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) A.To identify the toxic effect. 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) Cross-reference the substance with controlled substances schedules. C) Only notify the laboratory manager. 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) C.Trace chemicals are irrelevant unless in large amounts. B) A.Trace chemicals prove guilt without further context. C) Trace chemicals may suggest exposure but must be corroborated with other evidence. D) Trace chemicals can be reported without documentation.
A) Forensic toxicology is like a translator between chemical evidence and legal interpretation B) Forensic toxicology is like a laboratory technician cleaning samples. C) Forensic toxicology is like a police interrogator asking questions. D) A.Forensic toxicology is like a detective mapping crime scenes.
A) C.Informing the media before law enforcement. B) Conducting personal experiments to verify toxicity. C) Immediately reporting findings, preserving evidence, and documenting the analysis. D) Neutralizing the cyanide and discarding the sample.
A) Recording results in an official laboratory report. B) B.Using validated analytical methods for controlled substances. C) A.Maintaining a detailed chain of custody for samples. D) Altering test results to fit the expected outcome.
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) Only checking if the color matches. B) Comparing molecular structure, toxicity, and legal classification. C) Reporting the substance as legal if it is not listed in the old law D) Ignoring its potential effects because it’s a new compound.
A) C.Residues always prove guilt directly. B) Residues are like fingerprints—they may link a suspect to a crime scene. C) Residues are only useful for academic studies. D) B.Residues are like dust, always irrelevant.
A) Can the poison be replaced with another chemical for convenience? B) How can the concentration of the poison relate to the victim’s cause of death? C) C.Should the victim be ignored if symptoms are mild? D) B.What is the cheapest method to detect the poison?
A) C.Report the substance as illegal everywhere. B) Document the finding and consult legal authorities on jurisdiction-specific legislation. C) Ignore the legal classification and focus solely on chemistry D) A.Proceed without concern for jurisdictional laws.
A) It only tracks the sample’s weight. B) It guarantees that evidence results are admissible and reliable in court. C) It allows multiple labs to change the sample freely. D) A.It ensures that evidence is analyzed quickly.
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) Chain of custody C) Locard’s exchange principle D) Principle of contamination control
A) Authentication under Rules of Evidence B) Scientific reliability of the method C) Admissibility of expert opinion D) Preservation of corpus delicti
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 constitutes a violation of procedural due process B) It affects the credibility but not admissibility of evidence C) It renders the evidence inadmissible due to lack of authentication D) It invalidates the chain of custody automatically
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 develop new chemical compounds for industrial use B) To regulate the sale of chemicals to the public C) To analyze chemical evidence to assist in legal investigations D) To teach chemistry to law enforcement personnel
A) Measuring the pH of a soil sample B) Identifying the type of explosive used in a bombing C) Determining the exact concentration of a drug in a blood sample D) Calculating the volume of a liquid found at a crime scene
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) Mass Spectrometry B) Polymerase Chain Reaction (PCR) C) Titration D) Distillation
A) To identify the source of a drug or poison B) To understand how different drugs interact with each other C) To determine the legal penalties for drug possession 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) Ignore the stain because it might be from food C) Conduct preliminary color tests followed by confirmatory tests to verify the presence of blood D) Only perform a confirmatory test without preliminary screening
A) Preliminary tests are optional; confirmatory tests are enough B) They provide definitive identification without confirmatory analysis C) Preliminary tests alone are sufficient for legal reporting D) They allow rapid screening to prioritize samples while reducing risk of false positives
A) Report the hair as human without further testing B) DNA analysis first, then discard microscopic examination C) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) D) Only microscopic comparison without DNA testing
A) Only noting solubility in water B) Relying solely on odor or visual appearance C) Using GC-MS or IR spectroscopy after preliminary reagent tests D) Performing a simple colorimetric test only
A) Confirmatory tests are only for decorative purposes B) Preliminary tests are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object 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 can replace confirmatory tests for efficiency B) Preliminary tests are always accurate and need no validation C) Validation is unnecessary for trace evidence
A) Discard the sample because preliminary tests are sufficient B) Conclude it is human blood C) Record the color reaction as the final result D) Conduct a confirmatory test such as Takayama or immunoassay to verify.
A) Conducting GC-MS on suspected controlled substances B) Reporting preliminary color test results as conclusive identification without confirmatory evidence. C) Confirming trace fibers using micro-FTIR D) Using DNA testing to confirm human biological material
A) Perform only a solubility test B) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography C) Immediately report it as a drug solution based on smell D) Rely solely on color to identify the substance
A) First performing chemical spot tests, then confirming with SEM-EDX particle analysis B) Using only SEM-EDX for identification C) Only noting the firearm type at the scene D) Relying on the victim’s testimony
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) Use only a microscope to identify blood cells B) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) C) Report the stain as blood based on color 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) Conduct preliminary microscopic and chemical characterization, followed by confirmatory spectroscopy (FTIR or Raman) B) Only measure the paint thickness C) Assume the paint belongs to the suspect car without testing D) Compare only color to the suspect vehicle
A) Takayama crystal test B) ABAcard HemaTrace test C) Benzidine test D) Teichmann test
A) Ultraviolet spectroscopy B) Thin Layer Chromatography (TLC) C) Gas Chromatography-Mass Spectrometry (GC–MS) D) Colorimetric comparison test
A) Medullary index measurement B) Mitochondrial DNA analysis C) Cuticle scale pattern analysis D) Microscopic pigmentation test
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) Microscopic examination for spermatozoa B) Saliva test C) Amylase test D) Acid phosphatase test
A) Thin Layer Chromatography (TLC) B) Gas Chromatography-Mass Spectrometry (GC-MS) C) Microscopic examination D) Melting point determination
A) Burning test B) Microscopic examination of colour and texture C) Solubility test D) Infrared Spectroscopy
A) Maybe, depend on the experience of the examiner B) Yes, if the examiner is very sure about the result 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) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) B) Luminol test C) Sodium rhodizonate test D) Griess test
A) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope B) Scrape the blood into a plastic bag and store at room temperature C) Wash the blood with distilled water and then freeze the residue 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) A.Comb the clothing thoroughly with a metal comb C) Wash the hair before storage to remove potential contaminants D) Place the hair in a sealed plastic bag to prevent contamination
A) Air dry the fabric and store in a breathable container B) Place the fabric in a plastic bag while still wet C) Freeze the fabric immediately without drying D) Wash the fabric in cold water to prevent bacterial growth
A) Place directly in a sealed plastic bag B) Mix with other drug samples to save space C) Dissolve in water for transport D) Wrap in paper and store in a cool, dry place
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) 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) 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) Rub the tool mark with graphite to highlight it, then photograph 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) 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) Blood → Fibers → Glass → Drugs B) Drugs → Glass → Fibers → Blood C) Glass → Blood → Drugs → Fibers D) Fibers → Glass → Blood → Drugs
A) Wrap all items together in aluminum foil B) Paper envelopes for biological evidence, separate from trace evidence C) Plastic bags for all evidence D) Store wet evidence together in a single container
A) Sketch the scene and label exact locations of all evidence collected B) Only photograph the fiber sample C) Rely on memory for labeling evidence 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) Combine it with other glass fragments from unrelated cases D) Hand it directly to a lab staff without documentation
A) Mix the sample with preservatives and store for future analysis B) Analyze only one type of evidence to save resources C) Split the sample: prioritize blood DNA extraction first, then drug analysis D) Perform drug testing first since it is faster
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) In cotton padding inside a sealed glass tube B) In a plastic bag with silica gel C) In a wet swab container 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) Place in plastic ziplock C) Air-dry and package in paper bag D) Immerse in ethanol solution
A) Chemical reaction with glass B) Static charge contamination C) Trace transfer or breakage D) DNA degradation
A) Collect the sample with a wet swab B) Seal the sample in an airtight plastic bag immediately C) Scrape the sample into a paper envelope while still wet D) Allow the sample to air-dry completely before packaging
A) Affix the hair to adhesive tape, then seal the tape in a paper bindle B) Store the hair in a plastic bag with silica gel 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 ensure the sample is representative of the whole C) To confirm the evidence's scientific validity D) To fulfil chain of custody requirements
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) Clean it thoroughly to remove fingerprints B) Secure it in a cardboard box, noting the position of the safety and any cartridges remaining in the chamber C) Disassemble it to prevent accidental discharge D) Place it in a plastic bag to protect it from scratches
A) Chemical; organophosphate B) Biological; viral toxin C) Chemical; heavy meta D) Biological; bacterial toxin
A) Atropine, Hydroxocobalamin B) Naloxone C) Vitamin K
A) Biological poisons generally act faster than chemical B) Biological poisons require ingestion to be effective C) Both act by enzymatic inhibition D) Chemical poisons like arsenic affect metabolic enzymes directly
A) Chemical; antidote administration B) Chemical; chelation C) Biological; supportive care D) Biological; induced vomiting
A) Both produce immediate CNS depression B) Both are neutralized by the same antidote C) Both require enzymatic activation to exert effects D) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission
A) Cyanide is more potent than botulinum toxin B) Botulinum toxin has a lower lethal dose and acts via neuroinhibition C) Both act by the same mechanism D) Cyanide requires enzymatic activation
A) Only provide intravenous fluids B) Administer atropine C) Administer fomepizole to inhibit metabolism D) B.Use hydroxocobalamin as first-line
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) Mercury is a biological poison that inhibits acetylcholinesterase B) Mercury is a chemical poison causing enzyme inactivation and renal damage C) C.Mercury is neutralized by antibiotics D) Mercury acts by producing neurotoxins like botulinum
A) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery B) Both are treated with the same antidotes C) Both inhibit cellular respiration directly D) CO is less toxic than ricin in all doses
A) Culture for Clostridium botulinum B) Administer empiric antibiotics C) Only rely on clinical symptoms D) Measure serum cholinesterase levels
A) Hydroxocobalamin B) Vitamin K C) Fomepizole D) Atropine
A) Protein toxins diffuse faster than lipid-soluble chemicals B) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake C) Both are eliminated through renal excretion only D) Both cross cell membranes equally
A) Assume similar onset due to rapid toxicity B) Determine method of administration and onset of action 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) 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) Enzymatic oxidation in mitochondria B) Synaptic acetylcholine degradation C) Red blood cell oxygen transport D) Neuromuscular transmission
A) Naloxone B) Dimercaprol C) Atropine D) Pralidoxime
A) Detectability through spectroscopy B) Target organ specificity C) Source of origin D) Mode of administration
A) Reinsch test B) Lassaigne’s test C) Duquenois-Levine test D) Marsh test
A) Cause immunological reactions B) Have no specific antidotes C) Exhibit cumulative effects through metabolism D) May act rapidly with quantifiable doses
A) Analyze the mechanism of action, onset, and specific antidotes for each poison to guide both treatment and legal interpretation B) Treat both cases identically because both are toxic C) Only chemical poisons require laboratory confirmation; biological poisons are assumed from symptoms D) Legal relevance is restricted to chemical poisons; biological toxins are not admissible
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) Biological and chemical poisons differ in structure, action, and detection, so each must be assessed independently D) All toxins are equivalent for forensic reporting
A) Only qualitative observations are required for biological poisons B) Use identical chemical assays for both 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) 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 |