Dear Kaavya, 

Yes there is female reservations for each branch to empower women. 

If you only  want to get into NIT Suratkhal, then you need to get a minimum of 9000 OBC Category Rank. 

But to get a most sought branch like Computer Science Engineering, then you need a minimum of 500 OBC Category Rank.

Here is the information about selected Ranks and their Branches of OBC Category 

hello kaavya

going bu the previous year data and considering your category the last rank at which you can get nit surathkal will be around 16500. you will get mining engineering at this branch. feel free to ask any doubts in the comments section.

hope it helps.