A) Immediately publishing the findings in a scientific journal. B) A.Reporting the result to the police only. C) Documenting the result and preserving the sample for court evidence. D) Administering treatment to the victim.
A) A.To identify the toxic effect. B) To determine the source and legal admissibility of the evidence C) C.To calculate the concentration of the chemical. 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) Allowing multiple technicians to randomly alter procedures. C) A.Using the cheapest and fastest analytical method. D) Following validated protocols and maintaining chain of custody
A) C.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) 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 laboratory technician cleaning samples. D) Forensic toxicology is like a police interrogator asking questions.
A) Conducting personal experiments to verify toxicity. B) Immediately reporting findings, preserving evidence, and documenting the analysis. C) C.Informing the media before law enforcement. D) Neutralizing the cyanide and discarding the sample.
A) Altering test results to fit the expected outcome. B) B.Using validated analytical methods for controlled substances. 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) Results should be accepted without documentation. D) C.Only visual observation is sufficient.
A) Reporting the substance as legal if it is not listed in the old law B) Comparing molecular structure, toxicity, and legal classification. C) Only checking if the color matches. D) Ignoring its potential effects because it’s a new compound.
A) C.Residues always prove guilt directly. B) 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) 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) Document the finding and consult legal authorities on jurisdiction-specific legislation. B) Ignore the legal classification and focus solely on chemistry C) C.Report the substance as illegal everywhere. 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) Only focusing on the chemical with the highest concentration B) Listing the chemicals without relating to cause of death C) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome 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) Admissibility of expert opinion B) Scientific reliability of the method C) Authentication under Rules of Evidence D) Preservation of corpus delicti
A) Establishing a direct cause of death B) Determining the lethal dose of poison C) Tracing drug metabolites in human urine D) Identifying the antidote for ingestion
A) It constitutes a violation of procedural due process B) It affects the credibility but not admissibility of evidence C) It invalidates the chain of custody automatically D) It renders the evidence inadmissible due to lack of authentication
A) Reconstructing crime scenes solely by chemical analysis B) Establishing guilt beyond reasonable doubt through confession C) Scientifically linking physical evidence to legal elements of a crime D) Substituting eyewitness testimony with expert interpretation
A) To regulate the sale of chemicals to the public B) To develop new chemical compounds for industrial use C) To analyze chemical evidence to assist in legal investigations D) To teach chemistry to law enforcement personnel
A) Calculating the volume of a liquid found at a crime scene B) Identifying the type of explosive used in a bombing C) Determining the exact concentration of a drug in a blood sample D) Measuring the pH of a soil 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) Distillation C) Titration D) Mass Spectrometry
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 understand how different drugs interact with each other D) To identify the source of a drug or poison
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) Preliminary tests alone are sufficient for legal reporting B) They allow rapid screening to prioritize samples while reducing risk of false positives C) Preliminary tests are optional; confirmatory tests are enough D) They provide definitive identification without confirmatory analysis
A) DNA analysis first, then discard microscopic examination B) Report the hair as human without further testing C) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) D) Only microscopic comparison without DNA testing
A) Only noting solubility in water B) Performing a simple colorimetric test only C) Relying solely on odor or visual appearance D) Using GC-MS or IR spectroscopy after preliminary reagent tests
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 and confirmatory tests are identical 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) Only perform chemical solubility tests D) Report it as linked to a victim immediately
A) Preliminary tests are always accurate and need no validation B) Preliminary tests can replace confirmatory tests for efficiency C) Validation is unnecessary for trace evidence
A) Conclude it is human blood B) Record the color reaction as the final result C) Discard the sample because preliminary tests are sufficient D) Conduct a confirmatory test such as Takayama or immunoassay to verify.
A) Conducting GC-MS on suspected controlled substances B) Reporting preliminary color test results as conclusive identification without confirmatory evidence. C) Confirming trace fibers using micro-FTIR 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) Perform only a solubility test D) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography
A) Using only SEM-EDX for identification B) First performing chemical spot tests, then confirming with SEM-EDX particle analysis C) Relying on the victim’s testimony D) Only noting the firearm type at the scene
A) Trace evidence is rarely important in court B) Preliminary tests alone are sufficient for legal reporting C) Both tests provide complementary information, reducing false positives and ensuring admissibility D) Confirmatory tests are unnecessary if preliminary tests are positive
A) Ignore the stain because it may be paint B) Use only a microscope to identify blood cells C) Report the stain as blood based on color D) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory)
A) Confirmatory tests are performed randomly for fun B) Confirmatory tests are like a referee confirming a goal after video replay C) Confirmatory tests always replace preliminary tests D) Confirmatory tests are optional decorations in the laboratory
A) Assume the paint belongs to the suspect car without testing B) Conduct preliminary microscopic and chemical characterization, followed by confirmatory spectroscopy (FTIR or Raman) C) Compare only color to the suspect vehicle D) Only measure the paint thickness
A) ABAcard HemaTrace test B) Benzidine test C) Teichmann test D) Takayama crystal test
A) Ultraviolet spectroscopy B) Thin Layer Chromatography (TLC) C) Gas Chromatography-Mass Spectrometry (GC–MS) D) Colorimetric comparison test
A) Medullary index measurement B) Cuticle scale pattern analysis C) Mitochondrial DNA analysis D) Microscopic pigmentation test
A) The suspect handled explosives recently B) Gunpowder residue deposition C) Contact with agricultural fertilizer D) Exposure to organic solvents
A) Specificity limitation B) Chain of custody C) Reproducibility D) Sensitivity
A) Acid phosphatase test B) Amylase test C) Microscopic examination for spermatozoa D) Saliva test
A) Gas Chromatography-Mass Spectrometry (GC-MS) B) Melting point determination C) Microscopic examination D) Thin Layer Chromatography (TLC)
A) Microscopic examination of colour and texture B) Burning test C) Infrared Spectroscopy D) Solubility test
A) Yes, if the examiner is very sure about the result B) Yes, a negative presumptive test rules out the presence of blood C) No, a negative presumptive test does not completely rule out the presence of blood; further testing may be required D) Maybe, depend on the experience of the examiner
A) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) B) Sodium rhodizonate test C) Luminol test D) Griess test
A) Scrape the blood into a plastic bag and store at room temperature B) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope C) Wash the blood with distilled water and then freeze the residue D) Mix the blood with ethanol and store in a sealed container
A) Place the hair in a sealed plastic bag to prevent contamination B) A.Comb the clothing thoroughly with a metal comb 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) Wash the fabric in cold water to prevent bacterial growth B) Air dry the fabric and store in a breathable container C) Freeze the fabric immediately without drying D) Place the fabric in a plastic bag while still wet
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) 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 gloves and tweezers to collect each fragment, wrapping them in paper C) Use bare hands to pick fragments and store in plastic containers D) Dissolve the glass in acid to simplify storage
A) Rub the tool mark with graphite to highlight it, then photograph B) Apply tape to lift the mark and store in a plastic bag C) Make a silicone cast of the tool mark and send to lab D) Measure the tool mark dimensions and discard the site evidence
A) Combine evidence in one container to save time B) Collect the largest item first, then smaller items C) Collect evidence from different locations using separate tools and packaging D) Wash gloves between collections but reuse the same packaging
A) Mix with ethanol and store in a sealed container B) Immediately store blood in plastic and freeze C) Wash the blood to remove soil contaminants D) Collect wet blood with a sterile swab and air dry before packaging
A) Blood → Fibers → Glass → Drugs B) Fibers → Glass → Blood → Drugs C) Glass → Blood → Drugs → Fibers 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) Rely on memory for labeling evidence B) Only photograph the fiber sample C) Remove evidence without documenting to save time D) Sketch the scene and label exact locations of all evidence collected
A) Combine it with other glass fragments from unrelated cases B) Store in an unmarked envelope to prevent tampering C) Record the date, time, and collector’s initials on the evidence label D) Hand it directly to a lab staff without documentation
A) Split the sample: prioritize blood DNA extraction first, then drug analysis B) Mix the sample with preservatives and store for future analysis C) Analyze only one type of evidence to save resources D) Perform drug testing first since it is faster
A) C.Wash gloves to extract evidence, then store B) Remove fibers only and discard the gloves C) B.Cut gloves into pieces and place in separate plastic bags D) Collect gloves as a whole, air dry, and store in paper bags
A) Using a wet swab directly on the stain B) Allowing the sample to air-dry before packaging C) Scraping it into a paper envelope while wet D) Sealing in an airtight plastic bag immediately
A) In a wet swab container B) In cotton padding inside a sealed glass tube C) On adhesive tape sealed in a paper bindle D) In a plastic bag with silica gel
A) It ensures sample representativeness B) It fulfills chain of custody requirements C) It prevents chemical degradation D) It confirms the evidence’s scientific validity
A) Immerse in ethanol solution B) Place in plastic ziplock C) Freeze immediately after collection D) Air-dry and package in paper bag
A) Chemical reaction with glass B) Static charge contamination C) DNA degradation D) Trace transfer or breakage
A) Scrape the sample into a paper envelope while still wet B) Allow the sample to air-dry completely before packaging 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 confirm the evidence's scientific validity B) To ensure the sample is representative of the whole C) To fulfil chain of custody requirements 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) Leave it at the scene to avoid contamination C) Using a sterile cotton swab, air dry, and package in a paper envelope D) Pour the liquid directly into a plastic container
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) Biological; viral toxin B) Chemical; heavy meta C) Chemical; organophosphate D) Biological; bacterial toxin
A) Atropine, Hydroxocobalamin B) Vitamin K 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) Biological; induced vomiting B) Chemical; chelation C) Biological; supportive care D) Chemical; antidote administration
A) Both require enzymatic activation to exert effects B) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission C) Both are neutralized by the same antidote D) Both produce immediate CNS depression
A) Both act by the same mechanism B) Cyanide requires enzymatic activation C) Cyanide is more potent than botulinum toxin D) Botulinum toxin has a lower lethal dose and acts via neuroinhibition
A) Administer atropine B) Only provide intravenous fluids C) B.Use hydroxocobalamin as first-line D) Administer fomepizole to inhibit metabolism
A) Biological poisons cannot be fatal B) Both arise exclusively from natural sources C) Chemical poisons are only synthetic D) Biological poisons can originate from bacteria like Clostridium
A) Mercury is a chemical poison causing enzyme inactivation and renal damage B) Mercury acts by producing neurotoxins like botulinum 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) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery C) CO is less toxic than ricin in all doses D) Both inhibit cellular respiration directly
A) Only rely on clinical symptoms B) Culture for Clostridium botulinum C) Administer empiric antibiotics D) Measure serum cholinesterase levels
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 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) C.Both outcomes are identical regardless of treatment C) Delayed treatment always has no effect D) Biological poisons are unaffected by treatment timing
A) Synaptic acetylcholine degradation B) Neuromuscular transmission C) Red blood cell oxygen transport D) Enzymatic oxidation in mitochondria
A) Naloxone B) Atropine C) Dimercaprol D) Pralidoxime
A) Target organ specificity B) Detectability through spectroscopy C) Source of origin D) Mode of administration
A) Marsh test B) Lassaigne’s test C) Duquenois-Levine test D) Reinsch test
A) Cause immunological reactions B) Exhibit cumulative effects through metabolism C) May act rapidly with quantifiable doses D) Have no specific antidotes
A) Treat both cases identically because both are toxic B) Analyze the mechanism of action, onset, and specific antidotes for each poison to guide both treatment and legal interpretation C) Only chemical poisons require laboratory confirmation; biological poisons are assumed from symptoms D) Legal relevance is restricted to chemical poisons; biological toxins are not admissible
A) Biological poisons never require antidotes B) All poisons are treated with the same antidotes regardless of type C) Antidote selection depends on the poison’s nature, mechanism, and biological target D) Only chemical poisons are relevant in legal proceedings
A) Court testimony does not require distinction between toxin types 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) Only chemical poisons can be used as evidence in court
A) Use identical chemical assays for both poisons B) Only qualitative observations are required for biological poisons C) Laboratory confirmation is optional for chemical poisons D) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification
A) Biological poisons are inherently less relevant to forensic investigation B) Symptom similarity is sufficient for both types; mechanism is irrelevant 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 |