FACT Aptitude: Forensic Science Foundations

This mock covers the foundational forensic science aptitude layer that every FACT entrance candidate must lock down before tackling the discipline-specific papers. Thirty questions across crime scene management and chain of custody, fingerprint patterns and latent development, bloodstain pattern analysis, basic firearms class characteristics, forensic biology and DNA short tandem repeats, instrumentation (spectrophotometry, microscopy, chromatography), digital forensics fundamentals, statistical reasoning, and the Indian forensic legal framework after the 2023 BNS / BNSS / BSA replacement of the IPC / CrPC / IEA.

It is pitched at BSc forensic science students and first-year MSc aspirants at NFSU, LNJN-NICFS, and other Indian universities, plus candidates preparing for the FACT, NFSU entrance, and university-level introductory forensic aptitude tests. Each question is conceptual or first-application level, designed to be answerable in under a minute with sound foundations.

Topics covered:

• Locard's Exchange Principle and trace evidence transfer
• Crime scene documentation, photography, and chain of custody
• Fingerprint pattern types (loop, whorl, arch) and latent development reagents (ninhydrin, luminol)
• Bloodstain pattern categories (transfer, impact, projected) and BPA terminology
• Forensic biology and DNA STR markers
• Analytical instruments: spectrophotometer, scanning electron microscopy, chromatography, write blockers
• Forensic statistics: mean, median, standard deviation
• Indian legal framework: BNS 2023 (replaces IPC), evidence integrity, evidentiary admissibility

Each question carries a detailed three-paragraph explanation with a primary source reference drawn from standard forensic textbooks (Saferstein, Modi's, Sharma), Indian statutes, and recognised authoritative resources. Allow 30 minutes; use the timer to build exam pace.