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