Anna University

Yes, after completing your graduation you can join M.Tech biotechnology. As after graduation you will be able to study M. Tech. So, you can try to get admission in a good college.

Sorry to say, but B.tech in food technology requires physics, chemistry and maths subject from 10+2.
Infact, B.Sc in food tech also asks 50% or 55% aggregate in 10+2 with subjects physics, chemistry, maths and biology/home science.
There maybe some colleges offering diploma/graduate degree under B.Sc in food tech without maths.

Anna University, Chennai will conduct Tamil Nadu Common Entrance Test TANCET 2018 for admission to MBA 2018-20 and other PG courses. TANCET 2018 exam date is May 19, 2018 for admission to MBA and MCA courses. For other courses TANCET 2018 exam will be held on May 20.

June July and August are the months you can get admission under Anna University for MBA.

B.Tech. Computer Science: Features:
This course is a defined platform to learn basics and advanced programming about computers. It also opens ways to learn various computer languages like Java, Linux etc. Studying this course will enable you to become a well-established programmer.
B.Tech. Computer Science Syllabus gives you a vast knowledge about calculus, algorithms, computer architecture, database learning etc. A person who has an interest in grasping computer technology from grass root to zenith can opt for this course. Regards.