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) C.To calculate the concentration of the chemical. B) To determine the source and legal admissibility of the evidence C) To identify the color and odor characteristics. D) A.To identify the toxic effect.
A) A.Conduct the test and discard the sample. B) Cross-reference the substance with controlled substances schedules. C) C.Test only for lethal chemicals. D) Only notify the laboratory manager.
A) Allowing multiple technicians to randomly alter procedures. B) Following validated protocols and maintaining chain of custody C) A.Using the cheapest and fastest analytical method. D) C.Testing only for common poisons.
A) C.Trace chemicals are irrelevant unless in large amounts. B) Trace chemicals can be reported without documentation. 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 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) Immediately reporting findings, preserving evidence, and documenting the analysis. B) C.Informing the media before law enforcement. C) Conducting personal experiments to verify toxicity. 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) C.Only visual observation is sufficient. B) A.Confidence is irrelevant; results are always taken as truth. C) Identification is based on reproducible analytical methods and peer-reviewed techniques. D) Results should be accepted without documentation.
A) Reporting the substance as legal if it is not listed in the old law B) Ignoring its potential effects because it’s a new compound. C) Only checking if the color matches. D) Comparing molecular structure, toxicity, and legal classification.
A) Residues are only useful for academic studies. B) C.Residues always prove guilt directly. 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) Can the poison be replaced with another chemical for convenience? C) B.What is the cheapest method to detect the poison? 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) 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) Assuming all compounds were administered intentionally B) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome C) Only focusing on the chemical with the highest concentration D) Listing the chemicals without relating to cause of death
A) Principle of contamination control B) Principle of individuality C) Chain of custody D) Locard’s exchange principle
A) Preservation of corpus delicti B) Admissibility of expert opinion C) Authentication under Rules of Evidence D) Scientific reliability of the method
A) Identifying the antidote for ingestion B) Establishing a direct cause of death C) Tracing drug metabolites in human urine D) Determining the lethal dose of poison
A) It affects the credibility but not admissibility of evidence B) It renders the evidence inadmissible due to lack of authentication C) It constitutes a violation of procedural due process D) It invalidates the chain of custody automatically
A) Substituting eyewitness testimony with expert interpretation B) Establishing guilt beyond reasonable doubt through confession C) Scientifically linking physical evidence to legal elements of a crime D) Reconstructing crime scenes solely by chemical analysis
A) To analyze chemical evidence to assist in legal investigations B) To teach chemistry to law enforcement personnel C) To develop new chemical compounds for industrial use D) To regulate the sale of chemicals to the public
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 sequence of chemical reactions used to identify a substance B) The list of ingredients in a chemical compound 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 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 determine the legal penalties for drug possession D) To understand how different drugs interact with each other
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) Only perform a confirmatory test without preliminary screening D) Ignore the stain because it might be from food
A) They provide definitive identification without confirmatory analysis B) Preliminary tests alone are sufficient for legal reporting C) They allow rapid screening to prioritize samples while reducing risk of false positives D) Preliminary tests are optional; confirmatory tests are enough
A) DNA analysis first, then discard microscopic examination B) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) C) Only microscopic comparison without DNA testing D) Report the hair as human without further testing
A) Using GC-MS or IR spectroscopy after preliminary reagent tests B) Performing a simple colorimetric test only C) Only noting solubility in water D) Relying solely on odor or visual appearance
A) Preliminary tests and confirmatory tests are identical B) Confirmatory tests are only for decorative purposes C) Preliminary tests are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object D) Preliminary tests are the final verdict; confirmatory tests are optional
A) Report it as linked to a victim immediately B) Only perform chemical solubility tests C) Compare only color under a microscope D) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis.
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) Conduct a confirmatory test such as Takayama or immunoassay to verify. B) Discard the sample because preliminary tests are sufficient C) Record the color reaction as the final result D) Conclude it is human blood
A) Confirming trace fibers using micro-FTIR B) Reporting preliminary color test results as conclusive identification without confirmatory evidence. C) Conducting GC-MS on suspected controlled substances D) Using DNA testing to confirm human biological material
A) Rely solely on color to identify the substance B) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography C) Perform only a solubility test D) Immediately report it as a drug solution based on smell
A) Only noting the firearm type at the scene B) First performing chemical spot tests, then confirming with SEM-EDX particle analysis C) Relying on the victim’s testimony D) Using only SEM-EDX for identification
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) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) B) Use only a microscope to identify blood cells C) Ignore the stain because it may be paint D) Report the stain as blood based on color
A) Confirmatory tests are performed randomly for fun B) Confirmatory tests are like a referee confirming a goal after video replay C) Confirmatory tests are optional decorations in the laboratory 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) 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) Teichmann test D) ABAcard HemaTrace 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) Mitochondrial DNA analysis C) Cuticle scale pattern analysis D) Microscopic pigmentation test
A) Exposure to organic solvents B) Contact with agricultural fertilizer C) The suspect handled explosives recently D) Gunpowder residue deposition
A) Chain of custody B) Specificity limitation C) Sensitivity D) Reproducibility
A) Microscopic examination for spermatozoa B) Amylase test C) Saliva test D) Acid phosphatase test
A) Gas Chromatography-Mass Spectrometry (GC-MS) B) Microscopic examination C) Melting point determination D) Thin Layer Chromatography (TLC)
A) Solubility test B) Burning test C) Microscopic examination of colour and texture D) Infrared Spectroscopy
A) No, a negative presumptive test does not completely rule out the presence of blood; further testing may be required B) Yes, a negative presumptive test rules out the presence of blood C) Yes, if the examiner is very sure about the result D) Maybe, depend on the experience of the examiner
A) Luminol test B) Sodium rhodizonate test C) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) D) Griess test
A) Mix the blood with ethanol and store in a sealed container B) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope C) Scrape the blood into a plastic bag and store at room temperature D) Wash the blood with distilled water and then freeze the residue
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) 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) Dissolve in water for transport B) Wrap in paper and store in a cool, dry place C) Mix with other drug samples to save space D) Place directly in a sealed plastic bag
A) Freeze the fibers to preserve color B) Sweep the area with a vacuum cleaner and store the dust in plastic bags C) Collect fibers using sticky tape and store in paper packets D) Place all fibers in a single envelope regardless of source
A) Dissolve the glass in acid to simplify storage B) Sweep all glass fragments together in a plastic bag 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) Measure the tool mark dimensions and discard the site evidence B) Rub the tool mark with graphite to highlight it, then photograph C) Apply tape to lift the mark and store in a plastic bag D) Make a silicone cast of the tool mark and send to lab
A) Wash gloves between collections but reuse the same packaging B) Combine evidence in one container to save time C) Collect the largest item first, then smaller items D) Collect evidence from different locations using separate tools and packaging
A) Collect wet blood with a sterile swab and air dry before packaging B) Wash the blood to remove soil contaminants C) Mix with ethanol and store in a sealed container D) Immediately store blood in plastic and freeze
A) Glass → Blood → Drugs → Fibers B) Fibers → Glass → Blood → Drugs C) Drugs → Glass → Fibers → Blood D) Blood → Fibers → Glass → Drugs
A) Store wet evidence together in a single container B) Paper envelopes for biological evidence, separate from trace evidence C) Plastic bags for all evidence D) Wrap all items together in aluminum foil
A) Sketch the scene and label exact locations of all evidence collected B) Only photograph the fiber sample C) Remove evidence without documenting to save time D) Rely on memory for labeling evidence
A) Store in an unmarked envelope to prevent tampering B) Hand it directly to a lab staff without documentation C) Combine it with other glass fragments from unrelated cases D) Record the date, time, and collector’s initials on the evidence label
A) Analyze only one type of evidence to save resources B) Split the sample: prioritize blood DNA extraction first, then drug analysis C) Perform drug testing first since it is faster D) Mix the sample with preservatives and store for future analysis
A) Collect gloves as a whole, air dry, and store in paper bags B) C.Wash gloves to extract evidence, then store C) B.Cut gloves into pieces and place in separate plastic bags D) Remove fibers only and discard the gloves
A) Scraping it into a paper envelope while wet B) Sealing in an airtight plastic bag immediately C) Allowing the sample to air-dry before packaging D) Using a wet swab directly on the stain
A) In a plastic bag with silica gel B) In cotton padding inside a sealed glass tube C) In a wet swab container D) On adhesive tape sealed in a paper bindle
A) It fulfills chain of custody requirements B) It prevents chemical degradation C) It ensures sample representativeness D) It confirms the evidence’s scientific validity
A) Freeze immediately after collection B) Place in plastic ziplock C) Immerse in ethanol solution D) Air-dry and package in paper bag
A) Static charge contamination B) Chemical reaction with glass C) DNA degradation D) Trace transfer or breakage
A) Seal the sample in an airtight plastic bag immediately B) Scrape the sample into a paper envelope while still wet C) Allow the sample to air-dry completely before packaging D) Collect the sample with a wet swab
A) Enclose the hair in cotton padding inside a sealed glass tube B) Store the hair in a plastic bag with silica gel C) Affix the hair to adhesive tape, then seal the tape in a paper bindle D) Place the hair in a wet swab container
A) To confirm the evidence's scientific validity B) To fulfil chain of custody requirements C) To ensure the sample is representative of the whole D) To prevent chemical degradation of the sample
A) Pour the liquid directly into a plastic container 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) Using a sterile cotton swab, air dry, and package in a paper envelope D) Leave it at the scene to avoid contamination
A) Disassemble it to prevent accidental discharge B) Secure it in a cardboard box, noting the position of the safety and any cartridges remaining in the chamber C) Clean it thoroughly to remove fingerprints D) Place it in a plastic bag to protect it from scratches
A) Chemical; heavy meta B) Chemical; organophosphate C) Biological; viral toxin D) Biological; bacterial toxin
A) Atropine, Hydroxocobalamin B) Vitamin K C) Naloxone
A) Biological poisons require ingestion to be effective B) Chemical poisons like arsenic affect metabolic enzymes directly C) Both act by enzymatic inhibition D) Biological poisons generally act faster than chemical
A) Chemical; antidote administration B) Chemical; chelation C) Biological; supportive care D) Biological; induced vomiting
A) Both produce immediate CNS depression B) Both require enzymatic activation to exert effects C) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission D) Both are neutralized by the same antidote
A) Cyanide is more potent than botulinum toxin B) Both act by the same mechanism C) Cyanide requires enzymatic activation D) Botulinum toxin has a lower lethal dose and acts via neuroinhibition
A) Only provide intravenous fluids B) B.Use hydroxocobalamin as first-line C) Administer fomepizole to inhibit metabolism D) Administer atropine
A) Biological poisons can originate from bacteria like Clostridium B) Biological poisons cannot be fatal C) Both arise exclusively from natural sources D) Chemical poisons are only synthetic
A) Mercury acts by producing neurotoxins like botulinum B) C.Mercury is neutralized by antibiotics C) Mercury is a biological poison that inhibits acetylcholinesterase D) Mercury is a chemical poison causing enzyme inactivation and renal damage
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) Administer empiric antibiotics C) Measure serum cholinesterase levels D) Culture for Clostridium botulinum
A) Vitamin K B) Atropine C) Fomepizole D) Hydroxocobalamin
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) Only focus on symptoms for legal evidence B) Use a single antidote for both cases C) Determine method of administration and onset of action D) Assume similar onset due to rapid toxicity
A) Biological poisons are unaffected by treatment timing B) Delayed treatment always has no effect C) Early antidote administration in chemical poisoning significantly improves prognosis D) C.Both outcomes are identical regardless of treatment
A) Red blood cell oxygen transport B) Enzymatic oxidation in mitochondria C) Synaptic acetylcholine degradation D) Neuromuscular transmission
A) Atropine B) Naloxone C) Dimercaprol D) Pralidoxime
A) Target organ specificity B) Source of origin C) Detectability through spectroscopy D) Mode of administration
A) Lassaigne’s test B) Marsh test C) Reinsch test D) Duquenois-Levine test
A) Exhibit cumulative effects through metabolism B) May act rapidly with quantifiable doses C) Cause immunological reactions D) Have no specific antidotes
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) Only chemical poisons are relevant in legal proceedings B) All poisons are treated with the same antidotes regardless of type C) Biological poisons never require antidotes D) Antidote selection depends on the poison’s nature, mechanism, and biological target
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) Only qualitative observations are required for biological poisons B) Laboratory confirmation is optional for chemical poisons C) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification D) Use identical chemical assays for both poisons
A) Biological poisons are inherently less relevant to forensic investigation B) Only chemical poisoning requires symptom analysis for evidence purposes C) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions D) Symptom similarity is sufficient for both types; mechanism is irrelevant |