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