I went through WBUT PGET guidelines and they mentioned that
"Admission test will be through written test followed by an interview to test the aptitude and analytical abilities, computational skills, fundamental in relevant basic subjects. The syllabus for a written test will be as per GATE syllabus for CSE & IT for 1,2 and 4; and CSE & Electronics for 3. "
1,2,3 and 4 mentioned above are given below in same order
Computer Science & Engineering(M.E.), Software Engineering (M.Tech.), Microelectronics & VLSI Technology(M.Tech.), Computer Science & Engineering with specialization in Information Security(M.Tech) .
Gate syllabus for CSE and IT,
I hope that will help!