B.Sc Forensic Science

The pattern vary from college to college. You can check the respective college website for the entrance exam syllabus.

Forensic Scientists analyze, identify and classify physical evidence relating to criminal or suspected cases of crime. They investigate to look for evidence which are tested in laboratories and records prepared for each case. Forensic Science is interdisciplinary and includes investigative Science related to Explosives, Narcotics, Ballistics, Lie Detection, DNA Fingerprinting, Cyber/ Computer, Document Examination etc. Get more information: https://www.shiksha.com/science/forensic-science-chp.

You can get the list of college by given link
https://www.shiksha.com/science/colleges/b-sc-forensic-science-colleges-Chennai.

According to me, you should choose B.Sc Maths group as here you will get more exposure. You will get to learn more and it has good opportunities too.

There is no common entrance exams for B.Sc Forensic Science admission. Universities offering B.Sc Forensic Science conduct university level exam for admission. You can apply through the official website of the respective university/college.

Forensic has subjects based more on biology and geology has subjects based on chemistry and physics.

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%.

No work is bad if its of your interest. But from my opinion, its not that good job profile with not many job opportunities. Please think about it and also consult the faculty of the same. Once to opt its difficult to change or waste one year. Please like and follow.
All the best.

Go to the university website check for the availabilities of University forms if they are out fill them.

Madurai Kamaraj University does not offer this specialisation under B.Sc. However, you can check other courses here- https://www.shiksha.com/university/madurai-kamaraj-university-mku-24865/courses/bsc-bc.