Hello student to get admission in colleges of engineering Trivandrum you need to appear in KEAM Btech.

Eligibility - Candidates must passed or appearing class 12 with physics chemistry and mathematics with minimum 45 percent marks aggregate from a recognized board.

Yes you can appear in the examination even if you've failed in the examination but you have to make sure that at the time of counselling you've your final pass marks sheet.

You can appear in compartment examination to get yourself pass in physics subject.

For more updates refer to the link mentioned below - https://www.google.com/amp/s/engineering.careers360.com/articles/keam-eligibility-criteria/amp

Feel free to comment if you have any doubt

Good luck