Hi Karun,

There is a huge list of topics in CSE or IT Branch but I will try and mention the important subjects.

Programming Languages.i.e C,C++,Java,Digital Electronics,Data Structures,Algorithm Design and Analysis,Graph Theory and combinatorics,Computer Organisation and Architecture,Operating Systems,Compiler Design,DataBase Management,Theory of Computation,Software Engineering,Computer Networks,Image Processing,,Data Mining,Wireless and Mobile Communication.

In Mechanical Branch,

The subjects that come under mechanical engineering are as follows:

In mechanical engineering there are four major areas like:

i) Manufacturing engineering,

ii) Design engineering,

iii) Thermal engineering,

iv) Industrial engineering / Management

some of important/core subjects are ED,Solid Mechanics,Material Science,Thermodynamics,Heat and Mass Transfer, Fluid Dynamics.

I hope it helps.