Hello Aspirant,

To be honest, this does not matter whether you upload your caste certificate of either state or center instead the caste certificate which you will upload should be of the similar format as available on the official website of JOSAA :-

https://josaa.nic.in/webinfo/File/GetFile?FileId=12&LangId=P

So if the certificate which you have uploaded in the application form of JEE-Main 2021 is similar to that of present in the above link then it is eligible and valid for JEE-Main as well as JEE-Advance 2021.

As per the previous year, this year also 75%  relaxation is provided but only for admission to IITs not for NITs/IIITs/CFTIs. Which means the candidate should have passed all the subjects of class 12th for which he/she is appearing and if he/she is unable to secure 75% then also he/she will be eligible for JEE-Advance 2021 and for admission to IITs.

For complete details about JEE-Advance 2021 eligibility criteria kindly check out the link given below :-

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

Some insights of JEE-Main 2021 :-

> To qualify for JEE Mains, there is no minimum aggregate percentage criteria but yes if you want to take admission into NITs, IIITs or CFTIs then you should score a minimum aggregate of 75% in your class 12th if you belongs to General/Unreserved category and 65% if you belongs to any of the reserved category.

> Also from this year according to New Education Policy the JEE-Main examination will be conducted in English, Hindi and other regional languages such as Bengali, Gujarati, Assamese, Kannada, Marathi, Punjabi, Tamil, Telugu, Urdu, Odia and Malayalam.

> In JEE-Main 2021 there will be total 90 question out of which you have to attempt only 75 (25 from each section) and there will be two sections for each subject, Section-A will be of Multiple-Choice Questions (MCQs)(20 compulsory questions) and Section-B will contain Questions whose answers are to be filled in as a numerical value (10 numerical based questions out of which only 5 are compulsory to be attempted).

> In Section B, candidates have to attempt any five questions out of 10. There will be no negative marking for Section B.

> All question will be of 4 marks and in MCQs there will be negative marking of (-1) on incorrect attempt.

This year JEE-Main is being conducted with slight changes in it's pattern and it's conduction and you can check out all the changes from the link given below :-

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

I hope this information helps you.

Good Luck!!