Hello,

B.tech cse is a undergraduate courses of 4 year full time. In BTech cse students learn about computer hardwork, working, Software etc. They learn all about computer. BTech is a practical and theoretical course.

The main subject gor b. Tech cse are DBMS, operating system, programing languages, networking , computer architecture.

The eligibility criteria for b. Tech cse is differ for different college for private college they taken direct admission if you pass 10+2.

In other few college have their own Entrance exam for admission and admission taken on the basis of performance in Entrance exam.

In government college or top colleges like IIT, NITs, IIITs admission taken on the basis of jee main and jee advances performance.

https://www.careers360.com/courses/b-tech-in-computer-science

All the best!!