Yes You Will definately Get admission to NIT though you have get good marks in jee mains that means you are eligible to get seat in the top NIT . The Minimum Score to get a seat In NIT  is 98 percentile If you wish to do CSE in Btech other than That if you need just a brand name of NIT  then you can go for the BIO-TECHNOLOGY Branch . You need just 89 or 90 percentile and If you have state Quota then the percentile will be also very less for the same .