Hello applicant,

*It is difficult to predict the exact marks because the total marks is not same for JEE Advanced, it changes every year so there is no unique answer to this. You need to minimum 25-30% of total marks to have decent chances of getting seat. In 2019 the cut off to qualify JEE Advanced for Open-PWD was 17.5% of aggregate and minimum 5% marks in individual subject this is going to change in 2020 depending on number of candidates appeared, difficulty of exam and number of seats available.

*And For rough idea, you can check previous year cutoff:-

h ttps://engineering.careers360.com/articles/jee-advanced-cutoff?amp

Hope it helpful.