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