u/K1D2442

Cat 4 cse in vellore or cat 2 cse in chennai?

Pls help

I am writing mocks and constantly getting 70-75 marks in eamcet. I really want below 5k rank. Iam writing these without any revision (my chem is very weak) . What can I do to improve it to 80+ in . My exam is on 10th. I don't want my father to pay donation