It means you are General Person with disabilities candidate and for you people 3% seats are reserved. And in practically it gives you great chance to get a seat in any government field (May be not in defence).

Cut off marks of last year JEE mains

Unreserved general category had eligibility cutoff as 74 marks in JEE mains where as GENERAL PWD had 19 marks as cutoff... So you need to score 80 and above.. To be on a stage to crack NIT.

See for Gen PwD it is just 19 marks means if you correct just 5,6 questions then you will clear JEE mains and for just Gen they need to correct at least around 30 questions to clear JEE mains. Hope you getting this difference. But i suggest you do not take it as advantage and study less.. Please study well and try to get such marks that you do not need any type of reservation to get any seat.

Best wishes. Thank you.