You can carry your Admit Card, Card Board and Ball Pen (Black or Blue) only.
If the answer marked by you is incorrect, then one mark will be deducted from the total score.
The previous year KEAM (B.E / B.Tech) question papers are not sold by any organization or from the Office of the Commissioner for Entrance Examinations. However, candidates who have given the entrance test prior also can provide you with the same. Another option is the State Institute of Educational Technology that prepares and sold Engineering/Medical CDs based on the question papers of previous years.
No, you will not be given any breaks during the test.