Hey Tanu,
Getting into NISER is difficult, as it is one of the most prestigious institutes that gives admission to top rankers for the integrated MSc course.
Moreover, the huge number of candidates appearing for NEST makes it even harder.
According to last year's cut-off, the closing rank for NISER Bhubaneswar, for General Category was 800. Cut offs may vary little bit this year based on the changes in the number of candidates who appeared this year, availability of seats and even due to difficulty level of the paper. But your chances for getting admission are little less.
Hope this helps.
All the best!
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