Hi Aspirant,
Hope you are doing great.
JEE -Joint Entrance Examination.It is a national level examination conducted for admission to various Undergraduate programmes.It consist of 2 papers.Paper 1 ia conducted for admission to B.E/B.Tech.Paper 2 ic conducted for admission to B.Arch and B.planning courses.
It is a National level Examination, you have to score more marks to get admission in Top NITs and IITs.
Cutoff marks will differ from Institute to Institute based on various factors.Cutoff trends is based on difficulty of exam,Number of seats available,Number of candidates attended JEE Main exam and so on.You Have to score nearly 80 percentile to get desired college and CSE branch for a safer side.
To know information about  JEE Main Marks vs percentile vs Rank check the below link

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

To know the cutoff of SC category for CSE branch in various NIT institution check the below link

https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches
To know the chances of colleges based on your JEE Maim score use JEE Main College Predictor tool link below

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

I hope this information will be useful to you.
Best of luck.

JNEC Aurangabad

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