Hello aspirant,

The major difference between both these field is that CSE(Computer science engineers) are involved in many aspects of computing, from the design of individual microprocessors, personal computers and supercomputers to circuit designing and writing software that powers them. Whereas ,

IT (Information Technology) deals with the use of electronic computers and computer software to store, protect process, transmit and securely retrieve data. IT professionals perform a variety of tasks that range from installing applications to designing complex computer networks and information databases.

The major  difference between both these field is that IT deals with the application of computing technology to real life processes, while, Computer Science deals with the science that facilitates these applications. To make it short and simple, Computer Science is the creation of software and hardware by using different programming skills. On the other hand, IT is just the selection of the proper software or hardware for the task.

Difference in course and core areas: 

CSE: Computer Science engineering students study about design, implementation, and management of information system of both software and hardware processes. Students pursuing computer science study: Algorithms and Data Structure, Architecture, Artificial Intelligence and Robotics, Database and Information Retrieval, Human-Computer Communication, Numerical and Symbolic Computation, Operating Systems, Programming Languages and Software Methodology and Engineering.

IT: Information Technology deals with installation, development and implementation of computer systems and applications. Under this stream, students learn the following: Data Structures and Algorithms, Microprocessors and Interfacing, Computer Communication and Networking, Database Systems, Internet Technologies and Applications, Software Engineering etc.

Hope the answer is helpful. 

Good luck. 

CSE (Computer science engineers) are involved in many aspects of computing, from the design of individual microprocessors, personal computers and supercomputers to circuit designing and writing software that powers them whereas IT (Information Technology) deals with the use of electronic computers and computer software to store, protect process, transmit and securely retrieve data. IT professionals perform a variety of tasks that range from installing applications to designing complex computer networks and information databases. Hope this may help you.