Hello Jaganathan.
As per the previous years' cut-off trends, for 340+ marks you will be able to get a seat in some private college but not govt. college. You can also try to get top private medical colleges in Kerala. For more details check this: https://medicine.careers360.com/neet-college-predictor
All the best.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile