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