is it necessary to get 75% in hs examination for admission in shivpur university Kolkata in IT or CS or ECE ???
Admission in Shibpur University, Kolkata is considered on the basis of JEE Mains. And minimum 12th percentage required to get in is 75% for General candidates and 65% for SC/ST candidates. IF the candidate would not satisfy this condition then he will not be considered for admission into any course, so yes it is necessary to score minimum qualifying percentage in 10+2.
For particular branch it will depend on your marks in JEE Mains, better the marks better would be the choice for B.Tech branches.