A) Documenting the result and preserving the sample for court evidence. B) A.Reporting the result to the police only. C) Administering treatment to the victim. D) Immediately publishing the findings in a scientific journal.
A) C.To calculate the concentration of the chemical. B) To identify the color and odor characteristics. C) To determine the source and legal admissibility of the evidence D) A.To identify the toxic effect.
A) Cross-reference the substance with controlled substances schedules. B) Only notify the laboratory manager. C) C.Test only for lethal chemicals. 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) Allowing multiple technicians to randomly alter procedures. D) C.Testing only for common poisons.
A) Trace chemicals can be reported without documentation. B) C.Trace chemicals are irrelevant unless in large amounts. C) Trace chemicals may suggest exposure but must be corroborated with other evidence. D) A.Trace chemicals prove guilt without further context.
A) Forensic toxicology is like a police interrogator asking questions. B) Forensic toxicology is like a translator between chemical evidence and legal interpretation C) A.Forensic toxicology is like a detective mapping crime scenes. D) Forensic toxicology is like a laboratory technician cleaning samples.
A) Neutralizing the cyanide and discarding the sample. B) Conducting personal experiments to verify toxicity. C) C.Informing the media before law enforcement. D) Immediately reporting findings, preserving evidence, and documenting the analysis.
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) Results should be accepted without documentation. B) A.Confidence is irrelevant; results are always taken as truth. C) Identification is based on reproducible analytical methods and peer-reviewed techniques. D) C.Only visual observation is sufficient.
A) Ignoring its potential effects because it’s a new compound. B) Only checking if the color matches. 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 fingerprints—they may link a suspect to a crime scene. B) C.Residues always prove guilt directly. C) B.Residues are like dust, always irrelevant. 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) How can the concentration of the poison relate to the victim’s cause of death? D) C.Should the victim be ignored if symptoms are mild?
A) Ignore the legal classification and focus solely on chemistry B) A.Proceed without concern for jurisdictional laws. C) Document the finding and consult legal authorities on jurisdiction-specific legislation. D) C.Report the substance as illegal everywhere.
A) 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) Listing the chemicals without relating to cause of death B) Only focusing on the chemical with the highest concentration C) Assuming all compounds were administered intentionally D) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome
A) Principle of individuality B) Principle of contamination control C) Locard’s exchange principle D) Chain of custody
A) Admissibility of expert opinion B) Preservation of corpus delicti C) Scientific reliability of the method D) Authentication under Rules of Evidence
A) Establishing a direct cause of death B) Identifying the antidote for ingestion C) Tracing drug metabolites in human urine D) Determining the lethal dose of poison
A) It constitutes a violation of procedural due process B) It renders the evidence inadmissible due to lack of authentication 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) Substituting eyewitness testimony with expert interpretation C) Reconstructing crime scenes solely by chemical analysis D) Scientifically linking physical evidence to legal elements of a crime
A) To develop new chemical compounds for industrial use B) To teach chemistry to law enforcement personnel C) To analyze chemical evidence to assist in legal investigations D) To regulate the sale of chemicals to the public
A) Calculating the volume of a liquid found at a crime scene B) Measuring the pH of a soil sample C) Determining the exact concentration of a drug in a blood sample D) Identifying the type of explosive used in a bombing
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) Mass Spectrometry B) Distillation C) Polymerase Chain Reaction (PCR) D) Titration
A) To identify the source of a drug or poison B) To determine the legal penalties for drug possession C) To assess the potential effects of a substance based on the amount present in the body D) To understand how different drugs interact with each other
A) Conduct preliminary color tests followed by confirmatory tests to verify the presence of blood B) Immediately report it as blood based on color alone C) Only perform a confirmatory test without preliminary screening D) Ignore the stain because it might be from food
A) They allow rapid screening to prioritize samples while reducing risk of false positives B) Preliminary tests are optional; confirmatory tests are enough C) They provide definitive identification without confirmatory analysis D) Preliminary tests alone are sufficient for legal reporting
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) Using GC-MS or IR spectroscopy after preliminary reagent tests B) Only noting solubility in water C) Relying solely on odor or visual appearance D) Performing a simple colorimetric test only
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) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis. B) Compare only color under a microscope C) Report it as linked to a victim immediately D) Only perform chemical solubility tests
A) Preliminary tests are always accurate and need no validation B) Validation is unnecessary for trace evidence C) Preliminary tests can replace confirmatory tests for efficiency
A) Conduct a confirmatory test such as Takayama or immunoassay to verify. B) Record the color reaction as the final result C) Conclude it is human blood D) Discard the sample because preliminary tests are sufficient
A) Using DNA testing to confirm human biological material B) Reporting preliminary color test results as conclusive identification without confirmatory evidence. C) Confirming trace fibers using micro-FTIR D) Conducting GC-MS on suspected controlled substances
A) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography B) Immediately report it as a drug solution based on smell C) Rely solely on color to identify the substance D) Perform only a solubility test
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) Confirmatory tests are unnecessary if preliminary tests are positive C) Trace evidence is rarely important in court D) Preliminary tests alone are sufficient for legal reporting
A) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) B) Report the stain as blood based on color C) Ignore the stain because it may be paint D) Use only a microscope to identify blood cells
A) Confirmatory tests are performed randomly for fun B) Confirmatory tests are optional decorations in the laboratory C) Confirmatory tests are like a referee confirming a goal after video replay D) Confirmatory tests always replace preliminary tests
A) Assume the paint belongs to the suspect car without testing B) Compare only color to the suspect vehicle C) Conduct preliminary microscopic and chemical characterization, followed by confirmatory spectroscopy (FTIR or Raman) D) Only measure the paint thickness
A) Teichmann test B) ABAcard HemaTrace test C) Benzidine test D) Takayama crystal test
A) Ultraviolet spectroscopy B) Colorimetric comparison test C) Gas Chromatography-Mass Spectrometry (GC–MS) D) Thin Layer Chromatography (TLC)
A) Medullary index measurement B) Microscopic pigmentation test C) Cuticle scale pattern analysis D) Mitochondrial DNA analysis
A) Contact with agricultural fertilizer B) Gunpowder residue deposition C) Exposure to organic solvents D) The suspect handled explosives recently
A) Chain of custody B) Reproducibility C) Sensitivity D) Specificity limitation
A) Saliva test B) Microscopic examination for spermatozoa C) Amylase test D) Acid phosphatase test
A) Gas Chromatography-Mass Spectrometry (GC-MS) B) Microscopic examination C) Thin Layer Chromatography (TLC) D) Melting point determination
A) Burning test B) Infrared Spectroscopy C) Solubility test D) Microscopic examination of colour and texture
A) Yes, if the examiner is very sure about the result B) No, a negative presumptive test does not completely rule out the presence of blood; further testing may be required C) Maybe, depend on the experience of the examiner D) Yes, a negative presumptive test rules out the presence of blood
A) Griess test B) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) C) Luminol test D) Sodium rhodizonate test
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) 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) Freeze the fabric immediately without drying B) Air dry the fabric and store in a breathable container C) Wash the fabric in cold water to prevent bacterial growth D) Place the fabric in a plastic bag while still wet
A) Mix with other drug samples to save space B) Place directly in a sealed plastic bag C) Wrap in paper and store in a cool, dry place D) Dissolve in water for transport
A) Collect fibers using sticky tape and store in paper packets B) Sweep the area with a vacuum cleaner and store the dust in plastic bags C) Place all fibers in a single envelope regardless of source D) Freeze the fibers to preserve color
A) Sweep all glass fragments together in a plastic bag B) Use bare hands to pick fragments and store in plastic containers C) Use gloves and tweezers to collect each fragment, wrapping them in paper 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) Collect evidence from different locations using separate tools and packaging B) Combine evidence in one container to save time C) Wash gloves between collections but reuse the same packaging D) Collect the largest item first, then smaller items
A) Wash the blood to remove soil contaminants B) Immediately store blood in plastic and freeze C) Mix with ethanol and store in a sealed container D) Collect wet blood with a sterile swab and air dry before packaging
A) Blood → Fibers → Glass → Drugs B) Fibers → Glass → Blood → Drugs C) Drugs → Glass → Fibers → Blood D) Glass → Blood → Drugs → Fibers
A) Plastic bags for all evidence B) Store wet evidence together in a single container C) Paper envelopes for biological evidence, separate from trace evidence D) Wrap all items together in aluminum foil
A) Sketch the scene and label exact locations of all evidence collected B) Rely on memory for labeling evidence C) Only photograph the fiber sample D) Remove evidence without documenting to save time
A) Hand it directly to a lab staff without documentation B) Record the date, time, and collector’s initials on the evidence label C) Combine it with other glass fragments from unrelated cases D) Store in an unmarked envelope to prevent tampering
A) Split the sample: prioritize blood DNA extraction first, then drug analysis B) Analyze only one type of evidence to save resources C) Mix the sample with preservatives and store for future analysis D) Perform drug testing first since it is faster
A) C.Wash gloves to extract evidence, then store B) Collect gloves as a whole, air dry, and store in paper bags C) Remove fibers only and discard the gloves D) B.Cut gloves into pieces and place in separate plastic bags
A) Allowing the sample to air-dry before packaging B) Scraping it into a paper envelope while wet C) Using a wet swab directly on the stain D) Sealing in an airtight plastic bag immediately
A) In cotton padding inside a sealed glass tube B) In a wet swab container C) In a plastic bag with silica gel D) On adhesive tape sealed in a paper bindle
A) It fulfills chain of custody requirements B) It ensures sample representativeness C) It confirms the evidence’s scientific validity D) It prevents chemical degradation
A) Freeze immediately after collection B) Air-dry and package in paper bag C) Immerse in ethanol solution D) Place in plastic ziplock
A) DNA degradation B) Static charge contamination C) Trace transfer or breakage D) Chemical reaction with glass
A) Scrape the sample into a paper envelope while still wet B) Collect the sample with a wet swab C) Allow the sample to air-dry completely before packaging D) Seal the sample in an airtight plastic bag immediately
A) Affix the hair to adhesive tape, then seal the tape in a paper bindle B) Place the hair in a wet swab container C) Store the hair in a plastic bag with silica gel D) Enclose the hair in cotton padding inside a sealed glass tube
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) 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) Pour the liquid directly into a plastic container D) Using a sterile cotton swab, air dry, and package in a paper envelope
A) Disassemble it to prevent accidental discharge B) Place it in a plastic bag to protect it from scratches C) Clean it thoroughly to remove fingerprints 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) Biological; viral toxin C) Chemical; organophosphate D) Biological; bacterial toxin
A) Atropine, Hydroxocobalamin B) Naloxone C) Vitamin K
A) Both act by enzymatic inhibition B) Biological poisons generally act faster than chemical C) Biological poisons require ingestion to be effective D) Chemical poisons like arsenic affect metabolic enzymes directly
A) Chemical; chelation B) Biological; induced vomiting C) Biological; supportive care D) Chemical; antidote administration
A) Both produce immediate CNS depression B) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission C) Both require enzymatic activation to exert effects D) Both are neutralized by the same antidote
A) Cyanide requires enzymatic activation B) Both act by the same mechanism C) Botulinum toxin has a lower lethal dose and acts via neuroinhibition D) Cyanide is more potent than botulinum toxin
A) Administer atropine B) Only provide intravenous fluids C) B.Use hydroxocobalamin as first-line D) Administer fomepizole to inhibit metabolism
A) Both arise exclusively from natural sources B) Chemical poisons are only synthetic C) Biological poisons cannot be fatal D) Biological poisons can originate from bacteria like Clostridium
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) C.Mercury is neutralized by antibiotics
A) CO is less toxic than ricin in all doses B) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery C) Both are treated with the same antidotes D) Both inhibit cellular respiration directly
A) Culture for Clostridium botulinum B) Administer empiric antibiotics C) Only rely on clinical symptoms D) Measure serum cholinesterase levels
A) Vitamin K B) Fomepizole C) Atropine D) Hydroxocobalamin
A) Both are eliminated through renal excretion only B) Both cross cell membranes equally C) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake D) Protein toxins diffuse faster than lipid-soluble chemicals
A) Use a single antidote for both cases B) Determine method of administration and onset of action C) Only focus on symptoms for legal evidence D) Assume similar onset due to rapid toxicity
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) Neuromuscular transmission C) Red blood cell oxygen transport D) Enzymatic oxidation in mitochondria
A) Pralidoxime B) Naloxone C) Dimercaprol D) Atropine
A) Mode of administration B) Source of origin C) Detectability through spectroscopy D) Target organ specificity
A) Lassaigne’s test B) Duquenois-Levine test C) Reinsch test D) Marsh test
A) May act rapidly with quantifiable doses B) Exhibit cumulative effects through metabolism C) Cause immunological reactions 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) Treat both cases identically because both are toxic 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) Only chemical poisons are relevant in legal proceedings D) Antidote selection depends on the poison’s nature, mechanism, and biological target
A) All toxins are equivalent for forensic reporting B) Court testimony does not require distinction between toxin types C) Only chemical poisons can be used as evidence in court D) Biological and chemical poisons differ in structure, action, and detection, so each must be assessed independently
A) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification B) Use identical chemical assays for both poisons C) Only qualitative observations are required for biological poisons D) Laboratory confirmation is optional for chemical poisons
A) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions B) Biological poisons are inherently less relevant to forensic investigation C) Only chemical poisoning requires symptom analysis for evidence purposes D) Symptom similarity is sufficient for both types; mechanism is irrelevant |