hello,

In order to get under 500 rank in sc category you must have marks in the range of 100-125 I am saying because one of my has got 117 marks and has achieved 532 sc category rank. But to get this rank or marks you to do hard work. The things which you have mentioned if you apply in reality surely it works just one thing one must know that jee exams test your problem solving skill so you have to practice a lot of questions (previous years).

hope this will help you

all the best!!