Hello,
For TANCET ME (Computer Science), focus mainly on engineering mathematics and core CS subjects like programming, data structures, algorithms, operating systems, databases, computer networks, TOC, compiler design, COA, software engineering, and digital logic. These areas carry the highest weightage.
For Previous year Question papers, kindly check the below link,
https://engineering.careers360.com/download/sample-papers/tancet-previous-year-paper-for-m-e-m-tech
To know more details about TANCET, kindly check the following link,
https://engineering.careers360.com/download/ebooks/tancet-a-complete-guide
Hope this helps you.