Dear Asprirant

If you are asking that belonging to Karnataka with 3b category, you can apply or not. Then yes, you can apply but in AFMC they only consider reserved category i.e. SC/ST for which only 10 out of 145 seats are reserved. So, you have to go for general category. And as per your marks, unfortunately, there's no possibility for you to get a seat in AFMC with marks 491 as 2018's cut off was 551 marks for both boys and girls.

Note: The cut off changes every year which may lead to increment or decrement and only on the newly prepared merit list, the admission is done.

Hope this helps you.

All the best.