I got 73.5% in my JEE MAIN examination.Im a OBC student.can I get admission in NIT or any other government colleges?I am in Kerala Please help me.i am a girl.

Hey,
The cutoff changes every year depending upon the difficulty level of the question paper,the number of candidates appearing in the examination and the category of the candidates etcetra.
You can calculate your expected rack through this formula:
100-your total percentile score(that is, the person ahead of you).874469 are the number of candidates who appeared in January examination. Your expected rank is around 2,30,288.
You can use the link below to analyse your chances through Careers360 JEE Mains College Predictor:

Hope this helps.
Good luck.