Colleges in Ahmedabad

Yes, with 82% in class 12th, you can get admission in HLCC.

Well,
The above said marks are enough marks to secure your seat for admission in both the colleges.
Good luck.

Eigibility Criteria for admission:
Minimum 50% required in graduation & must be a graduate in science disciplines, pharmacy or dental of this university or any other university recognised as equivalent.
https://www.shiksha.com/science/course/m-sc-in-forensic-science-gujarat-university-navrangpura-ahmedabad-120862

They provide good placement. Every year 70 percent students get placement from here. You can take admission here if you focus then you can get placement here. Good luck.

Kindly visit this link:
https://www.shiksha.com/college/madras-institute-of-technology-mit-chennai-chrompet-5948/admission

The DSITM emerged from the trust Devender Singh Educational Trust, Ghaziabad, is an autonomous, self-supporting institution starting with session 2008-09 with SEED support from the AICTE, New Delhi and Uttar Pradesh Technical University Lucknow (UPTU). To provide with excellent infrastructure and faculty with technologies and their societal, scientific, industrial and financial applications is mission of DSITM.

No, you are not eligible to apply for M.Sc forensic science.
Because those who pursue engineering or some other science courses are only eligible to pursue this PG.