There's a good chance you can get a seat in a Karnataka government MBBS college with a score of 520 and belonging to the 2A (OBC) category and Hyderabad Karnataka region.

If there are more applicants this year compared to previous years, the cut-off might increase slightly.

A tougher exam might lead to a lower cut-off for the same percentile.The number of MBBS seats available in government colleges can vary slightly each year.

Look for the cut-offs for government MBBS colleges in Karnataka, particularly for the 2A (OBC) category and the Hyderabad Karnataka region for NEET 2023. This will give you an idea of the range you can expect. You can find this information on websites like Careers360.

Overall, with a score of 520 and belonging to the 2A category and Hyderabad Karnataka region, your chances of getting a government MBBS college seat in Karnataka are good. Make sure to participate in the NEET UG counseling process for both All India Quota and State Quota seats to maximize your options.

https://medicine.careers360.com/articles/neet-ug-2024-revised-syllabus-analysis-by-aakash-byjus

I hope it helps!