Hello student,
With a score of 540, you have chances of getting a seat in the government medical colleges when comparing the results of previous years. Last year,  a score of 539 secured a seat in the Nalanda medical college and hospital , Patna in EBC category under the state quota. But scores and ranks vary each year with toughness of the exam and availability of seats. However you can predict the colleges which you are likely to get using the given link
http://medicine.careers360.com/neet-college-predictor
Good luck

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