hi mukul,

It's hard to tell about the minimum percentile and rank to qualify the jee mains exam but i can tell you about the minimun marks 

for the minimum marks you have to clear the cut off of the jee mains exam,

givnig the link from where you can check the precious cut off of jee mains so that you will get the idea that how much you required to qualify the exam.

here the link

https://engineering.careers360.com/articles/jee-main-cutoff

copy this link and paste another tab then you can see the cut off.

hope you get it .

thakns