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