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