I got 75percent in jee mains January 2020 under BC category will i apply for jee advance?

HELLO ASHWINI
since it is very difficult to predict the exact rank but we do have a backup> we have a formula to calculate the expected rank that is (100 – Total percentile) x 869010/100.So according to formula your expected rank for present percentile for January session comes out to be 217252 . Now the expected rank might change depending on the no of candidates appearing the april session. For ex if 12 lakh candidate appear the april session then just replace 869010 by 12 lakhs. But if you score above 85 percentile then you have a very decent chance of qualifying jee mains.
Well since the cutoffs are yet to be decided let us analyse using previous year cutoff
2019
Other Backward Classes (OBC-NCL)  74.3166557
It seems you are very close to the OBC cutoff you have a minor chances of qualifying JEE mains.

But if you are curious to know that which college you might land into with your percentile then you can use the college predictor link which has following features;

JEE Main 2020 College Predictor

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