Ganesh, there is no upper age limit for NEET and so based on your age, you can appear for NEET. Now to appear for NEET, you should have studied Physics, Chemistry and Biology as your subjects in your 12th and secure a minimum aggregate of 50% in Physics, Chemistry and Biology. With BE as your degree, it is not quite clear if you have studied Biology in your 12th. If you did study Biology in your 12th, then your code will be 07. But if you haven't studied Biology in your 12th, you are not eligible for NEET. You have to take up Biology as an additional subject and then appear for NEET in 2021.

NEET  2020 ELIGIBILITY:

• Indian Nationals, NRIs, PIOs, OCIs, and Foreign Nationals
• No upper age limit as of now. The Candidate should be at least 17 years by December 31st of 2020
• You should have completed your 10+2 with Physics, Chemistry and Biology as your Core Subjects.
• 50% Aggregate in Physics, Chemistry and Biology for General Category, 45% for PWD and 40% for OBC,SC,ST Candidates.
• NIOS and Private Candidates are also eligible