In india IIT JEE is become religion for all students who passed their 12th with Maths without knowing the difficulty level of IIT JEE they start prepartion because all of their friends are doing this .Fact is these compitions are very tough for an average student approximetly 14 lakhs students appear in JEE Mains every year and as its paper is also very tough so most of the students disqualify this examination, If we count seats of CSE and IT in IITs and NITS its not more than 17 to 20 thousand rest 1380000 did not get admission in their dream college and desired branch for doing B.Tech from NITs and IITs you should have atleast 75% marks in class 12th.
So next option to go NITS in as MCA course through NIMCET average packages and placements of MCA students are simillar as of B.Tech. and as compare to JEE mains NIMCET is very much easier exam due to lack of awareness only 12 to 15 thousands students are giving this exam every year and there are 890 seats in NITS.
So if you want to make carrer in CS and IT field then MCA would be a better chance after your graduation in B.Sc. or BCA.
So students Choose smartly your career.