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