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) Cross-reference the substance with controlled substances schedules. D) A.Conduct the test and discard the sample.
A) Following validated protocols and maintaining chain of custody B) A.Using the cheapest and fastest analytical method. C) C.Testing only for common poisons. D) Allowing multiple technicians to randomly alter procedures.
A) Trace chemicals may suggest exposure but must be corroborated with other evidence. B) Trace chemicals can be reported without documentation. C) C.Trace chemicals are irrelevant unless in large amounts. D) A.Trace chemicals prove guilt without further context.
A) Forensic toxicology is like a translator between chemical evidence and legal interpretation B) A.Forensic toxicology is like a detective mapping crime scenes. C) Forensic toxicology is like a laboratory technician cleaning samples. D) Forensic toxicology is like a police interrogator asking questions.
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) A.Maintaining a detailed chain of custody for samples. B) B.Using validated analytical methods for controlled substances. C) Altering test results to fit the expected outcome. D) Recording results in an official laboratory report.
A) C.Only visual observation is sufficient. B) Results should be accepted without documentation. C) Identification is based on reproducible analytical methods and peer-reviewed techniques. D) A.Confidence is irrelevant; results are always taken as truth.
A) Reporting the substance as legal if it is not listed in the old law B) Comparing molecular structure, toxicity, and legal classification. C) Ignoring its potential effects because it’s a new compound. D) Only checking if the color matches.
A) C.Residues always prove guilt directly. B) Residues are only useful for academic studies. C) B.Residues are like dust, always irrelevant. D) Residues are like fingerprints—they may link a suspect to a crime scene.
A) C.Should the victim be ignored if symptoms are mild? B) How can the concentration of the poison relate to the victim’s cause of death? C) B.What is the cheapest method to detect the poison? D) Can the poison be replaced with another chemical for convenience?
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) It allows multiple labs to change the sample freely. C) It guarantees that evidence results are admissible and reliable in court. D) A.It ensures that evidence is analyzed quickly.
A) Listing the chemicals without relating to cause of death B) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome C) Only focusing on the chemical with the highest concentration D) Assuming all compounds were administered intentionally
A) Principle of contamination control B) Chain of custody C) Principle of individuality D) Locard’s exchange principle
A) Authentication under Rules of Evidence B) Admissibility of expert opinion C) Preservation of corpus delicti D) Scientific reliability of the method
A) Establishing a direct cause of death B) Determining the lethal dose of poison C) Identifying the antidote for ingestion 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 renders the evidence inadmissible due to lack of authentication D) It constitutes a violation of procedural due process
A) Reconstructing crime scenes solely by chemical analysis B) Establishing guilt beyond reasonable doubt through confession C) Substituting eyewitness testimony with expert interpretation D) Scientifically linking physical evidence to legal elements of a crime
A) To analyze chemical evidence to assist in legal investigations B) To teach chemistry to law enforcement personnel C) To regulate the sale of chemicals to the public D) To develop new chemical compounds for industrial use
A) Measuring the pH of a soil sample B) Identifying the type of explosive used in a bombing C) Calculating the volume of a liquid found at a crime scene 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) Distillation B) Mass Spectrometry C) Titration D) Polymerase Chain Reaction (PCR)
A) To assess the potential effects of a substance based on the amount present in the body B) To identify the source of a drug or poison C) To understand how different drugs interact with each other D) To determine the legal penalties for drug possession
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) Immediately report it as blood based on color alone D) Ignore the stain because it might be from food
A) Preliminary tests alone are sufficient for legal reporting B) They provide definitive identification without confirmatory analysis C) They allow rapid screening to prioritize samples while reducing risk of false positives D) Preliminary tests are optional; confirmatory tests are enough
A) Only microscopic comparison without DNA testing B) Report the hair as human without further 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) Confirmatory tests are only for decorative purposes C) Preliminary tests are the final verdict; confirmatory tests are optional D) Preliminary tests are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object
A) Report it as linked to a victim immediately B) Compare only color under a microscope C) Only perform chemical solubility tests D) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis.
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) Discard the sample because preliminary tests are sufficient C) Conduct a confirmatory test such as Takayama or immunoassay to verify. D) Conclude it is human blood
A) Using DNA testing to confirm human biological material B) Confirming trace fibers using micro-FTIR 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) Perform only a solubility test 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) First performing chemical spot tests, then confirming with SEM-EDX particle analysis B) Using only SEM-EDX for identification 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) Confirmatory tests are unnecessary if preliminary tests are positive D) Both tests provide complementary information, reducing false positives and ensuring admissibility
A) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) B) Use only a microscope to identify blood cells C) Report the stain as blood based on color D) Ignore the stain because it may be paint
A) Confirmatory tests are optional decorations in the laboratory B) Confirmatory tests are like a referee confirming a goal after video replay C) Confirmatory tests always replace preliminary tests D) Confirmatory tests are performed randomly for fun
A) Assume the paint belongs to the suspect car without testing B) Compare only color to the suspect vehicle C) Only measure the paint thickness D) Conduct preliminary microscopic and chemical characterization, followed by confirmatory spectroscopy (FTIR or Raman)
A) Takayama crystal test B) Benzidine test C) ABAcard HemaTrace test D) Teichmann test
A) Ultraviolet spectroscopy B) Gas Chromatography-Mass Spectrometry (GC–MS) C) Thin Layer Chromatography (TLC) D) Colorimetric comparison test
A) Medullary index measurement B) Microscopic pigmentation test C) Mitochondrial DNA analysis D) Cuticle scale pattern analysis
A) Exposure to organic solvents B) The suspect handled explosives recently C) Contact with agricultural fertilizer D) Gunpowder residue deposition
A) Sensitivity B) Reproducibility C) Chain of custody D) Specificity limitation
A) Saliva test B) Microscopic examination for spermatozoa C) Acid phosphatase test D) Amylase test
A) Gas Chromatography-Mass Spectrometry (GC-MS) B) Melting point determination 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) Sodium rhodizonate test C) Griess test D) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS)
A) Wash the blood with distilled water and then freeze the residue B) Mix the blood with ethanol and store in a sealed container C) Scrape the blood into a plastic bag and store at room temperature D) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope
A) Wash the hair before storage to remove potential contaminants B) A.Comb the clothing thoroughly with a metal comb C) Place the hair in a sealed plastic bag to prevent contamination D) Use tweezers to handle the hair and store it in a paper envelope
A) Freeze the fabric immediately without drying B) Wash the fabric in cold water to prevent bacterial growth C) Air dry the fabric and store in a breathable container D) Place the fabric in a plastic bag while still wet
A) Wrap in paper and store in a cool, dry place B) Dissolve in water for transport C) Mix with other drug samples to save space D) Place directly in a sealed plastic bag
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) 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) 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) Measure the tool mark dimensions and discard the site evidence D) Rub the tool mark with graphite to highlight it, then photograph
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) 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) Glass → Blood → Drugs → Fibers B) Blood → Fibers → Glass → Drugs C) Drugs → Glass → Fibers → Blood D) Fibers → Glass → Blood → Drugs
A) Wrap all items together in aluminum foil B) Plastic bags for all evidence C) Store wet evidence together in a single container D) Paper envelopes for biological evidence, separate from trace evidence
A) Only photograph the fiber sample B) Sketch the scene and label exact locations of all evidence collected C) Rely on memory for labeling evidence D) Remove evidence without documenting to save time
A) Store in an unmarked envelope to prevent tampering B) Record the date, time, and collector’s initials on the evidence label C) Hand it directly to a lab staff without documentation D) Combine it with other glass fragments from unrelated cases
A) Split the sample: prioritize blood DNA extraction first, then drug analysis B) Perform drug testing first since it is faster C) Analyze only one type of evidence to save resources D) Mix the sample with preservatives and store for future analysis
A) C.Wash gloves to extract evidence, then store B) B.Cut gloves into pieces and place in separate plastic bags C) Remove fibers only and discard the gloves D) Collect gloves as a whole, air dry, and store in paper bags
A) Scraping it into a paper envelope while wet B) Using a wet swab directly on the stain C) Sealing in an airtight plastic bag immediately D) Allowing the sample to air-dry before packaging
A) On adhesive tape sealed in a paper bindle B) In a plastic bag with silica gel C) In cotton padding inside a sealed glass tube D) In a wet swab container
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) Freeze immediately after collection B) Air-dry and package in paper bag C) Place in plastic ziplock D) Immerse in ethanol solution
A) DNA degradation B) Chemical reaction with glass C) Static charge contamination D) Trace transfer or breakage
A) Seal the sample in an airtight plastic bag immediately B) Collect the sample with a wet swab C) Allow the sample to air-dry completely before packaging D) Scrape the sample into a paper envelope while still wet
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) Place the hair in a wet swab container D) Enclose the hair in cotton padding inside a sealed glass tube
A) To fulfil chain of custody requirements B) To ensure the sample is representative of the whole C) To prevent chemical degradation of the sample D) To confirm the evidence's scientific validity
A) Leave it at the scene to avoid contamination B) 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 C) Pour the liquid directly into a plastic container D) Using a sterile cotton swab, air dry, and package in a paper envelope
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) Place it in a plastic bag to protect it from scratches D) Disassemble it to prevent accidental discharge
A) Biological; bacterial toxin B) Chemical; organophosphate C) Biological; viral toxin D) Chemical; heavy meta
A) Atropine, Hydroxocobalamin B) Naloxone C) Vitamin K
A) Both act by enzymatic inhibition B) Chemical poisons like arsenic affect metabolic enzymes directly C) Biological poisons require ingestion to be effective D) Biological poisons generally act faster than chemical
A) Chemical; antidote administration B) Chemical; chelation C) Biological; induced vomiting D) Biological; supportive care
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) Cyanide is more potent than botulinum toxin B) Cyanide requires enzymatic activation 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) Administer fomepizole to inhibit metabolism C) Administer atropine D) B.Use hydroxocobalamin as first-line
A) Chemical poisons are only synthetic B) Both arise exclusively from natural sources C) Biological poisons cannot be fatal D) Biological poisons can originate from bacteria like Clostridium
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) CO is less toxic than ricin in all doses B) Both inhibit cellular respiration directly C) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery D) Both are treated with the same antidotes
A) Culture for Clostridium botulinum B) Administer empiric antibiotics C) Measure serum cholinesterase levels D) Only rely on clinical symptoms
A) Atropine B) Fomepizole C) Hydroxocobalamin D) Vitamin K
A) Protein toxins diffuse faster than lipid-soluble chemicals B) Both cross cell membranes equally C) Both are eliminated through renal excretion only D) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake
A) Determine method of administration and onset of action B) Assume similar onset due to rapid toxicity 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) C.Both outcomes are identical regardless of treatment D) Delayed treatment always has no effect
A) Enzymatic oxidation in mitochondria B) Synaptic acetylcholine degradation C) Red blood cell oxygen transport D) Neuromuscular transmission
A) Naloxone B) Pralidoxime C) Atropine D) Dimercaprol
A) Detectability through spectroscopy B) Mode of administration C) Target organ specificity D) Source of origin
A) Lassaigne’s test B) Marsh test C) Duquenois-Levine test D) Reinsch test
A) May act rapidly with quantifiable doses B) Cause immunological reactions C) Have no specific antidotes D) Exhibit cumulative effects through metabolism
A) Treat both cases identically because both are toxic B) Legal relevance is restricted to chemical poisons; biological toxins are not admissible C) Analyze the mechanism of action, onset, and specific antidotes for each poison to guide both treatment and legal interpretation D) Only chemical poisons require laboratory confirmation; biological poisons are assumed from symptoms
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) All toxins are equivalent for forensic reporting 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) Only chemical poisons can be used as evidence in court
A) Laboratory confirmation is optional for chemical poisons B) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification C) Use identical chemical assays for both poisons D) Only qualitative observations are required for biological poisons
A) Biological poisons are inherently less relevant to forensic investigation B) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions C) Only chemical poisoning requires symptom analysis for evidence purposes D) Symptom similarity is sufficient for both types; mechanism is irrelevant |