Hi Suraj,

I understand that earlier you failed to clear your class XII examinations in the year 2018 under CBSE Board but have scored 59% and 70% respectively in the years 2019 and 2020 from the State Board and now to answer your question, you would be eligible to appear in JEE Advanced 2020 provided that you have cleared JEE Mains successfully and also that you have not appeared for JEE Mains consecutively two times in any time earlier and also have a percentage of at least 75% in your class XII.

Since you satisfy all the criteria required for the JEE Advanced 2020 examination, therefore you are entirely eligible for the same.

To see the list of colleges that you have a chance of admission into with your JEE Mains rank, kindly refer to the following link:

BEST WISHES!