FS_FCTOXI
  • 1. Which route of entry produces the fastest effect?
    Oral
    Dermal
    Inhalation
    Rectal
A) Dermal
B) Rectal
C) Inhalation
D) Oral
E) Inhalation
  • 2. Forensic toxicology is best defined as the study of:
A) Poisons in industrial work
B) Drugs used in medicine
C) Chemical reactions in the body
D) Toxic substances in relation to law
  • 3. Which professional is responsible for analyzing drugs and poisons for court purposes?
A) Forensic toxicologist
B) Chemist
C) Medical technologist
D) forensic Pathologist
  • 4. Which of the following is NOT a branch of forensic toxicology?
A) Forensic drug testing
B) Human performance toxicology
C) Postmortem toxicology
D) Clinical pharmacology
  • 5. Forensic toxicology is MOST applicable in which investigation?
A) Forgery
B) Arson
C) Theft
D) Poisoning
  • 6. A poison is a substance that
A) Produces harmful effects when introduced into the body
B) Is synthetic
C) Is illegal
D) Is always fatal
  • 7. Which is classified as a mineral poison?
A) Cocaine
B) Arsenic
C) Morphine
D) . Nicotine
  • 8. Carbon monoxide is classified as a:
A) Solid poison
B) Volatile liquid
C) Gaseous poison
D) Metallic poison
  • 9. Acute poisoning means exposure that is:
A) Repeated
B) Sudden and short-term
C) Occupational
D) Long-term
  • 10. Distribution refers to the:
A) Movement of drugs in the body
B) Breakdown of drugs
C) Removal of drugs
D) Entry of drugs into blood
  • 11. The BEST blood sample in postmortem toxicology is:
A) Pulmonary blood
B) . Cardiac blood
C) Femoral blood
D) Jugular blood
  • 12. Decomposition may cause toxicology results to be:
A) Misleading
B) More accurate
C) Unaffected
D) Faster
  • 13. Long-term drug use is best detected using:
A) Hair
B) Urine
C) Blood
D) Saliva
  • 14. Which specimen best reflects recent drug use?
A) Blood
B) Bone
C) Nails
D) Hair
  • 15. Forensic toxicology is MOST important in which crime?
A) Drug-related offenses
B) Cybercrime
C) Kidnapping
D) Estafa
  • 16. A toxicologist testifying in court is called a(n):
  • 17. A toxicologist testifying in court is called a(n):
A) Expert witness
B) Arsenic
C) Mercury
D) Cyanide
  • 18. Forensic toxicology is MOST concerned with:
A) . Chemical synthesis
B) Drug marketing
C) Legal interpretation of poisons
D) Medical treatment
  • 19. The ultimate goal of forensic toxicology is to:
A) Discover new drugs
B) Support justice through science
C) Examination of his testimony
  • 20. Most common sample for resent drugs or alcohol use
A) . Blood and Urine
B) Semen
C) Tissue
D) Hair
  • 21. The most common sample used for drug test
A) saliva
B) Hashis
C) Urine
  • 22. A condition whrein males have no spermatozoa at all in their seminal fluid
A) Aspermia
B) Oligospermia
C) Anemia
  • 23. Application of benzidine test it gives what color?
A) Blue
B) Yellow
C) White
  • 24. In what mode of administration paison by causing production of sweat
A) Oral
B) Inhalation
C) Injection
D) Anal
  • 25. Which evidence offers strongest resistance to decomposition
A) Blood
B) Semen
C) Urine
D) Hair
  • 26. A condition in which the supply of oxygen to the blood has been reduced below working levels
A) Homicide
B) Syncope
C) Come
D) Asphyxia
  • 27. The hair belong to human if the medulla is
A) Greater than 0.5
B) Approximately 0.5
C) one of these
D) Less than 0.5
  • 28. If the specimen show positive results of presence of blood .what color will appear immediately after performing quaiacum test for blood
A) Rose red
B) Intense blue
C) Beautiful Blue
  • 29. It's contains the most information about the hair
A) Facial hair
B) Tip
C) Hair shaft
D) Head hair
  • 30. 14. The medical dessection and examination of a body in order to determine the cause of death is.
A) Cadaric Spasm
B) Autopsy
C) Exhumation
D) Death Certificate
  • 31. How long after death can a toxicology report be done
A) 5 to 7 weeks
B) 4 to 6 weeks
C) 4 to 5 weeks
  • 32. This test is almost specific for human semen
A) Acid phosphatase test
B) Barberi'o test
C) Florence test
D) None of these
  • 33. Blood is red in color due to the present to:
A) Serum
B) Platelets
C) Hemoglobin
  • 34. What is the must widely used method for finding invisible blood
A) Luminol Test
B) Takayama
C) The kastle-Meyer
D) Luminol test
  • 35. The medical condition of a man whose semen condition no sperm
A) Azoospermia
B) Oligospermia
C) Spermatozoa
  • 36. What is forensic toxicology?
A) Study of poisons only
B) Application of toxicology to aid in crime investigation
C) Analysis of drugs in sports
  • 37. What is the primary goal of forensic toxicology?
A) Identify diseases
B) Develop new medications
C) Study environmental toxins
D) Determine presence and effect of toxic substances in crimes
  • 38. What types of samples are commonly analyzed in forensic toxicology
A) Plants and chemicals
B) Blood, urine, hair, tissue
C) Food and cosmetics
  • 39. What is post-mortem toxicology?
A) Study of poison antidotes
B) Analysis of toxic substances in deceased individuals
C) Investigation of workplace accidents
  • 40. What is the role of gas chromatography-mass spectrometry (GC-MS) in forensic toxicology?
A) Measure pH levels
B) Separate and identify volatile compounds
C) Analyze DNA
  • 41. What is the difference between a screening test and a confirmatory test?
A) Screening is final, confirmatory is preliminary
B) Screening is for drugs, confirmatory is for poisons
C) Screening is preliminary, confirmatory is specific
  • 42. What is the significance of the LOD (Limit of Detection) in toxicology testing?
A) Measures drug efficacy
B) Indicates maximum safe dose
C) Lowest concentration of a substance detectable
  • 43. What is a common matrix for drug testing?
A) Urine
B) Bones
C) Salaiva
D) Hair
  • 44. How does hair analysis contribute to forensic Toxicology
A) Detects poison
B) Provides historical record of drug exposure
C) measure impairment
  • 45. What is the purpose of chain of custody in toxicology testing
A) to reduce cost
B) Ensure sample integrity and admissibility in court
C) mo maximize evidence
  • 46. What is an adulterant in urine drug testing?
A) Substance added to mask test results
B) preservative
C) test enhancer
  • 47. What is the significance of metabolite analysis in toxicology?
A) Helps determine drug use history
B) Identifies antidotes
C) Determines drug potency
  • 48. How does alcohol affect the body in acute intoxication
A) Stimulates CNS
B) Enhances vision
C) Depresses CNS
  • 49. What is BAC (Blood Alcohol Concentration)?
A) Test for drugs
B) Measure of liver function
C) Percentage of alcohol in blood
  • 50. What is the Widmark formula used for?
A) Estimate BAC
B) Identify poisons
C) Calculate drug dosage
  • 51. What are common post-mortem changes affecting toxicology results?
A) Enhanced drug effects
B) Increased metabolism
C) Redistribution and decomposition
  • 52. What is the role of LC-MS/MS in forensic toxicology?*
A) Detect explosives
B) Sensitive detection of drugs and metabolites
C) Analyze metals
  • 53. How does tolerance impact toxicology interpretation?
A) Lowers drug levels
B) Reduces drug efficacy
C) Affects interpretation of drug levels and impairment
  • 54. What is the significance of the therapeutic index?
A) Defines LOD
B) Identifies antidotes
C) Indicates safety margin between efficacy and toxicity
D) Measures drug potency
  • 55. What is a poison, in toxicological terms?* A: Any medication
A) Substance causing harmful physiological effects
B) Only heavy metals
C) Legal drugs only
  • 56. The mechanism of toxicity of carbon monoxide is:
A) inhibition of cytochrome oxidase
B) Formation of carboxyhemoglobin
C) Pulmonary edema
  • 57. Formic acid is the toxic metabolite responsible for complications in:
A) Acetone poisoning
B) Ethylene glycol poisoning
C) Methanol poisoning
  • 58. The most common route of exposure in occupational lead poisoning is:
A) Skin absorption
B) Ingestion
C) Inhalation
  • 59. 1.It is a quick and simple method used to identify different types of textile fibers based when exposed to Ultraviolet Light.
A) Flourescent Test
B) Burning or Ignition Test
C) Microscopic Examination
  • 60. Animal Fibers exhibit a_________when exposed to UV light.
A) .Pink fluorescence
B) Green fluorescencelp-045r
C) .Bluish fluorescence
  • 61. A forensic scientist is analyzing DNA from a crime scene. Which of the following sources would provide the most reliable DNA sample?
A) A bloodstain on the victim's clothing
B) A bloodstain on the victim's clothing
C) A fingernail clipping from the suspect
D) A strand of hair without the root
  • 62. A forensic toxicologist is investigating a case of suspected alcohol poisoning. Which analytical method is MOST commonly used to determine the blood alcohol concentration?
A) Gas chromatography
B) Immunoassay
C) Colorimetric assay
D) Ultraviolet-visible spectrophotometry
  • 63. A forensic chemist is analyzing a sample of ink from a ransom note. Which of the following techniques would be MOST useful for comparing the ink to a reference sample?
A) Microspectrophotometry
B) Visual examination
C) Ultraviolet-visible spectrophotometry
D) Thin-layer chromatography
  • 64. A forensic toxicologist is analyzing a blood sample from a deceased individual. Initial screening indicates the presence of a benzodiazepine. To confirm the specific drug and its concentration, which technique should be used?
A) Color spot test
B) Immunoassay
C) Ultraviolet-visible spectrophotometry
D) Gas chromatography-mass spectrometry
  • 65. A forensic chemist receives a sample of white powder from a crime scene. Preliminary tests suggest the presence of an opioid. Which of the following analytical techniques would be MOST appropriate for confirming the specific type of opioid present and quantifying its concentration?
A) Microcrystal test
B) Immunoassay
C) Thin-layer chromatography
D) Gas chromatography-mass spectrometry
  • 66. A forensic scientist is examining a fiber sample found on a victim's clothing. Which of the following techniques would be MOST useful for identifying the type of fiber?
A) Microscopic examination
B) Infrared spectroscopy
C) Burn test
D) Solubility test
  • 67. A forensic chemist is analyzing a sample of lubricant from a sexual assault case. Which of the following techniques would be MOST useful for identifying the type of lubricant?
A) Microscopic examination
B) Visual examination
C) Infrared spectroscopy
D) Gas chromatography-mass spectrometry
  • 68. Which of the following is a type of biological matrix that can be used for drug testing?
A) All of the above
B) Blood
C) Urine
D) Hair
  • 69. What is the purpose of quality control in forensic toxicology?
A) To reduce the cost of testing
B) To speed up the testing process
C) To minimize the amount of sample needed
D) To ensure the accuracy and reliability of the results
  • 70. Which of the following is a common route of exposure to toxins?
A) All of the above
B) Inhalation
C) Ingestion
D) Skin absorption
  • 71. Which of the following is a limitation of immunoassay screening tests?
A) They require a large sample volume
B) They are very expensive
C) They can produce false positive results
D) They are not sensitive enough to detect low concentrations of drugs
  • 72. What is the purpose of a screening test in forensic toxicology?
A) To quickly identify the possible presence of drugs or poisons
B) To determine the mechanism of action of a drug
C) To confirm the identity of a drug with absolute certainty
D) To quantify the exact amount of a drug in a sample
  • 73. What is the term for the study of the adverse effects of chemical, physical, or biological agents on living organisms?
A) Pharmacology
B) Pathology
C) Toxicology
D) Physiology
  • 74. Which of the following is a common method for collecting breath samples for alcohol testing?
A) Breathalyzer
B) Saliva swab
C) Urine collection
D) Blood draw
  • 75. Which of the following is a common preservative used for blood samples in forensic toxicology?
A) Hydrochloric acid
B) Sodium fluoride
C) Acetic acid
D) Sodium chloride
  • 76. Which analytical technique is often used as a confirmatory test in forensic toxicology?
A) Gas chromatography-mass spectrometry
B) Immunoassay
C) Colorimetric assay
D) Thin-layer chromatograph
  • 77. What type of sample is MOST commonly used in forensic toxicology for initial screening?
A) Hair
B) Urine
C) Bone
D) Tissue
  • 78. Which of the following is NOT a primary goal of forensic toxicology?
A) Identifying the presence of drugs and poisons in biological samples
B) Interpreting the findings in a legal context
C) Providing medical treatment to individuals who have been poisoned
D) Determining the effects of drugs and poisons on the human body
  • 79. Which of the following is an example of a volatile substance that may be analyzed in forensic toxicology?
A) Diazepam
B) Ethanol
C) Morphine
D) Aspirin
  • 80. What is the role of a toxicologist in a death investigation?
A) To interview witnesses
B) To perform the autopsy
C) To determine the cause of death
D) To analyze biological samples for the presence of drugs and poisons
  • 81. What is the role of forensic toxicology in drug-facilitated sexual assault cases?
A) To identify the perpetrator
B) To determine the cause of death
C) To provide counseling to the victim
D) To detect the presence of drugs that may have been used to incapacitate the victim
  • 82. A forensic toxicologist is analyzing a blood sample for the presence of cyanide. What specific precaution is MOST important during sample collection and handling?
A) Collection in a heparinized tube
B) Use of a preservative to prevent degradation
C) Immediate freezing of the sample
D) Collection in a tube with sodium fluoride
  • 83. A person is found dead with a syringe near the body. What is the FIRST step in the toxicological analysis?
A) Conduct a scene investigation
B) Perform a full autopsy
C) Obtain blood and urine samples
D) Collect and analyze the syringe contents
  • 84. A body is exhumed several years after burial. Which tissue is MOST likely to provide reliable toxicology results?
A) Liver
B) Muscle
C) Hair
D) Brain
  • 85. What is the primary purpose of performing a drug extraction in forensic toxicology?
A) To preserve the sample for future testing
B) To concentrate the drug of interest and remove interfering substances
C) To calibrate the analytical instrument
D) To dilute the sample
  • 86. Which of the following best describes the term "pharmacokinetics"?
A) The study of the effects of drugs on the body
B) The study of drug interactions
C) The study of the chemical structure of drugs
D) The study of how the body absorbs, distributes, metabolizes, and eliminates drugs
  • 87. Which of the following is a common "false positive" result in drug screening?
A) A negative result when drugs are present
B) An accurate result
C) A positive result when drugs are not present
D) An inconclusive result
  • 88. Which type of sample is often used for workplace drug testing programs?
A) Blood
B) Hair
C) Saliva
D) Urine
  • 89. A body is found in a remote forest. Insect activity suggests the person died several weeks ago. What sample is MOST useful for toxicology testing?
A) Vitreous humor
B) Bone marrow
C) Urine
D) Fresh blood
  • 90. A body is exhumed several years after burial. Which tissue is MOST likely to provide reliable toxicology results?
A) Muscle
B) Brain
C) Liver
D) Hair
  • 91. Which analytical technique is most widely accepted as the confirmatory test in forensic toxicology?
A) Thin Layer Chromatography (TLC)
B) Gas Chromatography–Mass Spectrometry (GC-MS)
  • 92. Which poison classically causes garlic-like odor from the body?
A) Mercury
B) Arsenic
C) Lead
  • 93. Which specimen is most resistant to postmortem decomposition and useful for long-term drug detection?
A) Saliva
B) Urine
C) Hair
  • 94. Which branch of forensic toxicology deals with drug use in criminal investigations such as DUI cases?
A) Human performance toxicology
B) Environmental toxicology
C) Fire-related deaths
  • 95. Carbon monoxide poisoning is commonly associated with which type of crime?
A) Fire-related deaths
B) Sexual assault
C) Theft
  • 96. In a suspected drug-facilitated sexual assault case reported after 48 hours, the most useful sample for toxicological analysis would be:
A) urine
B) blood
C) hair
  • 97. A suspect claims he was not intoxicated during a crime. Which toxicological test result is most legally reliable to assess impairment at the time of offense?
A) Saliva test
B) Urine drug screen
C) Blood toxicology report
  • 98. In homicide investigations, forensic toxicology mainly helps to establish:
A) Identity of the offender
B) Cause and role of toxic substances in dea
C) Criminal intent
  • 99. Forensic toxicology evidence is most useful in criminology to establish:
A) Presence and role of toxic substances in a crime
B) Criminal intent
C) Crime scene reconstruction
  • 100. A delayed onset of blindness after intoxication is characteristic of poisoning by:
A) Methanol
B) Ethanol
C) Carbon monoxide
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