Forensic Chemistry: Foundations
Published:
Questions
30
Duration
30 min
Faculty-reviewed
30
Updated
03 May 2026
About this mock
This mock covers the foundational vocabulary and concepts a first-year MSc Forensic Science student must know about Forensic Chemistry as it appears in the FACT exam syllabus (Elective IV: Forensic Chemical Sciences — Forensic Chemistry I and II, with crossover into Instrumental Techniques). Thirty questions across alcoholic beverages and methanol toxicity, denaturants and the State Excise Acts, petroleum products and adulteration with kerosene (BIS IS 2796 / IS 1448 and ASTM D86 / D93), arson investigation (NFPA 921, ASTM E1412 / E1618), the trap-case phenolphthalein-on-alkali colour reaction, classification of explosives (primary vs secondary), IEDs and post-blast residue analysis, the NDPS Act 1985 (Sections 8, 22, 27, 50; small/intermediate/commercial quantity scheme), pharmacological classification of drugs (narcotics, depressants, stimulants, hallucinogens), instrumental drug analysis (TLC/HPTLC, GC-MS, FTIR — SWGDRUG categories), and pesticide chemistry (organochlorines, organophosphates, carbamates, pyrethroids, phosphides; extraction by QuEChERS).
It is pitched at BSc and first-year MSc Forensic Science students at NFSU, LNJN-NICFS and other Indian universities, FACT and FACT Plus aspirants, and UGC-NET candidates who need the Forensic Chemistry foundations locked in before tackling the application-level papers on toxicology, instrumental techniques, and case studies. Forensic Chemistry is one of the most heavily examined sections of FACT, and the questions here target the definitions, statute sections, and bench techniques most reliably asked.
Topics covered:
- Ethanol vs methanol — chemistry, toxicity, FSL discrimination
- Denatured spirit and the State Excise Acts
- Petrol and diesel adulteration — BIS IS 2796, ASTM D86, kerosene as adulterant
- Flash point (Pensky-Martens, ASTM D93) and distillation curve discrimination
- Arson scene origin determination, debris collection, headspace GC-MS (ASTM E1412 / E1618)
- Trap-case phenolphthalein chemistry — pink colour, alkali wash, TLC + UV-Vis recovery
- Primary vs secondary (high) explosives; IED component anatomy; post-blast sampling
- Explosive residue analysis — TLC/HPTLC, HPLC, GC-MS, LC-MS, FTIR, XRD
- NDPS Act 1985 — Sections 8 (prohibition), 27 (consumption), 50 (search safeguard); small/commercial quantity scheme
- Pharmacological classification — narcotics, depressants, stimulants, hallucinogens
- Drug analysis — TLC/HPTLC + colour reagents (Marquis, Mecke, Mandelin), GC-MS, FTIR (SWGDRUG categories)
- Pesticide groups (OC, OP, carbamate, pyrethroid, phosphide), formulations (EC, WP, SC, G, DP), QuEChERS extraction
Each question carries a detailed 220+ word explanation citing standard references — Modi's Medical Jurisprudence and Toxicology, Saferstein's Criminalistics (12th edition), Sharma's Forensic Science in Criminal Investigation and Trials (5th edition), Vogel's Practical Organic Chemistry, BIS IS 2796 / IS 324 / IS 1448, ASTM D86 / D93 / E1412 / E1618, NFPA 921, the NDPS Act 1985 with its 2001 quantity-notification, the Insecticides Act 1968, and the SWGDRUG and UNODC monographs. Allow 30 minutes; the explanations are long enough to use as study notes by themselves. If you can pass this mock comfortably, you have the FACT Forensic Chemistry vocabulary that the application-level papers build on.
Sources & references
Questions in this mock are written and verified against the following sources. Citations are recorded per question and shown in the explanation after submission.
- cited in 4 questions
Sharma, B.R. — Forensic Science in Criminal Investigation and Trials
5th Edition, Chapter on Trap Case Analysis (phenolphthalein and degradation products)
- cited in 3 questions
Modi, Jaising P. — A Textbook of Medical Jurisprudence and Toxicology
26th Edition, Chapter on Alcohol (ethanol vs methanol intoxication)
- cited in 2 questions
Vogel's Textbook of Practical Organic Chemistry
Chapter on Identification of Alcohols (acidified potassium dichromate test)
- cited in 2 questions
Saferstein, Richard — Criminalistics: An Introduction to Forensic Science
12th Edition, Chapter on Drugs (pharmacological classification)
- cited in 1 question
Skoog, West, Holler, Crouch — Fundamentals of Analytical Chemistry
9th Edition, Chapter on Infrared Spectrophotometry (FTIR principles and applications)
- cited in 1 question
ASTM D86 — Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure
Equivalent to BIS IS 1448 P-18
- cited in 1 question
ASTM E1618 — Standard Test Method for Ignitable Liquid Residues in Extracts from Fire Debris Samples by Gas Chromatography-Mass Spectrometry
Section on classification of ignitable liquids (gasoline, MPD, HPD, etc.)
- cited in 1 question
Narcotic Drugs and Psychotropic Substances Act, 1985, read with Notification S.O.1055(E) dated 19 October 2001 (and amendments)
Schedule of small and commercial quantities for individual NDPS substances
- cited in 1 question
ASTM E1412 — Standard Practice for Separation of Ignitable Liquid Residues from Fire Debris Samples by Passive Headspace Concentration
Read with ASTM E1618 (GC-MS analysis)
- cited in 1 question
Narcotic Drugs and Psychotropic Substances Act, 1985, read with the Standing Order 1/89 (DGNCB) on sampling and analysis
Sampling, packing, analysis and report requirements for NDPS cases
- cited in 1 question
Constitution of India, Schedule 7, State List Entry 51 — and the State Excise Acts
Read with the Bombay/Karnataka/UP/Bihar State Excise Acts (state-specific)
- cited in 1 question
Insecticides Act, 1968 and Insecticides Rules, 1971 (India)
Schedule and rules on permitted formulations and labelling
- cited in 1 question
Narcotic Drugs and Psychotropic Substances Act, 1985 (Act No. 61 of 1985)
Section 8 — Prohibition of certain operations
- cited in 1 question
UNODC — Recommended Methods for the Identification and Analysis of Cocaine in Seized Materials
And the parallel UNODC monographs for amphetamines, opiates, cannabis, etc.
- cited in 1 question
AOAC Official Method 2007.01 (QuEChERS) — Pesticide Residues in Foods
Read with FAO/WHO Codex pesticide-residue analytical methods
- cited in 1 question
Bureau of Indian Standards — IS 324: Specification for Ordinary Denatured Spirit
Specified denaturants and minimum concentrations for Indian denatured spirit
- cited in 1 question
Beveridge, A. — Forensic Investigation of Explosions
2nd Edition, Chapter on Crime Scene Examination and Sample Collection
- cited in 1 question
ASTM D93 — Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
Equivalent to BIS IS 1448 P-21
- cited in 1 question
NFPA 921 — Guide for Fire and Explosion Investigations
Chapter on Origin Determination (burn patterns, V-pattern, pour pattern)
- cited in 1 question
SWGDRUG — Recommendations on the Identification of Seized Drugs
Category A / B / C technique classification (GC-MS, FTIR, NMR are Category A)
- cited in 1 question
Yinon, J. — Forensic and Environmental Detection of Explosives
Chapter on Instrumental Methods for Explosives Analysis
- cited in 1 question
Bureau of Indian Standards — IS 2796: Specification for Motor Gasolines
Read with IS 1448 P-series test methods and ASTM D86 (distillation)
- cited in 1 question
U.S. Department of Defense — DOD Dictionary of Military and Associated Terms
Definition of Improvised Explosive Device (IED) — adopted by Indian counter-terror agencies
How our mocks are built
Questions are written and edited by the ForensicSpot team and cited from peer-reviewed forensic textbooks, official syllabi and primary case law. Each one is verified before publishing. Detailed explanations show after you submit, so the test stays a real test. See a mistake? Tell us.
Common questions
What does the Forensic Chemistry: Foundations mock cover?+
This mock covers the foundational vocabulary and concepts a first-year MSc Forensic Science student must know about Forensic Chemistry as it appears in the FACT exam syllabus (Elective IV: Forensic Chemical Sciences — Forensic Chemistry I and II, with crossover into Instrumental Techniques). Thirty questions across alcoholic beverages and methanol toxicity, denaturants and the State Excise Acts, petroleum products and adulteration with kerosene (BIS IS 2796 / IS 1448 and ASTM D86 / D93), arson i
How many questions and how long is the test?+
30 multiple-choice questions, 30 minutes total. Difficulty: easy. Tier: Free.
Who is this mock for?+
Forensic science students and aspirants who want timed, exam-style practice with explanations and verified source citations on Forensic Chemistry, FACT. Useful for postgraduate entrance preparation and for BSc / MSc forensic students testing their recall under time.
Are the questions reviewed?+
Yes — 30 of 30 questions are faculty-reviewed. Each question carries a verified source citation.
Do I need an account to take this mock?+
Yes, a free ForensicSpot account is required to start a timed attempt — this lets you save progress, see per-question explanations after submission, and track your topic-level performance over time.