Hi Shankar,

Yes, you are eligible .JEE Mains is All India wide exam and anyone from any state can apply for this. 

eligibility criteria :

1. students who have passed 10+2 or equivalent in 2017or 2018

2. students appearing class 12 or equivalent exams in 2019  

There is no age limit.

For more details about  JEE Mains you can follow the below links,

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

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

Good Luck!!