CBSE 12th

BCA or Bachelor of Computer Application is one of the most famous and lucrative courses among the students interested in computer application. If you have decided to pursue BCA after 12th, then I must say it is an excellent option as in the growing technical age, the demand of the tech-savvy individuals is increasing with leaps and bound. BCA graduate has employment opportunities in both the public and private sector; thus, BCA degree provides you with the plethora of options and hence proves to be a proficient degree to build a successful career after 12th. BCA is a professional degree that after its completion, helps the students to grab job opportunities on positions like System engineer, software tester, junior programmer, web developer, system administrator, software developer etc. But, make sure to pursue engineering from one of the best BCA colleges like Dev Bhoomi Group of Institutions to get the best career prospects.

For B.E / B. Tech course , the cut-off mark required for a seat in P.S.G. College of Technology is pretty much on the higher side. Exact marks required for each department varies each year but Maalini Kumaran 's answer roughly gives you the range. As pointed out, the Category you belong to, is a deciding factor.
However , for M.Sc 5 year integrated courses , the admissions are not merely based on the cut-off marks scored in your 12th exams. The department usually conducts an interview to select the candidates. Though your 12th marks are given some weight-age (usually,less), importance is given to your understanding of concepts.
Personally I feel that the MSc courses are well- structured and the placements are also in par with the B.E/B.Tech students.