate made .

And don't worry, even if you don't have your obc ncl certificate right now as it is verified during counselling for seat allotment, what you need to do is download the self declaration and fill it and submit it in place of OBC NCL certificate. The self declaration/ undertaking form for category you belong to is available on the page number 9 of pdf for which link is given below :-

https://jeemain.nta.nic.in/webinfo2021/File/GetFile?FileId=5&LangId=P

• Jee main 2021 april session will be conducted from 20th - 25th july 2021.Jee main application Window for April session was open from 6 to 8 July 2021 (upto 09:00 PM).

• Jee main 2021 May session will be conducted from 27th july - 2nd August 2021. The  application Window for May session  is open from 9 to 12 July 2021 (upto 09:00 PM)

For more details regarding dates checkout:-

https://engineering.careers360.com/exams/jee-main

The direct link for jee main 2021 , new Registration Form and registration Form correction is given below :-

https://testservices.nic.in/examSys21/root/Home.aspx?appFormId=101032111

Thankyou