Hello Ashwathi Achu,
Yes, you can write Kerala PSC exams.
Kerala PSC EXAM Eligibility Criteria:-
Nationality
The Candidate must be an Indian citizen.
Age Limit
The Candidate must have the Age Limit from 21  35 years of age.
The Relaxation for SC and ST period is for five years. For OBC 3 years.
Educational Qualification:
Candidates should possess graduate degree with at least 55% of the marks in any field from any of the University incorporated by an Act of the Central or State
The candidate should have basic knowledge of Computer Application.
Best of Luck!!