Hello aspirant,

As per the eligibility criteria of JEE Mains candidates must have passed 10+2 or equivalent exam in science stream from a recognised Board.

As you have done Diploma, so you are not eligible for for JEE Mains exam. Diploma students can appear for JEE Advanced exam but cannot get admission into NITs and CFTIs as they cannot appear for JEE Mains entrance exam.

For 12 th standard students after qualifying in JEE Mains, candidates can appear for JEE Advanced entrance exam. JEE Mains can be attempted in three consecutive years from the year 12 th standard is completed and JEE Advanced can be given twice.

Check JEE Advanced eligibility criteria using below given link.

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

To get more information about JEE Mains eligibility criteria go through below mentioned.

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

May this information helps you.

Best of Luck!!