Lucknow

https://www.shiksha.com/college/babu-banarasi-das-national-institute-of-technology-and-management-Lucknow-28153/admission
In this link, you will find all the information related to admission procedure along with the eligibility, important dates, etc.

Yes, you can take direct admission in SRM University for CSE.
Eligibility For B.Tech: 12th with science with minimum 50% marks from a recognised board.

Visit the link below and Find information related to cut-offs, placements, courses, fees, admissions, rankings, eligibility and reviews for Engineering Colleges for B.Tech in Computer Science Engineering in Lucknow. https://www.shiksha.com/b-tech/colleges/b-tech-in-computer-science-engineering-colleges-lucknow.

Hello Anadi,It is very nice to hear from you that you are interested in doing your graduation in engineering. But, you have scored just 56%. Why insist on engineering? You would get admission only in management quota with huge fees and no certainty of job. Only 50% fresh engineering graduate could get jobs last year. I would like to advise you that please select a stream of studies that fascinates you the most. I am sure you will succeed and bring laurels. Best wishes.

Jindal Global Law School
Manav Rachna University
Amity Law School
BMU

The law colleges take admission in the basis of entrance exam like CLAT marks. However, check the college guidelines if they take direct admission after class 12.

Hello Arun,
It is mandatory to have at least 65 percent in Board exams since you belong to ST category to get admission through JoSAA counseling. Hence, you can't get admission into NITs, IIITs and other colleges.

If you are writing any entrance test, then 28 days is enough. It depends on your interest and dedication.