NIT

After reading that you got only 52.6 score in JEE Mains I was shocked and you are expecting a seat in NIT but after knowing you belong to SC category then I can answer. With a 52.6 score in JEE Mains and SC category, chances of NIT admission are low but possible in lower-ranked NITs or less preferred branches under home state quota. Cutoffs vary yearly, so apply through JoSAA counselling, keep options wide, and also consider IIITs, GFTIs, or state colleges.

No , you cannot get Computer Science in an NIT without having Maths in class 11th and 12th. While you scored 98 percentile in JEE Mains, which is generally considered a good score, and might get you into some NITs, having Maths in class 11th and 12th is a mandatory eligibility requirement for NIT admissions, especially for Computer Science. 

In Kerala, the National Institute of Technology (NIT) Calicut is the most prominent institution equivalent to other NITs in India. Additionally, Indian Institute of Space Science and Technology (IIST) in Thiruvananthapuram and Indian Institute of Technology (IIT) Palakkad are also considered top-tier engineering institutions in Kerala, comparable to NITs in terms of academic rigor and opportunities. 

The following factors determine the BTech cut-off (admission/qualifying):

• Number of aspirants who appeared for entrance exam
• The difficulty level of the exam
• Total number of seats available
• Total number of applications received for a particular programme
• The category under which admission is sought

With an AIR of 67,353 in JEE Main, you have good chances of getting NITs like NIT Jalandhar, NIT Goa, NIT Hamirpur, and NIT Srinagar, especially in branches like Civil, Mechanical, EEE, or ECE. You may also get core branches in newer NITs like Nagaland, Mizoram, Arunachal Pradesh, and Puducherry. These NITs had closing ranks above 80,000–1,10,000 in recent years. Make sure to fill your choices carefully in JoSAA counselling and include all possible options. If you're flexible with the branch, you'll have a better chance of getting into a decent NIT. Always keep backup colleges just in case.