UGC-NET Forensic Science
Exam-prep notes for UGC-NET Paper 2 (subject code 82, Forensic Science). Mapped one-to-one to NTA's 10 syllabus units, with verbatim syllabus anchors, PYQ pointers and MCQ takeaways. Companion to the ForensicSpot book; every topic links to the matching book chapter for the deep dive.
- 100hours
- 83topics
- 10modules
Unit I · Foundations of Forensic Science
Forensic science definition and history; physical evidence and chain of custody; crime scene; criminal investigations (deaths, assaults, sexual offences, poisoning, vehicular accidents); courts and expert testimony; FSLs, NCRB and NICFS; fundamental rights (Articles 14–22); criminal profiling and the three lie-detection tools; quality control in forensic institutions.
Start module- Forensic Science: Definition, History, Scope and EthicsUGC-NET Unit I notes: what forensic science is under Indian statute, the Galton-Bertillon-Locard lineage, the scope across modern sub-disciplines, and the ethics rules every analyst must follow. PYQ pointers + MCQ takeaways.8 min
- Physical Evidence: Nature, Types, Collection and Chain of CustodyUGC-NET Paper 2 Unit I notes on physical evidence: nature, classification, search methods (spiral, grid, strip, zone), collection and preservation, packaging, forwarding under BNSS 2023, and BSA 2023 chain-of-custody.14 min
- Crime Scene: Nature, Types and PreservationUGC-NET Paper 2 Unit I notes on crime scenes: definition, classification (indoor/outdoor/mobile, primary/secondary), securing and cordoning, scene preservation under BNSS 2023 Section 176(3), and the SOCO workflow.13 min
- Criminal Investigations: Deaths, Assaults, Poisoning and Vehicular AccidentsUGC-NET Paper 2 Unit I notes on investigating unnatural deaths, criminal assaults, sexual offences, poisoning and vehicular accidents under BNSS 2023 and BNS 2023, with FSL-team SOPs.16 min
- Courts: Jurisdiction, Admissibility and Expert TestimonyUGC-NET Paper 2 Unit I notes on Indian court hierarchy, powers and jurisdiction, admissibility under BSA 2023 (Sections 39, 45, 61-63), expert opinion, and the BNSS 2023 framework for expert testimony.15 min
- Organisation of FSLs, NCRB and NICFSUGC-NET Paper 2 Unit I notes on the Indian forensic ecosystem: DFSS, seven CFSLs, state SFSLs, GEQDs, NCRB (FIR/SCRB/CCTNS), NICFS, NFSU, and reporting lines under MHA.14 min
- Fundamental Rights (Articles 14-22) and Forensic PracticeUGC-NET Paper 2 Unit I notes on Right to Equality (Articles 14-18), Right to Freedom (Articles 19-22), and how they shape Indian forensic practice (Selvi 2010, custodial interrogation, sample collection).14 min
- Criminal Profiling, Polygraphy, Narco-Analysis and Brain MappingUGC-NET Paper 2 Unit I notes on victim/offender profiling, polygraph (control-question, GKT), narco-analysis (sodium pentothal), brain electrical oscillation signature (BEOS), and the Selvi v Karnataka 2010 consent rule.15 min
- Quality Control Management in Forensic InstitutionsUGC-NET Paper 2 Unit I notes on quality systems in Indian forensic labs: NABL ISO/IEC 17025 accreditation, SWGDOC/SWGFEX guidelines, proficiency testing, audit trail, DFSS quality manual, and CAP/ASCLD frameworks.13 min
Unit II · Forensic Instrumentation
Microscopy (polarizing, comparison, stereoscopic, fluorescent, electron); spectrophotometry (UV, visible, IR, Raman, AAS, AES); neutron activation analysis; X-ray techniques (XRD, XRF); mass spectroscopy; chromatography (TLC, GLC, HPLC, HPTLC); hyphenated techniques (GC-MS, LC-MS, IR-MS, ICP-MS); electrophoresis (high and low voltage, immunoelectrophoresis); immunoassays.
Start module- Microscopy for Forensic Science: Polarizing, Comparison, Stereoscopic, Fluorescent and ElectronFive microscope families NTA tests on, side-by-side: polarizing, comparison, stereoscopic, fluorescence and electron (SEM/TEM). Resolution, application, Indian CFSL use.12 min
- Spectrophotometry for Forensic Science: UV, Visible, IR, Raman, AAS and AESBeer-Lambert law, the IR fingerprint region, Raman vs IR selection rules, AAS hollow-cathode lamps and AES/ICP plasma. Indian forensic applications across drugs, paints, GSR and toxic-metal casework.13 min
- Neutron Activation Analysis (NAA) in Forensic ScienceThermal neutron capture, HPGe gamma spectrometry, INAA vs RNAA, historical GSR and hair casework (Napoleon), and why ICP-MS displaced NAA in Indian labs (with BARC Trombay context).9 min
- X-ray Techniques in Forensic Analysis: XRD, XRF and X-ray ImagingX-ray production, Bragg's law, XRD for crystalline phase ID, EDXRF vs WDXRF for elemental analysis, and Indian forensic use across paint, glass, soil, GSR and counterfeit currency.11 min
- Mass Spectroscopy: Principles, Instrumentation and Forensic ApplicationsIonisation (EI, CI, ESI, MALDI), mass analysers (quadrupole, TOF, ion trap), m/z and the nitrogen rule, spectral interpretation, and forensic applications across drugs, accelerants, explosives and toxicology.13 min
- Chromatographic Techniques in Forensic Science: TLC, GLC, HPLC and HPTLCStationary vs mobile phase, Rf values, isocratic vs gradient elution, GLC detectors (FID, ECD, TCD, MSD), and how Indian SFSLs use TLC, GLC, HPLC and HPTLC across drugs, ink, dye and explosives.14 min
- Hyphenated Techniques in Forensic Science: GC-MS, LC-MS, IR-MS and ICP-MSWhy separation and identification are hyphenated, the four big systems NTA tests (GC-MS, LC-MS, IR-MS, ICP-MS), and how CFSL Hyderabad and Chandigarh actually run them.13 min
- Electrophoresis in Forensic Science: High Voltage, Low Voltage and ImmunoelectrophoresisElectrophoretic mobility, paper/agarose/PAGE/IEF support media, low- vs high-voltage runs, immunoelectrophoresis with precipitin arcs, and capillary electrophoresis in modern DNA profiling (CDFD Hyderabad, state DNA labs).11 min
- Immunoassays in Forensic Science: Principle, Types, Techniques and ApplicationsAntigen-antibody specificity, competitive vs non-competitive formats, RIA / ELISA / FPIA / EMIT / lateral-flow, the screen-then-confirm workflow, and the NDPS rapid-test kits used by Indian state police.11 min
Unit III · Forensic Serology, DNA and Wildlife Forensics
Detection and identification of blood stains; determination of species of origin; blood group systems (ABO, Rh, MNS); blood-grouping techniques from stains (Lattes, absorption-elution, absorption-inhibition, mixed agglutination); seminal and other body fluids plus RBC enzymes and serum proteins of forensic significance; disputed paternity and maternity; DNA structure, genetic markers, extraction and STR profiling; DNA phenotyping and RNA profiling; wildlife forensics under the Wildlife Protection Act 1972.
Start module- Detection and Identification of Blood Stains in Forensic ScienceThe 3-step workflow (search, presumptive, confirmatory): Kastle-Meyer, LMG, Luminol, Takayama, Teichmann, and the field workflow in Indian SOCO/SFSL practice under BNSS Section 176(3).12 min
- Determination of Species of Origin from Blood and Body FluidsUhlenhuth precipitin (1901), Ouchterlony double diffusion, crossover-electrophoresis, modern cyt-b PCR and COI barcoding. Indian institutional anchors at WII Dehradun and CCMB LaCONES.11 min
- Blood Group Systems in Forensic Science: ABO, Rh, MNS and BeyondLandsteiner 1901 ABO, Rh and the D antigen, MNS Kell Duffy Kidd Lewis, secretor status, and the Bombay phenotype (Bhende 1952 KEM Mumbai), plus their forensic significance.12 min
- Techniques for Determining Blood Groups from BloodstainsLattes crust direct method, absorption-inhibition, absorption-elution (Kind 1960 gold standard), and mixed agglutination for tiny stains. Sensitivity hierarchy and Indian CFSL workflow under BSA 2023.11 min
- Body Fluids, RBC Enzymes and Serum Proteins of Forensic SignificanceSeminal-fluid detection (acid phosphatase, Florence, Barberio, PSA), saliva alpha-amylase, polymorphic RBC enzymes (PGM, EsD, AK, GLO) and serum proteins (Hp, Gc, Tf), and the transition to DNA-era serology.15 min
- Disputed Paternity and Maternity: Forensic Testing in IndiaSection 112 IEA / Section 116 BSA presumption of legitimacy, Goutam Kundu and Bhabani Prasad Jena, classical exclusion vs modern autosomal STR PI/CPI, and CDFD Hyderabad as the DNA referral lab.12 min
- DNA in Forensic Science: Structure, Genetic Markers, Extraction and ProfilingWatson-Crick double helix, autosomal STR vs Y-STR vs mtDNA vs SNP, organic / Chelex / silica / magnetic-bead extraction, PCR + multiplex STR + ABI 3500 capillary electrophoresis, and Indian DNA Data Bank under DFSS.17 min
- DNA Phenotyping and RNA Profiling in Forensic ScienceHIrisPlex-S for eye and hair colour, biogeographic ancestry inference, Parabon Snapshot, mRNA and miRNA body-fluid panels, methylation-based age estimation, and the ethics and admissibility frame in India.12 min
- Wildlife Forensics in India: Wildlife Protection Act 1972, Scope and EvidenceWLPA 1972 Schedules I-VI and CITES, morphological + cyt-b / COI molecular ID, and the Indian institutional ecosystem of WII Dehradun, CCMB LaCONES, SACON, WCCB and NTCA.13 min
Unit IV · Forensic Toxicology
Analysis of ethyl alcohol in beverages, biological fluids and breath; methanol, denaturants and illicit liquors; chemicals in trap cases; metabolism and chemical examination of insecticides and pesticides, tranquillizers and sedatives, hypnotics, stimulants, narcotics, opiates and drugs of abuse with their toxicity; plant poisons; metallic poisons; extraction, isolation and clean-up procedures and identification of common poisons from viscera, tissues and body fluids.
Start module- Analysis of Ethyl Alcohol in Beverages, Blood and BreathHeadspace GC-FID for blood and urine, ADH enzymatic method, Widmark formula, infrared and fuel-cell breath analyzers, Section 185 MV Act 1988 and BNS 2023 culpable-driving provisions, with sampling rules from Bachan Singh and AIIMS protocols.14 min
- Analysis of Methanol, Denaturants and Illicit LiquorsMethanol toxicity through formic acid, chromotropic acid and GC-FID detection, denaturant markers (pyridine, diethyl phthalate, MIBK), country-liquor hooch tragedies (Cuttack, Saran, Sangrampur) and the Mysore Excise Act sampling workflow.13 min
- Analysis of Chemicals in Trap Cases (Phenolphthalein, Anthrone)Phenolphthalein-sodium-carbonate hand-wash for currency-note traps under Prevention of Corruption Act 1988, anthrone test for sucrose, Marquis variants for tampered samples, and the ACB/CBI/Lokayukta SOP for trap case sampling and lab transmission.10 min
- Insecticides and Pesticides: Organochlorines, Organophosphates and CarbamatesClassification (OC, OP, carbamate, pyrethroid, aluminium phosphide), cholinesterase inhibition mechanism, atropine and PAM antidotes, GC-ECD / GC-NPD detection, viscera workup, and the Indian context of endosulfan (Kasaragod), monocrotophos (Bihar mid-day-meal) and aluminium phosphide suicides.15 min
- Tranquillizers, Sedatives and Hypnotics: Forensic AnalysisBarbiturates, benzodiazepines (alprazolam, diazepam, nitrazepam), Z-drugs (zolpidem), color tests (Zwikker, Koppanyi, Dille-Koppanyi), immunoassay screen, GC-MS and LC-MS-MS confirmation, NDPS / Schedule H/H1 status and the Indian stupefying-substance criminal cases.13 min
- Stimulants, Narcotics and Opiates: Forensic ToxicologyAmphetamines and methamphetamine, cocaine and benzoylecgonine, morphine / heroin / codeine, Marquis / Mecke / Scott / Duquenois color tests, GC-MS confirmation, NDPS Act 1985 schedules and commercial-quantity thresholds, with CFSL / NCB casework anchors.14 min
- Drugs of Abuse: Screening and Confirmation ProtocolsSAMHSA cut-offs, immunoassay-to-GC-MS / LC-MS-MS workflow, urine vs blood vs oral fluid vs hair matrices, SOFT / GTFCh thresholds, NDPS sampling under Standing Order 1/89, and the Indian DFSS forensic-toxicology SOP.13 min
- Plant Poisons: Abrus, Ricinus, Datura, Aconite and OleanderAbrin and ricin lectins, Datura tropane alkaloids (highway-robbery dosing), aconitine cardiotoxicity, oleandrin and yellow-oleander suicides (Sri Lanka, Kerala), strychnine and nux vomica, plus microscopic seed ID and chromogenic / TLC / LC-MS confirmation in Indian SFSLs.14 min
- Metallic Poisons: Arsenic, Mercury, Lead and ThalliumReinsch and Marsh classical tests, dry ashing and wet digestion, AAS / ICP-MS / ICP-OES quantification, hair and nail segmental analysis for chronic exposure, BIS drinking-water limits, and Indian arsenicosis (West Bengal, Bihar) and lead-paint casework.14 min
- Extraction, Isolation and Clean-up of Poisons from VisceraStas-Otto acid-base fractionation, ammonium-sulphate precipitation, steam distillation, microdiffusion (Conway cell), modern SPE and QuEChERS clean-up, viscera receipt under BNSS Section 176 / Form 21, and Indian DFSS / CFSL viscera-analysis SOP.15 min
Unit V · Forensic Ballistics and Tool Marks
Firearms types, classification, ammunition and compositions; forensic examination of firearms, bullets, shells and cartridges; gunshot residue analysis; velocity, penetration, dispersion, ricochet, accidental discharge and range determination; examination of country-made firearms; internal, external and terminal ballistics; tool marks; restoration of erased markings on metal surfaces.
Start module- Firearms: Types, Classification, Ammunition and CompositionsRifled vs smoothbore, handguns and rifles and shotguns, anatomy of a cartridge (case, primer, propellant, projectile), smokeless vs black powder, lead-styphnate / barium-nitrate / antimony-sulphide primer chemistry, and the Arms Act 1959 + Arms Rules 2016 frame for Indian licensed and prohibited bores.13 min
- Forensic Examination of Firearms, Bullets, Shells and CartridgesComparison microscopy, land and groove counts, GRC (groove ratio), striation matching, breech-face and firing-pin and ejector and extractor marks, IBIS / NIBIN-style databases, AFTE conclusion scale, and Indian CFSL Chandigarh ballistics workflow.14 min
- Gunshot Residue (GSR) Analysis: Detection MethodsDermal nitrate / paraffin test (historical, banned), Modified Griess for nitrites, sodium rhodizonate for lead, SEM-EDX detection of the Pb-Ba-Sb three-component particle, ICP-MS quantification, lead-free Sintox primers, and Indian collection SOPs with adhesive lifts.14 min
- Velocity, Penetration, Dispersion, Ricochet and Accidental DischargeMuzzle velocity by chronograph, kinetic energy and ordnance-gelatin penetration, shotgun pellet dispersion (cylinder, modified, full choke), ricochet angles and Pb / Cu transfer smears, and accidental-discharge investigation (drop tests, sear wear, double-action mechanics).13 min
- Determination of Range of Firing in Firearm CasesContact, close, intermediate and distant shots; soot blackening, powder tattooing, abraded collar, muzzle imprint and stellate wound; Walker test on filter paper, modified Griess for nitrites, sodium rhodizonate for lead, comparison with test-fired panels at known distances.14 min
- Examination of Country-Made Firearms (Kattas and Tamanchas)Desi katta / tamancha / pipe-gun geometry, smoothbore unrifled barrels, oversized chambers, tape-and-wire repairs, identifying improvised vs factory weapons, and the Munger / Khargone / Khurja arms-trafficking corridors under the Arms Act 1959 and BNS provisions.12 min
- Internal, External and Terminal Ballistics: BasicsInternal (primer ignition, propellant burn, gas expansion, barrel time, recoil), external (trajectory, drag, gravity drop, wind, Magnus effect), and terminal (penetration, permanent and temporary cavity, fragmentation, hydraulic shock, yaw and tumble).13 min
- Tool Marks: Meaning, Types and ExaminationImpressed vs striated vs combination marks, class vs sub-class vs individual characteristics, Mikrosil silicone casting, comparison-microscope matching, AFTE conclusion scale, and India tool-mark casework in housebreaking, vehicle theft and safe-breaking.12 min
- Restoration of Erased Markings on Metal SurfacesWhy chemical etching works (cold-worked strained zone), Fry's reagent for steel, Davis reagent and Villela's for stainless, sodium-hydroxide for aluminium, copper-chloride for lead and zinc, magnetic-particle for ferromagnetic, ultrasonic and heat-tinting techniques, and Arms Act / chassis-number casework in India.13 min
Unit VI · Fire, Arson, Explosives, IEDs and Forensic Photography
Analyses of petroleum products and other incendiary materials; fire and arson investigation, cause-origin determination, burn patterns; explosives definition, types and analyses; post-blast residue analysis; country-made bombs and IEDs and their examination; investigation in explosion and arson cases; forensic photography types and applications in criminal investigation and evidence examination.
Start module- Analysis of Petroleum Products and Fire AccelerantsGasoline, kerosene, diesel and paraffin as ignitable liquids; ASTM E1387/E1618 classification; passive headspace SPME-GC-MS; activated-charcoal-strip extraction; ignitable liquid residue (ILR) workup from fire debris; CFSL Hyderabad fire-lab SOP.14 min
- Fire and Arson Investigation: Cause, Origin and Burn PatternsFire tetrahedron (fuel, heat, oxygen, chain reaction); V-pattern, low burns, pour patterns, multiple points of origin; NFPA 921 systematic methodology; accidental vs incendiary; electrical-fault signatures; smoke and char depth as origin indicators.14 min
- Explosives: Definition, Types and ClassificationLow (deflagrating) vs high (detonating) explosives; primary (lead azide, PETN), secondary (RDX, HMX, TNT, ANFO) and tertiary categories; brisance, VoD, oxygen balance, sensitivity; military vs commercial vs improvised; Indian Explosives Act 1884 and Explosive Substances Act 1908.14 min
- Forensic Analysis of Explosives and Post-Blast ResiduesColor tests (modified Griess for nitrites, Janowski for nitroaromatics, diphenylamine for nitrates), TLC, GC-ECD and GC-TEA, LC-MS for non-volatile organics, IMS (Smiths IONSCAN), Raman and FTIR, residue-swab SOP, and the NSG / NIA / CFSL post-blast workflow.15 min
- Country-Made Bombs and Improvised Explosive Devices (IEDs)Pipe bombs, pressure-cooker bombs, tiffin bombs (Mumbai 1993, 26/11), nail bombs and shrapnel-loaded devices; IED four-component model (initiator, main charge, switch, power source); render-safe procedures; LeT, Indian Mujahideen, Maoist / Naxal casework.14 min
- Investigation of Explosion and Arson CasesScene management under BNSS Section 176, seat-of-explosion identification, crater analysis, blast over-pressure mapping, debris layering, NSG / NIA / state Bomb Disposal Squad workflow, fire-debris sampling cans and quart-sized nylon bags, sealed-container chain of custody.13 min
- Forensic Photography: Types and ApplicationsOverall, mid-range and close-up triad; ABFO scale, orthogonal vs perspective views; UV / IR / alternate-light photography; panoramic and 360° scanning; photogrammetry; tripod and ring-flash discipline; BSA Section 39 admissibility and Indian CFSL photography-unit SOP.14 min
Unit VII · Trace Evidence and Cyber Forensics
Hair and fibers (nature, types, structure, examination); pollens and diatoms in forensic investigation; dust and soil examination; paint, lacquer and varnishes; glass composition, fractures and examination; cement, mortar and concrete; computer forensics with digital-evidence seizure and acquisition; mobile phone forensics.
Start module- Hair and Fibers: Nature, Types, Structure and ExaminationHair morphology (cuticle, cortex, medulla), human vs animal, race / age / body-area determination, root-shed phase; fibre types (natural vs synthetic), microscopic identification, FTIR / Raman / pyrolysis-GC-MS, polarising microscopy, and the Indian SFSL trace-evidence workflow.14 min
- Pollens and Diatoms in Forensic InvestigationForensic palynology (pollen morphology, sexine / nexine, geo-locating suspects), diatom test for drowning (acid digestion of femur marrow for siliceous frustules), Naviculaceae / Pinnularia / Cymbella distribution, and Indian application in IUC drowning cases and post-mortem geolocation.13 min
- Dust and Soil: Nature, Types and Forensic ExaminationSoil composition (mineral, organic, biological); particle-size distribution; colour comparison (Munsell soil charts); pH, density-gradient and stereomicroscopy; XRD for mineral phase; pollen / mycology overlap; and Indian context of soil transfer in hit-and-run, body-disposal and arson cases.13 min
- Paint, Lacquer and Varnishes: Nature, Composition and Forensic ExaminationPaint composition (binder, pigment, solvent, additive); automotive multi-layer paint, architectural paint, lacquer and varnish; PDQ database; SEM-EDX, FTIR, micro-Raman, pyrolysis-GC-MS layer analysis; hit-and-run paint chip transfer cases in India.14 min
- Glass: Composition, Types, Fractures and ExaminationSoda-lime, borosilicate, tempered, laminated, bulletproof; refractive index (Becke line, GRIM3 oil immersion); fracture analysis (radial vs concentric, 3R rule, Wallner lines, bullet hole inward vs outward); SEM-EDX elemental fingerprinting in Indian SFSLs.14 min
- Cement, Mortar and Concrete: Composition and Forensic AnalysisOPC vs PPC vs PSC composition (clinker, gypsum, fly-ash, slag); mortar mix, concrete aggregates; XRD phase ID (alite, belite, ettringite), SEM-EDX, FTIR; forensic use in IED debris, building-collapse investigation, and Indian construction-fraud cases.12 min
- Computer Forensics: Cyber Crimes, Digital Evidence, Seizure and AcquisitionCyber-crime taxonomy under IT Act 2000 and BNS 2023; volatility order; live vs dead acquisition; bit-stream imaging (dd, FTK Imager, EnCase); hash integrity (MD5 / SHA-256); write-blockers; BSA 2023 Section 63 certificate; Indian CFSL Hyderabad digital-forensics SOP.15 min
- Mobile Phone Forensics: Acquisition and ExaminationLogical / file-system / physical / JTAG / chip-off acquisition; Cellebrite UFED, MSAB XRY, Magnet AXIOM; SQLite app databases (WhatsApp, Signal, Telegram); IMEI / IMSI / SIM forensics; iOS vs Android security model; cell-tower CDR analysis in Indian investigations.15 min
Unit VIII · Fingerprints, Track Marks, Biometrics and Voice
Fingerprints (history, characteristics, types, classification, preservation, development, lifting, comparison, chance prints, computerisation, AFIS); track marks (foot prints, shoe prints, tire marks, preservation, casting, comparison, skid marks, gait); biometric systems of identification and their relevance; voice analysis (vocal apparatus, voice spectrography, speaker identification, legal aspects and limitations).
Start module- Fingerprints: History, Characteristics, Types and ClassificationGalton 1892, Henry 1897 classification system at Indian FPB Kolkata (Azizul Haque + Hem Chandra Bose), friction ridge biology, Galton points and minutiae types, arch / loop / whorl families, primary classification formula, NCRB Central Fingerprint Bureau and state FPBs.14 min
- Fingerprint Development, Lifting and AFIS ComparisonLatent print development (powder, ninhydrin, DFO, cyanoacrylate fuming, RUVIS, vacuum metal deposition), lifting on porous vs non-porous surfaces, ACE-V comparison methodology, NAFIS / AFIS / IAFIS / Interpol AFIS, and BSA Section 39 expert-opinion admissibility.15 min
- Track Marks: Foot, Shoe, Tire, Skid Marks and Gait PatternBarefoot vs shod prints, individual vs class characteristics, Mikrosil and dental-stone casting; tire tread classes and TWI; skid-mark length to vehicle-speed estimation via drag factor; gait pattern (stride, cadence, step length, foot angle) and CCTV gait analysis.13 min
- Biometric Systems of Identification and Their RelevancePhysiological (fingerprint, iris, retina, face, palm vein) vs behavioural (voice, gait, signature, keystroke) biometrics; FAR / FRR / EER / ROC; UIDAI Aadhaar architecture; criminal AFIS vs civil biometric; presentation-attack detection (PAD) against spoofing.13 min
- Voice Analysis: Spectrography, Speaker Identification and Legal AspectsVocal apparatus (larynx, vocal folds, formants), voice spectrogram (sonogram), aural-spectrographic vs automatic speaker recognition, IAFPA / ENFSI methods, MFCC features, Indian admissibility frame post Selvi v Karnataka 2010, and CFSL audio-forensics SOP.14 min
Unit IX · Questioned Documents
Documents (definition, types, preliminary examination); reproduction of documents through photographic and mechanical means; alterations (erasures, obliterations, additions); indentations, secret writings and charred documents; inks, papers and age of documents; examination of typescripts, printed matter, currency notes, lottery tickets and mechanical impressions; handwritings (class and individual characteristics, factors, standard samples, comparison); anonymous and disguised writings; identification of signatures, detection of forgeries; examination of credit cards and similar materials.
Start module- Documents: Definition, Types and Preliminary ExaminationDocument definition under BSA 2023 Section 2(1)(d) and IPC / BNS, types (public, private, electronic, negotiable), preliminary examination workflow (visual, oblique light, magnification, transmitted light, UV / IR), document submission to CFSL / SFSL QD division, and chain-of-custody under BNSS 2023.13 min
- Reproduction of Documents: Photographic and Mechanical MeansPhotographic reproduction (oblique, transmitted, UV, IR, IR luminescence, ESDA, VSC-8000), mechanical reproduction (photocopy, laser print, inkjet), examination of reproduced documents, identifying source machine via banding / drum defects / trash marks, and admissibility of reproductions under BSA 2023.13 min
- Examination of Alterations: Erasures, Obliterations and AdditionsMechanical and chemical erasures, obliterations (over-writing, ink smudge, correction fluid), additions (interlineations, insertions, post-dated entries), oblique light, transmitted light, UV / IR luminescence, VSC-8000, ESDA for indentations, and Indian case-law on tampered cheques and wills.14 min
- Indentations, Secret Writings and Charred DocumentsIndented impressions via oblique light and ESDA (Foster + Freeman), secret writings (sympathetic inks, lemon juice, starch-iodine, UV-fluorescent inks, steganography), charred document recovery (glycerin chamber, polyvinyl-acetate spray, IR imaging), and Indian terror / ransom-note casework.13 min
- Inks, Papers and Age of DocumentsInk composition (iron-gall, dye-based, pigment, ballpoint, gel, UV-fluorescent), TLC / HPTLC / Raman / FTIR / LDI-MS ink comparison, paper fibres and watermarks and optical brighteners, ink-age dating (phenoxyethanol decay, dye degradation, ASTM E2789), Aginsky and Brunelle methods.15 min
- Typescripts, Printed Matter, Currency Notes, Lottery Tickets and Mechanical ImpressionsTypewriter individuality (font defects, alignment, ribbon impressions), laser / inkjet print examination (banding, drum defects, machine-identification dots), security features of Indian currency (Mahatma Gandhi New Series, intaglio, micro-letters, latent image, OVI, security thread), counterfeit detection under FICN, and lottery-ticket / postage-stamp examination.15 min
- Handwriting: Class and Individual Characteristics, Factors, Standard SamplesClass vs individual handwriting characteristics (letter design, slant, spacing, line quality, pen lift, pressure, baseline, ratio, connections), 21 ASTM E2290 features, factors affecting handwriting (age, illness, posture, intoxication, writing instrument), and standard sample collection (request vs collected exemplars) under BSA Section 39.15 min
- Anonymous and Disguised Writings; Signature and Forgery DetectionAnonymous letter analysis (linguistic + handwriting), disguise methods (slant change, hand change, block letters, mimicry), signature classification (formal, cursive, initials, mark), forgery types (simulated, traced, freehand, blind, lifted, electronic), Section 463-465 BNS forgery provisions, and the State of Maharashtra v Damu and Murari Lal v State of MP admissibility precedents.16 min
- Forensic Examination of Credit Cards and Similar MaterialsCredit / debit card anatomy (PVC layers, magnetic stripe ISO/IEC 7811, EMV chip, hologram, signature panel, CVV), skimming and cloning detection, BIN ranges, embossing vs flat-printing, NFC tokenisation, IT Act 2000 Section 66C / 66D and BNS provisions, and the RBI / NPCI fraud-monitoring frame.13 min
Unit X · Forensic Medicine and Anthropology
Modes and manner of death, sexual offences and amendments under BNS 2023 / POCSO; post-mortem examination, post-mortem changes, estimation of time since death; injuries and wounds (types, medicolegal importance, gunshot wounds); determination of species of origin, sex, age, stature and individual identification through skeletal remains; identification through skull superimposition and facial reconstruction; human dentition, type of teeth, age estimation and bite marks; forensic entomology (insects of forensic importance, carrion succession, applications).
Start module- Modes and Manner of Death: Forensic ThanatologyCause vs mechanism vs manner; the three classical modes of death (coma, syncope, asphyxia); the five NAME manners (natural, accidental, suicidal, homicidal, undetermined); BNSS 2023 Section 194 inquest, BNS 2023 homicide provisions, and forensic-medical workflow in Indian post-mortems.14 min
- Sexual Offences: Medicolegal Importance and AmendmentsRape definition under BNS 2023 Sections 63-71 (replacing IPC 375-376), POCSO 2012 schema, two-finger test ban (Lillu 2013), Nirbhaya Criminal Law Amendment 2013, Disha 2018, Aparajita Bill 2024 context, medicolegal examination per modified Goa Medical Protocol, and Section 27 IEA / Section 23 BSA evidentiary value.16 min
- Post-Mortem Examination, Post-Mortem Changes and Time Since DeathPost-mortem workflow under BNSS Section 194, primary changes (algor mortis, livor mortis, rigor mortis, decomposition putrefaction adipocere mummification), secondary changes, time-since-death estimation (Henssge nomogram, Newton's law of cooling, gastric emptying, vitreous K+ Madea formula), and Indian CFSL / GMC mortuary practice.16 min
- Injuries and Wounds: Types, Medicolegal Importance and Gunshot WoundsMechanical injuries (abrasion, contusion, laceration, incised, stab, chop), thermal and electrical, simple vs grievous hurt under BNS 2023 Sections 114-118, antemortem vs postmortem distinction, defence wounds, gunshot wounds (entry vs exit, range, abraded collar, GSR), and forensic medical certification.16 min
- Skeletal Remains: Species, Sex, Age, Stature and Individual IdentificationBone vs non-bone, human vs animal (cortical thickness, Haversian density), sex from pelvis and skull (subpubic angle, sciatic notch, glabella, mastoid), age from ossification, epiphyseal fusion and Gustafson teeth, stature from long-bone regression (Trotter-Gleser, Pan, Saxena Indian formulae), individual ID from anomalies and DNA.17 min
- Skull Superimposition and Facial ReconstructionVideo superimposition workflow (skull-photo overlay, landmark matching), Indian Talwar / Nupur Sehgal v State of MP context, Manchester three-dimensional facial reconstruction method, computerised 3D reconstruction, AnthropoScope and FACES software, soft-tissue thickness Indian data (Kallur, Sahni), and casework at AIIMS Delhi and CFSL Kolkata anthropology units.15 min
- Human Dentition: Types of Teeth, Age Estimation and Bite MarksDeciduous (20) vs permanent (32) dentition, dental formula and four tooth types, eruption sequence, age estimation (Gustafson 1950 six criteria, Demirjian, Nolla, Cameriere age method), bite-mark analysis (ABFO 1986 guidelines, Indian admissibility post Krishan Kumar Malik 2011), and Indian forensic-odontology practice at AIIMS and AIIDS.15 min
- Forensic Entomology: Insects of Forensic Importance and ApplicationsSarconecrophagous insects (Calliphoridae, Sarcophagidae, Muscidae blowflies and flesh flies), four-wave carrion succession (Megnin), accumulated degree days (ADD) for post-mortem interval, larval stage identification, Indian species Chrysomya megacephala and rufifacies, ICMR-VCRC Puducherry and NIE Bengaluru anchors, applications in PMI / toxicology / movement of body.16 min