My cmr rank is 6521 in sc Catogary and Catogary rank 949 can I get admissions in nift?

Yes you can get admission in Nift campus as your rank is pretty good I would like to congrats you for scoring such a decent rank.

Also it's very easy to predict college on career 360 by clicking on the link mentioned below its very user friendly and very helpful

https://design.careers360.com/nift-college-predictor

Feel free to comment if you have any doubt
Good luck