A) A.Reporting the result to the police only. B) Administering treatment to the victim. C) Documenting the result and preserving the sample for court evidence. D) Immediately publishing the findings in a scientific journal.
A) To identify the color and odor characteristics. B) A.To identify the toxic effect. C) To determine the source and legal admissibility of the evidence D) C.To calculate the concentration of the chemical.
A) Cross-reference the substance with controlled substances schedules. B) Only notify the laboratory manager. C) A.Conduct the test and discard the sample. D) C.Test only for lethal chemicals.
A) A.Using the cheapest and fastest analytical method. B) Following validated protocols and maintaining chain of custody C) Allowing multiple technicians to randomly alter procedures. D) C.Testing only for common poisons.
A) A.Trace chemicals prove guilt without further context. B) C.Trace chemicals are irrelevant unless in large amounts. C) Trace chemicals can be reported without documentation. D) Trace chemicals may suggest exposure but must be corroborated with other evidence.
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) 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) Recording results in an official laboratory report. B) A.Maintaining a detailed chain of custody for samples. C) Altering test results to fit the expected outcome. D) B.Using validated analytical methods for controlled substances.
A) Identification is based on reproducible analytical methods and peer-reviewed techniques. B) C.Only visual observation is sufficient. C) A.Confidence is irrelevant; results are always taken as truth. D) Results should be accepted without documentation.
A) Only checking if the color matches. 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) Comparing molecular structure, toxicity, and legal classification.
A) C.Residues always prove guilt directly. B) Residues are only useful for academic studies. C) Residues are like fingerprints—they may link a suspect to a crime scene. D) B.Residues are like dust, always irrelevant.
A) Can the poison be replaced with another chemical for convenience? B) C.Should the victim be ignored if symptoms are mild? C) How can the concentration of the poison relate to the victim’s cause of death? D) B.What is the cheapest method to detect the poison?
A) A.Proceed without concern for jurisdictional laws. B) Document the finding and consult legal authorities on jurisdiction-specific legislation. 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) A.It ensures that evidence is analyzed quickly. C) It guarantees that evidence results are admissible and reliable in court. D) It allows multiple labs to change the sample freely.
A) Assuming all compounds were administered intentionally B) Only focusing on the chemical with the highest concentration C) Listing the chemicals without relating to cause of death D) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome
A) Chain of custody B) Locard’s exchange principle C) Principle of individuality 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) Tracing drug metabolites in human urine B) Determining the lethal dose of poison C) Identifying the antidote for ingestion D) Establishing a direct cause of death
A) It renders the evidence inadmissible due to lack of authentication B) It affects the credibility but not admissibility of evidence C) It invalidates the chain of custody automatically D) It constitutes a violation of procedural due process
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 regulate the sale of chemicals to the public B) To teach chemistry to law enforcement personnel C) To analyze chemical evidence to assist in legal investigations D) To develop new chemical compounds for industrial use
A) Identifying the type of explosive used in a bombing B) Calculating the volume of a liquid found at a crime scene C) Measuring the pH of a soil sample D) Determining the exact concentration of a drug in a blood 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) Titration B) Mass Spectrometry C) Distillation D) Polymerase Chain Reaction (PCR)
A) To determine the legal penalties for drug possession B) To identify the source of a drug or poison C) To understand how different drugs interact with each other D) To assess the potential effects of a substance based on the amount present in the body
A) Immediately report it as blood based on color alone 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) 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) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) B) Report the hair as human without further testing C) DNA analysis first, then discard microscopic examination D) Only microscopic comparison without DNA testing
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 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 are the final verdict; confirmatory tests are optional D) Preliminary tests and confirmatory tests are identical
A) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis. B) Only perform chemical solubility tests C) Compare only color under a microscope 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) Record the color reaction as the final result B) Conclude it is human blood C) Discard the sample because preliminary tests are sufficient D) Conduct a confirmatory test such as Takayama or immunoassay to verify.
A) Confirming trace fibers using micro-FTIR B) Using DNA testing to confirm human biological material C) Conducting GC-MS on suspected controlled substances D) Reporting preliminary color test results as conclusive identification without confirmatory evidence.
A) Rely solely on color to identify the substance B) Immediately report it as a drug solution based on smell 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) Only noting the firearm type at the scene C) Relying on the victim’s testimony 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) Preliminary tests alone are sufficient for legal reporting C) Confirmatory tests are unnecessary if preliminary tests are positive D) Trace evidence is rarely important in court
A) Ignore the stain because it may be paint B) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) C) Use only a microscope to identify blood cells 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) 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) Colorimetric comparison test B) Ultraviolet spectroscopy C) Thin Layer Chromatography (TLC) 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) The suspect handled explosives recently C) Gunpowder residue deposition D) Contact with agricultural fertilizer
A) Sensitivity B) Chain of custody C) Reproducibility D) Specificity limitation
A) Saliva test B) Amylase test C) Acid phosphatase test D) Microscopic examination for spermatozoa
A) Melting point determination B) Gas Chromatography-Mass Spectrometry (GC-MS) C) Microscopic examination D) Thin Layer Chromatography (TLC)
A) Burning test B) Microscopic examination of colour and texture C) Infrared Spectroscopy D) Solubility test
A) Yes, if the examiner is very sure about the result 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, a negative presumptive test rules out the presence of blood
A) Luminol test B) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) C) Sodium rhodizonate test D) Griess test
A) Scrape the blood into a plastic bag and store at room temperature B) Wash the blood with distilled water and then freeze the residue C) Mix the blood with ethanol and store in a sealed container D) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope
A) Use tweezers to handle the hair and store it in a paper envelope B) Wash the hair before storage to remove potential contaminants C) A.Comb the clothing thoroughly with a metal comb D) Place the hair in a sealed plastic bag to prevent contamination
A) Place the fabric in a plastic bag while still wet B) Wash the fabric in cold water to prevent bacterial growth C) Freeze the fabric immediately without drying D) Air dry the fabric and store in a breathable container
A) Place directly in a sealed plastic bag B) Wrap in paper and store in a cool, dry place C) Mix with other drug samples to save space D) Dissolve in water for transport
A) Sweep the area with a vacuum cleaner and store the dust in plastic bags B) Collect fibers using sticky tape and store in paper packets C) Freeze the fibers to preserve color D) Place all fibers in a single envelope regardless of source
A) Sweep all glass fragments together in a plastic bag B) Dissolve the glass in acid to simplify storage C) Use gloves and tweezers to collect each fragment, wrapping them in paper D) Use bare hands to pick fragments and store in plastic containers
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) Wash gloves between collections but reuse the same packaging B) Collect evidence from different locations using separate tools and packaging C) Collect the largest item first, then smaller items D) Combine evidence in one container to save time
A) Immediately store blood in plastic and freeze B) Wash the blood to remove soil contaminants C) Mix with ethanol and store in a sealed container D) Collect wet blood with a sterile swab and air dry before packaging
A) Drugs → Glass → Fibers → Blood B) Fibers → Glass → Blood → Drugs C) Blood → Fibers → Glass → Drugs D) Glass → Blood → Drugs → Fibers
A) Store wet evidence together in a single container B) Plastic bags for all evidence C) Paper envelopes for biological evidence, separate from trace evidence D) Wrap all items together in aluminum foil
A) Only photograph the fiber sample B) Rely on memory for labeling evidence C) Sketch the scene and label exact locations of all evidence collected D) Remove evidence without documenting to save time
A) Record the date, time, and collector’s initials on the evidence label B) Store in an unmarked envelope to prevent tampering C) Hand it directly to a lab staff without documentation D) Combine it with other glass fragments from unrelated cases
A) Perform drug testing first since it is faster B) Split the sample: prioritize blood DNA extraction first, then drug analysis C) Mix the sample with preservatives and store for future analysis D) Analyze only one type of evidence to save resources
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) Scraping it into a paper envelope while wet D) Sealing in an airtight plastic bag immediately
A) In a plastic bag with silica gel B) On adhesive tape sealed in a paper bindle C) In cotton padding inside a sealed glass tube D) In a wet swab container
A) It confirms the evidence’s scientific validity B) It fulfills chain of custody requirements C) It ensures sample representativeness D) It prevents chemical degradation
A) Air-dry and package in paper bag B) Place in plastic ziplock C) Freeze immediately after collection D) Immerse in ethanol solution
A) Static charge contamination B) Trace transfer or breakage C) DNA degradation D) Chemical reaction with glass
A) Scrape the sample into a paper envelope while still wet B) Seal the sample in an airtight plastic bag immediately C) Collect the sample with a wet swab D) Allow the sample to air-dry completely before packaging
A) Store the hair in a plastic bag with silica gel B) Affix the hair to adhesive tape, then seal the tape in a paper bindle C) Enclose the hair in cotton padding inside a sealed glass tube D) Place the hair in a wet swab container
A) To prevent chemical degradation of the sample B) To fulfil chain of custody requirements C) To confirm the evidence's scientific validity D) To ensure the sample is representative of the whole
A) Leave it at the scene to avoid contamination 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) Pour the liquid directly into a plastic container
A) Disassemble it to prevent accidental discharge B) Place it in a plastic bag to protect it from scratches C) Secure it in a cardboard box, noting the position of the safety and any cartridges remaining in the chamber D) Clean it thoroughly to remove fingerprints
A) Biological; viral toxin B) Chemical; heavy meta C) Chemical; organophosphate D) Biological; bacterial toxin
A) Naloxone B) Atropine, Hydroxocobalamin C) Vitamin K
A) Biological poisons require ingestion to be effective B) Both act by enzymatic inhibition C) Biological poisons generally act faster than chemical D) Chemical poisons like arsenic affect metabolic enzymes directly
A) Biological; induced vomiting B) Biological; supportive care C) Chemical; chelation D) Chemical; antidote administration
A) Both require enzymatic activation to exert effects B) Both are neutralized by the same antidote C) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission D) Both produce immediate CNS depression
A) Cyanide requires enzymatic activation B) Cyanide is more potent than botulinum toxin C) Both act by the same mechanism D) Botulinum toxin has a lower lethal dose and acts via neuroinhibition
A) Administer fomepizole to inhibit metabolism B) Only provide intravenous fluids C) B.Use hydroxocobalamin as first-line D) Administer atropine
A) Biological poisons cannot be fatal B) Biological poisons can originate from bacteria like Clostridium C) Chemical poisons are only synthetic D) Both arise exclusively from natural sources
A) C.Mercury is neutralized by antibiotics B) Mercury is a chemical poison causing enzyme inactivation and renal damage C) Mercury is a biological poison that inhibits acetylcholinesterase D) Mercury acts by producing neurotoxins like botulinum
A) Both are treated with the same antidotes B) CO is less toxic than ricin in all doses C) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery D) Both inhibit cellular respiration directly
A) Culture for Clostridium botulinum B) Administer empiric antibiotics C) Measure serum cholinesterase levels D) Only rely on clinical symptoms
A) Atropine B) Hydroxocobalamin C) Vitamin K D) Fomepizole
A) Protein toxins diffuse faster than lipid-soluble chemicals B) Both are eliminated through renal excretion only C) Both cross cell membranes equally D) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake
A) Use a single antidote for both cases B) Determine method of administration and onset of action C) Assume similar onset due to rapid toxicity D) Only focus on symptoms for legal evidence
A) Early antidote administration in chemical poisoning significantly improves prognosis B) Biological poisons are unaffected by treatment timing C) C.Both outcomes are identical regardless of treatment D) Delayed treatment always has no effect
A) Enzymatic oxidation in mitochondria B) Red blood cell oxygen transport C) Synaptic acetylcholine degradation D) Neuromuscular transmission
A) Dimercaprol B) Pralidoxime C) Atropine D) Naloxone
A) Source of origin B) Mode of administration C) Target organ specificity D) Detectability through spectroscopy
A) Reinsch test B) Marsh test C) Lassaigne’s test D) Duquenois-Levine test
A) May act rapidly with quantifiable doses B) Exhibit cumulative effects through metabolism C) Cause immunological reactions D) Have no specific antidotes
A) Treat both cases identically because both are toxic 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) 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) Only chemical poisons are relevant in legal proceedings C) Antidote selection depends on the poison’s nature, mechanism, and biological target D) All poisons are treated with the same antidotes regardless of type
A) Court testimony does not require distinction between toxin types B) Only chemical poisons can be used as evidence in court C) All toxins are equivalent for forensic reporting D) Biological and chemical poisons differ in structure, action, and detection, so each must be assessed independently
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) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions B) Only chemical poisoning requires symptom analysis for evidence purposes C) Symptom similarity is sufficient for both types; mechanism is irrelevant D) Biological poisons are inherently less relevant to forensic investigation |