Dear Anima,
You haven't mentioned all the relevant details, your category or choice of college. So the answers will get a bit large if everything is mentioned one by one. However, for ease, the cut off marks for KEAM for consecutive years of 2019,2018, 2017 and 2016 is given in the link below. There are too many rounds for each allotment so unless you visit the link you won't be able to understand.
https://engineering.careers360.com/articles/keam-cutoff
The rank list for Keam is also released. Check it here
https://engineering.careers360.com/articles/keam-rank-list
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