Hi

Without studying chemistry in 12th you can get into computer science engineering course. It is a four year undergraduate program including both Theoretical and practical. Eligibility criteria for computer science engineering is candidates should have passed the 12th with subjects physics mathematics and English. Chemistry is not required to studying computer science.  knowledge in math subjects like Discrete Mathematics, Graph Theory, Probability and Statistics is required and will be useful.

Here is a list of colleges that offers computer Science Engineering in India

https://engineering.careers360.com/colleges/list-of-computer-science-engineering-colleges-in-india