Hey there!
It is not possible to predict the exact rank ,as it depends on multiple factors like, total students appearing, their performance, etc, but we can get a somewhat idea. With your KEAM score and board pcm percentage you can expect a rank around 5900-6000.
To see options of colleges you can get into based on your score, you can use the keam college predictor tool, here's the link -
KEAM College Predictor 2019 - Know your college admission chances base ...
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