Hello aspirant,

Hope you are doing absolutely great.

So with regard to your query, firstly, the marks scored in PCM will not be considered for the ranking of KCET exam, they are just the qualification marks in order to eligible for the KCET exam. Secondly, as you had mentioned 80 marks out of 180, so your rank will be between 4501 to 5000. Also there are not that much chances for a free seat. However you might definitely get a seat for the UG courses in any of the college in Karnataka.

Checkout the following link for any information regarding KCET marks and ranks: https://engineering.careers360.com/articles/kcet-marks-vs-rank

Hope this helps you!