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) To determine the source and legal admissibility of the evidence B) To identify the color and odor characteristics. C) A.To identify the toxic effect. D) C.To calculate the concentration of the chemical.
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) Allowing multiple technicians to randomly alter procedures. B) A.Using the cheapest and fastest analytical method. C) C.Testing only for common poisons. D) Following validated protocols and maintaining chain of custody
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 laboratory technician cleaning samples. B) Forensic toxicology is like a police interrogator asking questions. C) A.Forensic toxicology is like a detective mapping crime scenes. 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) Conducting personal experiments to verify toxicity. D) Neutralizing the cyanide and discarding the sample.
A) Recording results in an official laboratory report. B) A.Maintaining a detailed chain of custody for samples. C) Altering test results to fit the expected outcome. D) B.Using validated analytical methods for controlled substances.
A) C.Only visual observation is sufficient. B) Results should be accepted without documentation. C) A.Confidence is irrelevant; results are always taken as truth. D) Identification is based on reproducible analytical methods and peer-reviewed techniques.
A) Ignoring its potential effects because it’s a new compound. B) Reporting the substance as legal if it is not listed in the old law C) Comparing molecular structure, toxicity, and legal classification. D) Only checking if the color matches.
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) Can the poison be replaced with another chemical for convenience? B) B.What is the cheapest method to detect the poison? C) C.Should the victim be ignored if symptoms are mild? D) How can the concentration of the poison relate to the victim’s cause of death?
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) A.It ensures that evidence is analyzed quickly. B) It allows multiple labs to change the sample freely. C) It guarantees that evidence results are admissible and reliable in court. D) It only tracks the sample’s weight.
A) Only focusing on the chemical with the highest concentration B) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome C) Listing the chemicals without relating to cause of death D) Assuming all compounds were administered intentionally
A) Chain of custody B) Principle of individuality C) Locard’s exchange principle D) Principle of contamination control
A) Scientific reliability of the method B) Admissibility of expert opinion C) Preservation of corpus delicti D) Authentication under Rules of Evidence
A) Determining the lethal dose of poison B) Tracing drug metabolites in human urine C) Establishing a direct cause of death D) Identifying the antidote for ingestion
A) It invalidates the chain of custody automatically B) It affects the credibility but not admissibility of evidence C) It constitutes a violation of procedural due process D) It renders the evidence inadmissible due to lack of authentication
A) Scientifically linking physical evidence to legal elements of a crime B) Reconstructing crime scenes solely by chemical analysis C) Establishing guilt beyond reasonable doubt through confession D) Substituting eyewitness testimony with expert interpretation
A) To analyze chemical evidence to assist in legal investigations B) To regulate the sale of chemicals to the public C) To develop new chemical compounds for industrial use D) To teach chemistry to law enforcement personnel
A) Identifying the type of explosive used in a bombing B) Measuring the pH of a soil sample 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 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) Distillation B) Titration C) Mass Spectrometry D) Polymerase Chain Reaction (PCR)
A) To determine the legal penalties for drug possession B) To identify the source of a drug or poison C) To understand how different drugs interact with each other D) To assess the potential effects of a substance based on the amount present in the body
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) Preliminary tests are optional; confirmatory tests are enough 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 alone are sufficient for legal reporting
A) Report the hair as human without further testing B) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory) C) DNA analysis first, then discard microscopic examination D) Only microscopic comparison without DNA 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 are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object B) Confirmatory tests are only for decorative purposes C) Preliminary tests and confirmatory tests are identical D) Preliminary tests are the final verdict; confirmatory tests are optional
A) Only perform chemical solubility tests B) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis. C) Report it as linked to a victim immediately D) Compare only color under a microscope
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) Conclude it is human blood B) Record the color reaction as the final result C) Conduct a confirmatory test such as Takayama or immunoassay to verify. D) Discard the sample because preliminary tests are sufficient
A) Confirming trace fibers using micro-FTIR B) Using DNA testing to confirm human biological material 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) 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) Using only SEM-EDX for identification C) Relying on the victim’s testimony D) First performing chemical spot tests, then confirming with SEM-EDX particle analysis
A) Preliminary tests alone are sufficient for legal reporting B) Trace evidence is rarely important in court 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) Test the stain with phenolphthalein (preliminary), then perform Takayama (confirmatory) C) Ignore the stain because it may be paint D) Use only a microscope to identify blood cells
A) Confirmatory tests are like a referee confirming a goal after video replay B) Confirmatory tests are optional decorations in the laboratory C) Confirmatory tests are performed randomly for fun 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) Takayama crystal test C) ABAcard HemaTrace test D) Benzidine test
A) Ultraviolet spectroscopy B) Gas Chromatography-Mass Spectrometry (GC–MS) C) Colorimetric comparison test D) Thin Layer Chromatography (TLC)
A) Medullary index measurement B) Microscopic pigmentation test C) Mitochondrial DNA analysis D) Cuticle scale pattern analysis
A) Gunpowder residue deposition B) Exposure to organic solvents C) Contact with agricultural fertilizer D) The suspect handled explosives recently
A) Sensitivity B) Specificity limitation C) Reproducibility D) Chain of custody
A) Acid phosphatase test B) Microscopic examination for spermatozoa C) Saliva test D) Amylase test
A) Melting point determination B) Gas Chromatography-Mass Spectrometry (GC-MS) C) Thin Layer Chromatography (TLC) D) Microscopic examination
A) Solubility test B) Microscopic examination of colour and texture C) Infrared Spectroscopy D) Burning test
A) Yes, a negative presumptive test rules out the presence of blood 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, if the examiner is very sure about the result
A) Sodium rhodizonate test B) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) C) Griess test D) Luminol test
A) Mix the blood with ethanol and store in a sealed container B) Scrape the blood into a plastic bag and store at room temperature C) Use a sterile swab to collect the blood, allow it to air dry, and place it in a paper envelope D) Wash the blood with distilled water and then freeze the residue
A) A.Comb the clothing thoroughly with a metal comb B) Use tweezers to handle the hair and store it in a paper envelope C) Place the hair in a sealed plastic bag to prevent contamination D) Wash the hair before storage to remove potential contaminants
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) Place directly in a sealed plastic bag B) Dissolve in water for transport C) Mix with other drug samples to save space D) Wrap in paper and store in a cool, dry place
A) Freeze the fibers to preserve color B) Place all fibers in a single envelope regardless of source C) Collect fibers using sticky tape and store in paper packets D) Sweep the area with a vacuum cleaner and store the dust in plastic bags
A) Use gloves and tweezers to collect each fragment, wrapping them in paper B) Sweep all glass fragments together in a plastic bag C) Dissolve the glass in acid to simplify storage 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) Measure the tool mark dimensions and discard the site evidence C) Apply tape to lift the mark and store in a plastic bag D) Rub the tool mark with graphite to highlight it, then photograph
A) Combine evidence in one container to save time B) Collect evidence from different locations using separate tools and packaging C) Collect the largest item first, then smaller items D) Wash gloves between collections but reuse the same packaging
A) Mix with ethanol and store in a sealed container B) Collect wet blood with a sterile swab and air dry before packaging C) Wash the blood to remove soil contaminants D) Immediately store blood in plastic and freeze
A) Fibers → Glass → Blood → Drugs B) Blood → Fibers → Glass → Drugs C) Glass → Blood → Drugs → Fibers D) Drugs → Glass → Fibers → Blood
A) Paper envelopes for biological evidence, separate from trace evidence B) Plastic bags for all evidence C) Wrap all items together in aluminum foil 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) 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) 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) B.Cut gloves into pieces and place in separate plastic bags B) Remove fibers only and discard the gloves C) Collect gloves as a whole, air dry, and store in paper bags D) C.Wash gloves to extract evidence, then store
A) Scraping it into a paper envelope while wet B) Allowing the sample to air-dry before packaging C) Sealing in an airtight plastic bag immediately D) Using a wet swab directly on the stain
A) On adhesive tape sealed in a paper bindle B) In cotton padding inside a sealed glass tube C) In a wet swab container D) In a plastic bag with silica gel
A) It confirms the evidence’s scientific validity B) It fulfills chain of custody requirements C) It prevents chemical degradation D) It ensures sample representativeness
A) Air-dry and package in paper bag B) Immerse in ethanol solution C) Freeze immediately after collection D) Place in plastic ziplock
A) Static charge contamination B) Trace transfer or breakage C) DNA degradation 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) Place the hair in a wet swab container B) Enclose the hair in cotton padding inside a sealed glass tube C) Store the hair in a plastic bag with silica gel D) Affix the hair to adhesive tape, then seal the tape in a paper bindle
A) To fulfil chain of custody requirements B) To prevent chemical degradation of the sample C) To confirm the evidence's scientific validity D) To ensure the sample is representative of the whole
A) Using a sterile cotton swab, air dry, and package in a paper envelope B) Leave it at the scene to avoid contamination 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) Pour the liquid directly into a plastic container
A) Clean it thoroughly to remove fingerprints B) Disassemble it to prevent accidental discharge C) Place it in a plastic bag to protect it from scratches D) Secure it in a cardboard box, noting the position of the safety and any cartridges remaining in the chamber
A) Chemical; organophosphate B) Biological; viral toxin C) Biological; bacterial toxin D) Chemical; heavy meta
A) Atropine, Hydroxocobalamin B) Vitamin K C) Naloxone
A) Both act by enzymatic inhibition B) Biological poisons require ingestion to be effective C) Biological poisons generally act faster than chemical D) Chemical poisons like arsenic affect metabolic enzymes directly
A) Chemical; chelation B) Chemical; antidote administration C) Biological; supportive care D) Biological; induced vomiting
A) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission B) Both produce immediate CNS depression C) Both are neutralized by the same antidote D) Both require enzymatic activation to exert effects
A) Cyanide is more potent than botulinum toxin B) Botulinum toxin has a lower lethal dose and acts via neuroinhibition C) Cyanide requires enzymatic activation D) Both act by the same mechanism
A) Administer fomepizole to inhibit metabolism B) Only provide intravenous fluids C) Administer atropine D) B.Use hydroxocobalamin as first-line
A) Biological poisons can originate from bacteria like Clostridium B) Both arise exclusively from natural sources C) Chemical poisons are only synthetic D) Biological poisons cannot be fatal
A) Mercury is a chemical poison causing enzyme inactivation and renal damage B) Mercury is a biological poison that inhibits acetylcholinesterase C) C.Mercury is neutralized by antibiotics D) Mercury acts by producing neurotoxins like botulinum
A) Both are treated with the same antidotes B) CO is less toxic than ricin in all doses C) Ricin disrupts protein synthesis; CO binds hemoglobin to prevent oxygen delivery D) Both inhibit cellular respiration directly
A) Measure serum cholinesterase levels B) Only rely on clinical symptoms C) Administer empiric antibiotics D) Culture for Clostridium botulinum
A) Atropine B) Vitamin K C) Fomepizole D) Hydroxocobalamin
A) Both cross cell membranes equally B) Lipid-soluble chemicals diffuse rapidly; protein toxins may require receptor-mediated uptake C) Both are eliminated through renal excretion only D) Protein toxins diffuse faster than lipid-soluble chemicals
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) Early antidote administration in chemical poisoning significantly improves prognosis B) Biological poisons are unaffected by treatment timing C) Delayed treatment always has no effect D) C.Both outcomes are identical regardless of treatment
A) Red blood cell oxygen transport B) Enzymatic oxidation in mitochondria C) Neuromuscular transmission D) Synaptic acetylcholine degradation
A) Pralidoxime B) Dimercaprol C) Naloxone D) Atropine
A) Target organ specificity B) Mode of administration C) Source of origin D) Detectability through spectroscopy
A) Marsh test B) Duquenois-Levine test C) Lassaigne’s test D) Reinsch test
A) Exhibit cumulative effects through metabolism B) Have no specific antidotes C) May act rapidly with quantifiable doses D) Cause immunological reactions
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) Antidote selection depends on the poison’s nature, mechanism, and biological target B) Biological poisons never require antidotes C) Only chemical poisons are relevant in legal proceedings D) All poisons are treated with the same antidotes regardless of type
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) Only qualitative observations are required for biological poisons B) Use identical chemical assays for both poisons C) Apply analytical chemistry techniques for arsenic and protein-based detection methods for ricin to ensure accurate identification D) Laboratory confirmation is optional for chemical poisons
A) Only chemical poisoning requires symptom analysis for evidence purposes B) Biological poisons are inherently less relevant to forensic investigation 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 |