Dear Aspirant

Yes, there is an reservation of 3% seats for General Personal with disabilities, and also you have pretty good chances of getting a seat in almost every field except for defense in some cases.

If you want to clear the cutoff for JEE Mains you would have to do 5/6 correct questions and around 8/9 questions if you need a top tier college, whereas general students need to do at least 30 correct questions to clear JEE Mains. So, now you can see the advantage and difference in cutoff. All you will need is an valid PWD certificate. Disability certificate should be issued by Medical Board of at least three doctors duly constituted by the State or Central government.

Hope this helps