Forensic Science

There are over 18 M.Sc in Forensic Science colleges in India offering 20 Courses. Please refer to the link provided below for a detailed list of these colleges. You should be able to navigate to the best colleges on the list using the filters on the webpage.
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https://www.shiksha.com/science/colleges/m-sc-forensic-science-colleges-india

These are best colleges in Kerala to study forensic Science:-
Rajiv Gandhi Centre for Biotechnology
Thiruvananthapuram, Kerala
Amrita School of Medicine, Coimbatore
Kochi, Kerala
Government Medical College
Thiruvananthapuram, Kerala
Government Medical College, Kozhikode
Calicut, Kerala
T. D. Medical College

Yes, you can definitely join post graduation in forensic science if you have completed post graduation in biotechnology with good percentage. Best of luck for your future and if any query feel free to ask.

Please check for your eligibility to apply for an UG course in forensic science from the criteria mentioned below:
Eligibility for UG Forensic Sciences:
The basic criterion of eligibility needed to be met for admission to the course is a Higher Secondary (10+2) or equivalent qualification from a recognized educational Board, with Physics, Chemistry and Biology and/ or Math as main subjects and a minimum aggregate score of 55%.
However, a few private universities in India conduct their own entrance tests for evaluating and admitting students to the course.
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The best government colleges in India offering B.Sc in forensic science are:
Institute of Forensic Science, Nagpur-Maharashtra
Lok Nayak Jayaprakash Narayan National Institute of Criminology & Forensic Science, Delhi

No, you have to register for the course you want to take admission in.

There are over 32 Forensic Science colleges in India Offering 44 Courses. Check the list of all Forensic Science colleges/institutes in India listed on Shiksha. Get all information related to admissions, fees, courses, placements, reviews & more on Forensic Science colleges in India to help you decide which college you should be targeting for Forensic Science admissions in India. Regards.
https://www.shiksha.com/science/colleges/forensic-science-colleges-india