1.Mathematics 2-K.Das and B.K.Pal 2.chemistry 1-Rina Paladhi 3.computer(C programming)-a)Balaguruswamy b)Y.kanetkar 4.basic electrical and electronic engg-A.K.Chakraborti(TMH,WBUT) 5.engineering mechanics-nag,pati,jana THESE ARE FOR WBUT.these are enough for scoring well in WBUT exams.never follow matrix books as they will deprive you of your conceptual understanding of the subjects.Follow matrix books only for exams.