As per I can see on the official website of Karnataka Examination Authority (KEA), there has been no mention about the KCET rank for puc supplementary  students and no notification regarding when the date for the KCET ranks will be given for the supplementary students. I would say that you

Hello student,

First of all congratulations for the rank you had secured. As per the previous years' trends in the cut-off, it can be said that you have secured decent marks. As most of the govt. colleges in Karnataka have a cut-off close to 10K, your mark might land you

Hello student,

After the written test, candidates are allotted through 3 rounds of counselling. This is done after evaluating the seat matrix of various participating colleges and reservation criteria. 3 rounds of counselling namely – Verification, Option entry, Allotment of Seats takes place. According to the news it has found

Hello candidate,

All the students who come after KCET represent a single batch irrespective of their rounds of counselling. All the students either from first, second or third round come along a common batch so their classes will remain the same also.

Hope it helps. 

Good luck! 

Don't worry about attendance. Most of the colleges do need 75% attendance. So even if your classes are missed because you have got admission in 3rd round it won't be a problem. Moreover the teachers already know so don't worry about attendance 

Your query is not very clear. Please clarify which college or counselling process you want to ask about. Alternatively, you can also look for the official website on your own and check dates for all the processes. Every round result will be there mentioned clearly.

s i to hv a sme confusion wn s 3rd round option entry n i hv nt alloted any seat in 2nd round so plz answer me

Just first wait for the results of the second round as may be you be getting a good college from there as well so just wait for it. Once this has been done and you are not satisfied with your allotment you can directly change your choice and setup again

Hello,
We can't provide you with correct answer. It is totally subject to the students applying for counselling. But we can expect a slight peak in the cutoff, because josaa admissions will be over.
Good Luck!