Hi , 

So you need to use the help of a rank predictor to know the range of your marks . You need to specify your 12th stream and also individual marks in PCM subjects . But according to my estimation chances of getting into a Government college are bleak but it also depends on your category so do not lose hope. Also apply at all private colleges because you have a high chance of admission.  

To know the closing ranks all colleges please do check this site.  

https://engineering.careers360.com/articles/keam-cutoff

For further queries please approach careers360.