Hello Dear student
Yes if you are diploma passed than you can apply the jee main examination 2021.

JEE Main 2021 Important Dates


ImportantDates 2021
Last date of fee payment & uploading of images December 2020 2 ^nd week of March2021
ApplicationCorrection starts January2021 March2021
Release of Admit card January2021 3 ^rd week of March2021
JEE MainExam 2 ^nd week of January2021 2 ^nd week of April2021

Please visit the link for more information.

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

General Eligibility:

Nationality:Indian nationals as well as international applicants are eligible to apply.

International Applicants:Applicants from foreign countries are required to obtain the necessary marks /percentage from board recognized by AIU to be eligible for JEE Main.

Age Criterion:There is no age limit prescribed to apply for JEE Main 2021.

Attempt Limit:There will be no attempt limit.

Qualification:

Qualifying Exam: Applying candidate must have passed 12th level or its equivalent in 2019 or 2020 from a recognized board or university.

Appearing: Students who are appearing for their 12 ^th level in the 2021 session are also eligible to apply. Students who have passed their 12 ^th level in 2018 or before and those appearing in 2021 exam or later are not eligible for JEE Main 2021.




Hope that's helpful

Best of luck

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