btech

In first year, all the branches have to study same subjects.
All the listed subjects will be divided into two semesters depending on your college.
Engineering Physics
Engineering Chemistry
Engineering Mathematics-1
Engineering Mathematics-2
Engineering Drawing
Workshop Practice
Soft Skills
Programming in C
Programming in C+ ( or C language will be continued depending on your college.)
Basics of Electrical Engineering
Basics of Electronics Engineering
Basics of Mechanical Engineering
Professional Communication
2nd Year:
From 2nd year core subjects will be taught.
Now, it totally depends on your college which are being taught in year and semester so it may vary from college to college.
Theory of Computation
Data Structures (This is one of the main subjects of CSE )
Computer Networks
Computer based numerical and Statistical Techniques
Discrete Mathematics
Linux OS
Microprocessors ( I hated this Subject :P)
Database Management
Programming with Java
Web Technology
Digital System Design
Computer Organization
We were taught Python in Value Added Training.
3rd Year:
Probability and Random Variables
Operating Systems
Algorithms:Design and Analysis
Principles of Management
Aptitude Building-1
Computer Graphics
Dot Net Technologies
Essentials of Software Engineering
Compiler Design
Engineering Economics
Security Access Management
Aptitude Building-2
Besides this, you will have project work and one Elective subject.
4th Year:
Distributed Computing
Advanced Computer Architecture
Cryptography and Network Security
Data Warehousing and Mining
Security Identity Management
Advanced RDBMS
Business Intelligence
Real Time Systems
Cyber Law and IPR
Application Security
Besides you have to choose two elective subjects one in each semester.

Hello Ashutosh Kumar,
The procedure is different in different states of India. Some states conduct an entrance exam for lateral admission while some states give admission based on the marks of diploma courses. West bengal government conducts an entrance exam for admission on lateral basis. I am attaching a link that will tell you all about this examination and different aspects of it for admissions. In Maharashtra you will have to fill in the form online available on the website of directorate of technical education of Maharashtra.
https://www.shiksha.com/b-tech/colleges/b-tech-colleges-accepting-wbjee-jelet-west-bengal
Best wishes to you.