Hello aspirant, 

Syllabus of B. Tech. First year is almost same for every branch. List of subjects in first semester are as follows 

English 

Mathematics 1

Physics 1

Chemistry 1

Branch specific course

Basic of programming language 

Basic of Civil Engineering (except CE) 

BASIC of electronic and electrical engineering 

Basic of mechanical engineering 

Engineering Graphics / Engineering practice

This list is taken as per  NIT Trichy.

Hope it helped to clear your delimma.