A) A.Reporting the result to the police only. B) Administering treatment to the victim. C) Immediately publishing the findings in a scientific journal. D) Documenting the result and preserving the sample for court evidence.
A) C.To calculate the concentration of the chemical. B) A.To identify the toxic effect. C) To identify the color and odor characteristics. D) To determine the source and legal admissibility of the evidence
A) C.Test only for lethal chemicals. B) Cross-reference the substance with controlled substances schedules. C) A.Conduct the test and discard the sample. D) Only notify the laboratory manager.
A) Allowing multiple technicians to randomly alter procedures. B) C.Testing only for common poisons. C) A.Using the cheapest and fastest analytical method. D) Following validated protocols and maintaining chain of custody
A) Trace chemicals may suggest exposure but must be corroborated with other evidence. B) Trace chemicals can be reported without documentation. C) A.Trace chemicals prove guilt without further context. D) C.Trace chemicals are irrelevant unless in large amounts.
A) Forensic toxicology is like a translator between chemical evidence and legal interpretation 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 laboratory technician cleaning samples.
A) Conducting personal experiments to verify toxicity. B) Neutralizing the cyanide and discarding the sample. C) Immediately reporting findings, preserving evidence, and documenting the analysis. D) C.Informing the media before law enforcement.
A) B.Using validated analytical methods for controlled substances. B) Recording results in an official laboratory report. C) Altering test results to fit the expected outcome. D) A.Maintaining a detailed chain of custody for samples.
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) Reporting the substance as legal if it is not listed in the old law 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) 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) Can the poison be replaced with another chemical for convenience? B) B.What is the cheapest method to detect the poison? 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) C.Report the substance as illegal everywhere. B) A.Proceed without concern for jurisdictional laws. C) Ignore the legal classification and focus solely on chemistry D) Document the finding and consult legal authorities on jurisdiction-specific legislation.
A) It guarantees that evidence results are admissible and reliable in court. B) A.It ensures that evidence is analyzed quickly. C) It allows multiple labs to change the sample freely. D) It only tracks the sample’s weight.
A) Integrating chemical identification, dosage, metabolism, and legal implications to interpret the outcome B) Assuming all compounds were administered intentionally C) Only focusing on the chemical with the highest concentration D) Listing the chemicals without relating to cause of death
A) Principle of individuality B) Principle of contamination control C) Locard’s exchange principle D) Chain of custody
A) Scientific reliability of the method B) Admissibility of expert opinion C) Authentication under Rules of Evidence D) Preservation of corpus delicti
A) Establishing a direct cause of death B) Identifying the antidote for ingestion C) Determining the lethal dose of poison D) Tracing drug metabolites in human urine
A) It invalidates the chain of custody automatically B) It renders the evidence inadmissible due to lack of authentication C) It affects the credibility but not admissibility of evidence D) It constitutes a violation of procedural due process
A) Scientifically linking physical evidence to legal elements of a crime B) Substituting eyewitness testimony with expert interpretation C) Reconstructing crime scenes solely by chemical analysis D) Establishing guilt beyond reasonable doubt through confession
A) To analyze chemical evidence to assist in legal investigations B) To develop new chemical compounds for industrial use C) To teach chemistry to law enforcement personnel D) To regulate the sale of chemicals to the public
A) Measuring the pH of a soil sample B) Calculating the volume of a liquid found at a crime scene C) Determining the exact concentration of a drug in a blood sample D) Identifying the type of explosive used in a bombing
A) The list of ingredients in a chemical compound B) The documented history of the handling and storage of evidence. The order in which witnesses are called to testify in court C) The sequence of chemical reactions used to identify a substance
A) Distillation B) Titration C) Polymerase Chain Reaction (PCR) D) Mass Spectrometry
A) To understand how different drugs interact with each other B) To determine the legal penalties for drug possession C) To identify the source of a drug or poison D) To assess the potential effects of a substance based on the amount present in the body
A) Only perform a confirmatory test without preliminary screening B) Ignore the stain because it might be from food C) Immediately report it as blood based on color alone D) Conduct preliminary color tests followed by confirmatory tests to verify the presence of blood
A) Preliminary tests alone are sufficient for legal reporting B) Preliminary tests are optional; confirmatory tests are enough C) They allow rapid screening to prioritize samples while reducing risk of false positives D) They provide definitive identification without confirmatory analysis
A) Report the hair as human without further testing B) DNA analysis first, then discard microscopic examination C) Only microscopic comparison without DNA testing D) Microscopy for morphological assessment (preliminary) and DNA analysis (confirmatory)
A) Relying solely on odor or visual appearance B) Only noting solubility in water C) Performing a simple colorimetric test only D) Using GC-MS or IR spectroscopy after preliminary reagent tests
A) Confirmatory tests are only for decorative purposes B) Preliminary tests are the final verdict; confirmatory tests are optional C) Preliminary tests and confirmatory tests are identical D) Preliminary tests are like a screening metal detector, and confirmatory tests are like x-ray scanning to verify the object
A) Only perform chemical solubility tests B) Compare only color under a microscope C) Use preliminary microscopic characteristics and confirm with FTIR or microchemical analysis. D) Report it as linked to a victim immediately
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) Discard the sample because preliminary tests are sufficient C) Conduct a confirmatory test such as Takayama or immunoassay to verify. D) Record the color reaction as the final result
A) Confirming trace fibers using micro-FTIR B) Conducting GC-MS on suspected controlled substances C) Reporting preliminary color test results as conclusive identification without confirmatory evidence. D) Using DNA testing to confirm human biological material
A) Rely solely on color to identify the substance B) Immediately report it as a drug solution based on smell C) Conduct preliminary reagent tests for common substances, then confirm with spectroscopy or chromatography D) Perform only a solubility test
A) Relying on the victim’s testimony B) Only noting the firearm type at the scene C) First performing chemical spot tests, then confirming with SEM-EDX particle analysis D) Using only SEM-EDX for identification
A) Confirmatory tests are unnecessary if preliminary tests are positive B) Both tests provide complementary information, reducing false positives and ensuring admissibility 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) Ignore the stain because it may be paint D) Report the stain as blood based on color
A) Confirmatory tests are optional decorations in the laboratory B) Confirmatory tests always replace preliminary tests C) Confirmatory tests are performed randomly for fun 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) Compare only color to the suspect vehicle D) Assume the paint belongs to the suspect car without testing
A) ABAcard HemaTrace test B) Benzidine test C) Takayama crystal test D) Teichmann test
A) Colorimetric comparison test B) Gas Chromatography-Mass Spectrometry (GC–MS) C) Ultraviolet spectroscopy D) Thin Layer Chromatography (TLC)
A) Microscopic pigmentation test B) Cuticle scale pattern analysis C) Mitochondrial DNA analysis D) Medullary index measurement
A) The suspect handled explosives recently B) Contact with agricultural fertilizer C) Gunpowder residue deposition D) Exposure to organic solvents
A) Reproducibility B) Sensitivity C) Specificity limitation D) Chain of custody
A) Amylase test B) Saliva test C) Acid phosphatase test D) Microscopic examination for spermatozoa
A) Melting point determination B) Thin Layer Chromatography (TLC) C) Gas Chromatography-Mass Spectrometry (GC-MS) D) Microscopic examination
A) Solubility test B) Infrared Spectroscopy C) Microscopic examination of colour and texture D) Burning 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) Maybe, depend on the experience of the examiner D) Yes, if the examiner is very sure about the result
A) Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) B) Griess test C) Luminol test D) Sodium rhodizonate 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) Place the hair in a sealed plastic bag to prevent contamination B) A.Comb the clothing thoroughly with a metal comb C) Use tweezers to handle the hair and store it in a paper envelope D) Wash the hair before storage to remove potential contaminants
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) Place directly in a sealed plastic bag B) Wrap in paper and store in a cool, dry place C) Dissolve in water for transport D) Mix with other drug samples to save space
A) Sweep the area with a vacuum cleaner and store the dust in plastic bags B) Collect fibers using sticky tape and store in paper packets C) Place all fibers in a single envelope regardless of source D) Freeze the fibers to preserve color
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) 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) 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) Immediately store blood in plastic and freeze B) Mix with ethanol and store in a sealed container C) Collect wet blood with a sterile swab and air dry before packaging D) Wash the blood to remove soil contaminants
A) Fibers → Glass → Blood → Drugs B) Blood → Fibers → Glass → Drugs C) Glass → Blood → Drugs → Fibers D) Drugs → Glass → Fibers → Blood
A) Plastic bags for all evidence B) Wrap all items together in aluminum foil C) Paper envelopes for biological evidence, separate from trace evidence D) Store wet evidence together in a single container
A) Rely on memory for labeling evidence B) Only photograph the fiber sample C) Sketch the scene and label exact locations of all evidence collected D) Remove evidence without documenting to save time
A) Combine it with other glass fragments from unrelated cases B) Hand it directly to a lab staff without documentation C) Record the date, time, and collector’s initials on the evidence label D) Store in an unmarked envelope to prevent tampering
A) Perform drug testing first since it is faster B) Mix the sample with preservatives and store for future analysis C) Analyze only one type of evidence to save resources D) Split the sample: prioritize blood DNA extraction first, then drug analysis
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) Scraping it into a paper envelope while wet B) Sealing in an airtight plastic bag immediately C) Using a wet swab directly on the stain D) Allowing the sample to air-dry before packaging
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 prevents chemical degradation B) It fulfills chain of custody requirements C) It confirms the evidence’s scientific validity D) It ensures sample representativeness
A) Place in plastic ziplock B) Immerse in ethanol solution C) Air-dry and package in paper bag D) Freeze immediately after collection
A) DNA degradation B) Trace transfer or breakage C) Chemical reaction with glass D) Static charge contamination
A) Collect the sample with a wet swab B) Allow the sample to air-dry completely before packaging C) Seal the sample in an airtight plastic bag immediately D) Scrape the sample into a paper envelope while still wet
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 prevent chemical degradation of the sample B) To fulfil chain of custody requirements C) To confirm the evidence's scientific validity D) To ensure the sample is representative of the whole
A) Leave it at the scene to avoid contamination B) Pour the liquid directly into a plastic container C) Using a sterile cotton swab, air dry, and package in a paper envelope D) 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
A) Disassemble it to prevent accidental discharge B) Clean it thoroughly to remove fingerprints 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) Biological; viral toxin B) Chemical; organophosphate C) Chemical; heavy meta D) Biological; bacterial toxin
A) Naloxone B) Vitamin K C) Atropine, Hydroxocobalamin
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; chelation B) Biological; induced vomiting C) Biological; supportive care D) Chemical; antidote administration
A) Both require enzymatic activation to exert effects B) Methanol causes metabolic derangements; tetanus toxin disrupts neurotransmission C) Both are neutralized by the same antidote D) Both produce immediate CNS depression
A) Both act by the same mechanism B) Cyanide is more potent than botulinum toxin C) Cyanide requires enzymatic activation D) Botulinum toxin has a lower lethal dose and acts via neuroinhibition
A) B.Use hydroxocobalamin as first-line B) Only provide intravenous fluids C) Administer atropine D) Administer fomepizole to inhibit metabolism
A) Biological poisons cannot be fatal B) Chemical poisons are only synthetic C) Biological poisons can originate from bacteria like Clostridium D) Both arise exclusively from natural sources
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) 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) Culture for Clostridium botulinum C) Measure serum cholinesterase levels D) Administer empiric antibiotics
A) Atropine B) Hydroxocobalamin C) Vitamin K D) Fomepizole
A) Protein toxins diffuse faster than lipid-soluble chemicals B) Both cross cell membranes equally 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) C.Both outcomes are identical regardless of treatment C) Early antidote administration in chemical poisoning significantly improves prognosis D) Biological poisons are unaffected by treatment timing
A) Synaptic acetylcholine degradation B) Red blood cell oxygen transport C) Neuromuscular transmission D) Enzymatic oxidation in mitochondria
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) 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) 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) All poisons are treated with the same antidotes regardless of type B) Only chemical poisons are relevant in legal proceedings C) Biological poisons never require antidotes D) Antidote selection depends on the poison’s nature, mechanism, and biological target
A) Court testimony does not require distinction between toxin types B) All toxins are equivalent for forensic reporting 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) Laboratory confirmation is optional for chemical poisons B) Only qualitative observations are required for biological poisons C) Use identical chemical assays for both 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) Symptom similarity is sufficient for both types; mechanism is irrelevant C) Consider the distinct pharmacokinetics, mechanisms, and available antidotes for each type to support both courtroom and clinical conclusions D) Only chemical poisoning requires symptom analysis for evidence purposes |