Hey Akash, for getting admission in MCA in any of the NITs you will have to clear the national level exam called NIMCET.
You will be delighted to know that the eligibility criteria for the exam for general category are :
1. 60% marks or 6.5 CGPA on a scale of 10
2. B.Sc/BCA or BIT of full three years from any recognised university or college.
3. you must have completed one of the courses mentioned in point 2 before September 2019 for being eligible to give this years exam.
So, yes you are eligible and in order to get admission in your preferred college, you need to work really hard.
Hope, you will be able to get what you want.
All the best.
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