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