hi,

if you want to study in central university of kerala or any other central university in india in bachelors or post graduate courses you need to appear in cecet exam (central university common entrance test), since you did not mention your highest qualification, Follow the below link to know about eligibility criteria for admission in various courses,

https://drive.google.com/file/d/1mj-5xsQzG4mKULw5NjaY8eUkE8jzdV8P/view