Hello Akash,

Top Government Colleges in Kerala accepting NATA scores  are TKM College of Engineering, Kollam and MES College of Engineering, Malappuram.
According to the eligibility criteria of MES College of Engineering, candidate must be a pass in Higher Secondary Examination or Examination recognized equivalent thereto by the University of Calicut with 50% marks in aggregate and with Physics, Chemistry and Mathematics as one of the subjects of examination at the higher secondary level. Admission shall be subject to obtaining a minimum of 40% marks in the Aptitude Test[NATA] conducted by Council of Architecture.
Good Luck!