Hello Aspirant,

IIT JEE is the National level Exam for the admission to B.tech programmes. As per the eligibility, You Should have passed qualifying examination with Physics, Mathematics, Any one of (Chemistry, Biology, Biotechnology, Technical Vocational Subject).

To check the further information you can go through with the given below link.

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

In order to get admission for Engineering programme with CS, You can apply for IIT JEE National level Exam & State level Engineering Exam.

It is not compulsory to have Computer Science in class 10+2.

Good Luck!