can I expect an increase of marks in may final key of comedk? or I'll end up with the same score which is given in the provisional answer key of comedk

The authorites releases the provisional answer key to allow the candidates to raise objections according to their perspective of an answer. The objections are accepted for only a stipulated period of time after which they release the final answer key. The difference between the two is only if a lot of students objectify on the same question.

Hence there is quite a possibility that your score remains the same.
All the best!