I want to join B.SC.-Biotechnology in reputed colleges like-Loyola. I completed my +2 with CSC(I grp) as Major. WIll i be eligible to apply?

I want to join B.SC.-Biotechnology in reputed colleges like-Loyola, MCC or Ethiraj. I completed my +2 with C.SC.(I grp) as Major (C.sc,Phy,Chem,Maths). WIll i be eligible to apply for Biotechnology course? if swo what is the expected marks/percentage in +2 to join?