Hi , 

So you must specify the individual marks of PCM subjects to get an accurate rank. Your rank would be somewhere in between 10000 and 13000. 

According to my estimation , chances of getting into a Government college are fair but it also depends on your category . You can get civil engineering in gec calicut and kannur. 

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.