A) Administering treatment to the victim. B) Reporting the result to the police only. C) Immediately publishing the findings in a scientific journal. D) Documenting the result and preserving the sample for court evidence.
A) To identify the color and odor characteristics. B) To calculate the concentration of the chemical. C) To identify the toxic effect. D) To determine the source and legal admissibility of the evidence
A) Only notify the laboratory manager. B) Test only for lethal chemicals. C) Conduct the test and discard the sample. D) Cross-reference the substance with controlled substances schedules.
A) Allowing multiple technicians to randomly alter procedures. B) Testing only for common poisons. C) Following validated protocols and maintaining chain of custody D) Using the cheapest and fastest analytical method.
A) Trace chemicals prove guilt without further context. B) Trace chemicals may suggest exposure but must be corroborated with other evidence. C) Trace chemicals are irrelevant unless in large amounts. D) Trace chemicals can be reported without documentation.
A) Forensic toxicology is like a translator between chemical evidence and legal interpretation B) Forensic toxicology is like a laboratory technician cleaning samples. C) Forensic toxicology is like a police interrogator asking questions. D) Forensic toxicology is like a detective mapping crime scenes.
A) Informing the media before law enforcement. B) Immediately reporting findings, preserving evidence, and documenting the analysis. C) Neutralizing the cyanide and discarding the sample. D) Conducting personal experiments to verify toxicity.
A) Maintaining a detailed chain of custody for samples. B) Recording results in an official laboratory report. C) Using validated analytical methods for controlled substances. D) Altering test results to fit the expected outcome.
A) Results should be accepted without documentation. B) Only visual observation is sufficient. C) Confidence is irrelevant; results are always taken as truth. D) Identification is based on reproducible analytical methods and peer-reviewed techniques.
A) Only checking if the color matches. B) Ignoring its potential effects because it’s a new compound. C) Comparing molecular structure, toxicity, and legal classification. D) Reporting the substance as legal if it is not listed in the old law
A) Residues are like fingerprints—they may link a suspect to a crime scene. B) Residues always prove guilt directly. C) Residues are only useful for academic studies. D) Residues are like dust, always irrelevant.
A) Should the victim be ignored if symptoms are mild? B) How can the concentration of the poison relate to the victim’s cause of death? C) Can the poison be replaced with another chemical for convenience? D) What is the cheapest method to detect the poison?
A) Proceed without concern for jurisdictional laws. B) Document the finding and consult legal authorities on jurisdiction-specific legislation. C) Report the substance as illegal everywhere. D) Ignore the legal classification and focus solely on chemistry
A) It ensures that evidence is analyzed quickly. B) It guarantees that evidence results are admissible and reliable in court. C) It allows multiple labs to change the sample freely. D) It only tracks the sample’s weight.
A) Listing the chemicals without relating to cause of death B) Only focusing on the chemical with the highest concentration C) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome D) Assuming all compounds were administered intentionally
A) Principle of individuality B) Principle of contamination control C) Locard’s exchange principle D) Chain of custody
A) Admissibility of expert opinion B) Scientific reliability of the method C) Authentication under Rules of Evidence D) Preservation of corpus delicti
A) Establishing a direct cause of death B) Determining the lethal dose of poison C) Identifying the antidote for ingestion D) Tracing drug metabolites in human urine
A) It constitutes a violation of procedural due process B) It renders the evidence inadmissible due to lack of authentication C) It affects the credibility but not admissibility of evidence D) It invalidates the chain of custody automatically
A) Substituting eyewitness testimony with expert interpretation B) Reconstructing crime scenes solely by chemical analysis C) Scientifically linking physical evidence to legal elements of a crime D) Establishing guilt beyond reasonable doubt through confession
A) To analyze chemical evidence to assist in legal investigations B) To teach chemistry to law enforcement personnel C) To develop new chemical compounds for industrial use D) To regulate the sale of chemicals to the public
A) Measuring the pH of a soil sample B) Determining the exact concentration of a drug in a blood sample C) Identifying the type of explosive used in a bombing D) Calculating the volume of a liquid found at a crime scene
A) The list of ingredients in a chemical compound B) The documented history of the handling and storage of evidence. The order in which witnesses are called to testify in court C) The sequence of chemical reactions used to identify a substance
A) Titration B) Polymerase Chain Reaction (PCR) C) Mass Spectrometry D) Distillation
A) To identify the source of a drug or poison B) To understand how different drugs interact with each other C) To determine the legal penalties for drug possession D) To assess the potential effects of a substance based on the amount present in the body
A) Only perform a confirmatory test without preliminary screening B) Immediately report it as blood based on color alone C) Ignore the stain because it might be from food D) Conduct preliminary color tests followed by confirmatory tests to verify the presence of blood
A) Preliminary tests are optional; confirmatory tests are enough B) They provide definitive identification without confirmatory analysis C) Preliminary tests alone are sufficient for legal reporting D) They allow rapid screening to prioritize samples while reducing risk of false positives
A) Only microscopic comparison without DNA testing B) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) C) Report the hair as human without further testing D) DNA analysis first, then discard microscopic examination
A) Relying solely on odor or visual appearance B) Only noting solubility in water C) Using GC-MS or IR spectroscopy after preliminary reagent tests D) Performing a simple colorimetric test only
A) Confirmatory tests are only for decorative purposes B) Preliminary tests are the final verdict; confirmatory tests are optional C) Preliminary tests are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object D) Preliminary tests and confirmatory tests are identical
A) Report it as linked to a victim immediately B) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis. C) Compare only color under a microscope D) Only perform chemical solubility tests
A) Preliminary tests can replace confirmatory tests for efficiency B) Validation is unnecessary for trace evidence C) Preliminary tests are always accurate and need no validation
A) Conclude it is human blood B) Discard the sample because preliminary tests are sufficient C) Conduct a confirmatory test such as Takayama or immunoassay to verify. D) Record the color reaction as the final result
A) Conducting GC-MS on suspected controlled substances B) Confirming trace fibers using micro-FTIR C) Reporting preliminary color test results as conclusive identification without confirmatory evidence. D) Using DNA testing to confirm human biological material
A) Immediately report it as a drug solution based on smell B) Rely solely on color to identify the substance C) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography D) Perform only a solubility test
A) Using only SEM-EDX for identification B) First performing chemical spot tests, then confirming with SEM-EDX particle analysis C) Relying on the victim’s testimony D) Only noting the firearm type at the scene
A) Both tests provide complementary information, reducing false positives and ensuring admissibility B) Trace evidence is rarely important in court C) Preliminary tests alone are sufficient for legal reporting D) Confirmatory tests are unnecessary if preliminary tests are positive
A) Ignore the stain because it may be paint B) Report the stain as blood based on color C) Use only a microscope to identify blood cells D) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory)
A) Confirmatory tests are like a referee confirming a goal after video replay B) Confirmatory tests are optional decorations in the laboratory C) Confirmatory tests are performed randomly for fun D) Confirmatory tests always replace preliminary tests
A) Only measure the paint thickness B) Assume the paint belongs to the suspect car without testing C) Compare only color to the suspect vehicle D) Conduct preliminary microscopic and chemical characterization, followed by confirmatory spectroscopy (FTIR or Raman)
A) Takayama crystal test B) Benzidine test C) ABAcard HemaTrace test D) Teichmann test
A) Thin Layer Chromatography (TLC) B) Colorimetric comparison test C) Ultraviolet spectroscopy D) Gas Chromatography-Mass Spectrometry (GC–MS)
A) Cuticle scale pattern analysis B) Microscopic pigmentation test C) Medullary index measurement D) Mitochondrial DNA analysis
A) The suspect handled explosives recently B) Exposure to organic solvents C) Gunpowder residue deposition D) Contact with agricultural fertilizer
A) Sensitivity B) Chain of custody C) Specificity limitation D) Reproducibility
A) Amylase test B) Saliva test C) Acid phosphatase test D) Microscopic examination for spermatozoa
A) Microscopic examination B) Thin Layer Chromatography (TLC) C) Melting point determination D) Gas Chromatography-Mass Spectrometry (GC-MS)
A) Burning test B) Microscopic examination of colour and texture C) Solubility test D) Infrared Spectroscopy
A) No, a negative presumptive test does not completely rule out the presence of blood; further testing may be required B) Yes, if the examiner is very sure about the result C) Maybe, depend on the experience of the examiner D) Yes, a negative presumptive test rules out the presence of blood
A) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) B) Griess test C) Sodium rhodizonate test D) Luminol test
A) Mix the blood with ethanol and store in a sealed container B) Wash the blood with distilled water and then freeze the residue C) Scrape the blood into a plastic bag and store at room temperature D) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope
A) Place the hair in a sealed plastic bag to prevent contamination B) Use tweezers to handle the hair and store it in a paper envelope C) Wash the hair before storage to remove potential contaminants D) A.Comb the clothing thoroughly with a metal comb
A) Freeze the fabric immediately without drying B) Wash the fabric in cold water to prevent bacterial growth C) Air dry the fabric and store in a breathable container D) Place the fabric in a plastic bag while still wet
A) Place directly in a sealed plastic bag B) Dissolve in water for transport C) Wrap in paper and store in a cool, dry place D) Mix with other drug samples to save space
A) Collect fibers using sticky tape and store in paper packets B) Sweep the area with a vacuum cleaner and store the dust in plastic bags C) Place all fibers in a single envelope regardless of source D) Freeze the fibers to preserve color
A) Use bare hands to pick fragments and store in plastic containers B) Sweep all glass fragments together in a plastic bag C) Use gloves and tweezers to collect each fragment, wrapping them in paper D) Dissolve the glass in acid to simplify storage
A) Measure the tool mark dimensions and discard the site evidence B) Make a silicone cast of the tool mark and send to lab C) Apply tape to lift the mark and store in a plastic bag D) Rub the tool mark with graphite to highlight it, then photograph
A) Combine evidence in one container to save time B) Collect evidence from different locations using separate tools and packaging C) Wash gloves between collections but reuse the same packaging D) Collect the largest item first, then smaller items
A) Collect wet blood with a sterile swab and air dry before packaging B) Immediately store blood in plastic and freeze C) Mix with ethanol and store in a sealed container D) Wash the blood to remove soil contaminants
A) Blood → Fibers → Glass → Drugs B) Fibers → Glass → Blood → Drugs C) Drugs → Glass → Fibers → Blood D) Glass → Blood → Drugs → Fibers
A) Wrap all items together in aluminum foil B) Plastic bags for all evidence C) Paper envelopes for biological evidence, separate from trace evidence D) Store wet evidence together in a single container
A) Remove evidence without documenting to save time B) Sketch the scene and label exact locations of all evidence collected C) Rely on memory for labeling evidence D) Only photograph the fiber sample
A) Hand it directly to a lab staff without documentation B) Combine it with other glass fragments from unrelated cases C) Record the date, time, and collector’s initials on the evidence label D) Store in an unmarked envelope to prevent tampering
A) Analyze only one type of evidence to save resources B) Perform drug testing first since it is faster C) Split the sample: prioritize blood DNA extraction first, then drug analysis D) Mix the sample with preservatives and store for future analysis
A) B.Cut gloves into pieces and place in separate plastic bags B) Collect gloves as a whole, air dry, and store in paper bags C) C.Wash gloves to extract evidence, then store D) Remove fibers only and discard the gloves
A) Sealing in an airtight plastic bag immediately B) Allowing the sample to air-dry before packaging C) Scraping it into a paper envelope while wet D) Using a wet swab directly on the stain
A) In a plastic bag with silica gel B) On adhesive tape sealed in a paper bindle C) In a wet swab container D) In cotton padding inside a sealed glass tube
A) It fulfills chain of custody requirements B) It ensures sample representativeness C) It prevents chemical degradation D) It confirms the evidence’s scientific validity
A) Immerse in ethanol solution B) Place in plastic ziplock C) Air-dry and package in paper bag D) Freeze immediately after collection
A) Chemical reaction with glass B) Static charge contamination C) Trace transfer or breakage D) DNA degradation
A) Scrape the sample into a paper envelope while still wet B) Allow the sample to air-dry completely before packaging C) Collect the sample with a wet swab D) Seal the sample in an airtight plastic bag immediately
A) Place the hair in a wet swab container B) Store the hair in a plastic bag with silica gel C) Enclose the hair in cotton padding inside a sealed glass tube D) Affix the hair to adhesive tape, then seal the tape in a paper bindle
A) To ensure the sample is representative of the whole B) To prevent chemical degradation of the sample C) To confirm the evidence's scientific validity D) To fulfil chain of custody requirements
A) Pour the liquid directly into a plastic container B) Using a sterile cotton swab, air dry, and package in a paper envelope. B. Collect with a wet swab and seal in a plastic bag C) Leave it at the scene to avoid contamination D) Using a sterile cotton swab, air dry, and package in a paper envelope
A) Clean it thoroughly to remove fingerprints B) Disassemble it to prevent accidental discharge C) Place it in a plastic bag to protect it from scratches D) Secure it in a cardboard box, noting the position of the safety and any cartridges remaining in the chamber
A) Chemical; organophosphate B) Biological; viral toxin C) Biological; bacterial toxin D) Chemical; heavy meta
A) Atropine, Hydroxocobalamin B) Naloxone C) Vitamin K
A) Chemical poisons like arsenic affect metabolic enzymes directly B) Both act by enzymatic inhibition C) Biological poisons require ingestion to be effective D) Biological poisons generally act faster than chemical
A) Chemical; antidote administration B) Biological; supportive care C) Biological; induced vomiting D) Chemical; chelation
A) Both require enzymatic activation to exert effects B) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission C) Both produce immediate CNS depression D) Both are neutralized by the same antidote
A) Both act by the same mechanism B) Botulinum toxin has a lower lethal dose and acts via neuroinhibition C) Cyanide requires enzymatic activation D) Cyanide is more potent than botulinum toxin
A) Administer fomepizole to inhibit metabolism B) Administer atropine C) Only provide intravenous fluids D) Use hydroxocobalamin as first-line
A) Biological poisons cannot be fatal B) Chemical poisons are only synthetic C) Both arise exclusively from natural sources D) Biological poisons can originate from bacteria like Clostridium
A) Mercury is neutralized by antibiotics B) Mercury is a biological poison that inhibits acetylcholinesterase C) Mercury acts by producing neurotoxins like botulinum D) Mercury is a chemical poison causing enzyme inactivation and renal damage
A) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery B) Both inhibit cellular respiration directly C) Both are treated with the same antidotes D) CO is less toxic than ricin in all doses
A) Measure serum cholinesterase levels B) Administer empiric antibiotics C) Culture for Clostridium botulinum D) Only rely on clinical symptoms
A) Fomepizole B) Atropine C) Hydroxocobalamin D) Vitamin K
A) Protein toxins diffuse faster than lipid-soluble chemicals B) Both are eliminated through renal excretion only C) Both cross cell membranes equally D) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake
A) Determine method of administration and onset of action B) Assume similar onset due to rapid toxicity C) Use a single antidote for both cases D) Only focus on symptoms for legal evidence
A) Biological poisons are unaffected by treatment timing B) Delayed treatment always has no effect C) Early antidote administration in chemical poisoning significantly improves prognosis D) Both outcomes are identical regardless of treatment
A) Neuromuscular transmission B) Red blood cell oxygen transport C) Enzymatic oxidation in mitochondria D) Synaptic acetylcholine degradation
A) Dimercaprol B) Pralidoxime C) Naloxone D) Atropine
A) Mode of administration B) Target organ specificity C) Detectability through spectroscopy D) Source of origin
A) Lassaigne’s test B) Duquenois-Levine test C) Reinsch test D) Marsh test
A) Have no specific antidotes B) May act rapidly with quantifiable doses C) Cause immunological reactions D) Exhibit cumulative effects through metabolism
A) Only chemical poisons require laboratory confirmation; biological poisons are assumed from symptoms B) Legal relevance is restricted to chemical poisons; biological toxins are not admissible C) Treat both cases identically because both are toxic D) Analyze the mechanism of action, onset, and specific antidotes for each poison to guide both treatment and legal interpretation
A) All poisons are treated with the same antidotes regardless of type B) Antidote selection depends on the poison’s nature, mechanism, and biological target C) Only chemical poisons are relevant in legal proceedings D) Biological poisons never require antidotes
A) Biological and chemical poisons differ in structure, action, and detection, so each must be assessed independently B) Only chemical poisons can be used as evidence in court C) All toxins are equivalent for forensic reporting D) Court testimony does not require distinction between toxin types
A) Laboratory confirmation is optional for chemical poisons B) Only qualitative observations are required for biological poisons C) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification D) Use identical chemical assays for both poisons
A) Symptom similarity is sufficient for both types; mechanism is irrelevant B) Only chemical poisoning requires symptom analysis for evidence purposes C) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions D) Biological poisons are inherently less relevant to forensic investigation |