ThatQuiz Test Library Take this test now
ECHO 1_AREA2
Contributed by: Magbanua
  • 1. Which characteristic makes dental identification unique among other biological identifiers?
A) Teeth provide genetic information directly
B) Teeth change shape with age
C) Teeth regenerate after severe trauma
D) Teeth resist decomposition and extreme heat
  • 2. The Henry FBI Classification System primarily serves what purpose?
A) To organize fingerprint cards for retrieval
B) To measure ridge density
C) To detect forged fingerprints
D) To classify latent prints at crime scenes
  • 3. Why is dental charting superior during mass fatality incidents?
A) Dentition is highly resistant to post-mortem damage
B) It requires no prior dental records
C) Dental features rarely match across victims
D) Dental charts contain compulsory genetic markers
  • 4. In the Henry FBI system, what is the role of the Secondary Classification?
A) It refines the filing sequence using ridge patterns on index fingers
B) It classifies latent prints with insufficient ridge flow
C) It determines which fingerprints are suitable for database entry
D) It identifies Level 3 pore characteristics
  • 5. Which of the following best describes the purpose of descriptive biometric analysis (DBA)?
A) To analyze DNA in partially decomposed bodies
B) To categorize fingerprints by their whorl values
C) To measure body temperature variations post-mortem
D) To match physical traits when friction ridges are unavailable
  • 6. Why must classified fingerprint cards be arranged in numerical order?
A) It allows automatic destruction of old records
B) It prevents contamination of fingerprint ink
C) It ensures standardized filing and efficient retrieval
D) It segregates fingerprints by ethnicity and age
  • 7. A latent print contains clear bifurcations but lacks a visible core and delta. How should the examiner classify it?
A) As a loop pattern
B) As pattern-indeterminate
C) As an arch pattern
D) As a whorl pattern
  • 8. A fingerprint with two deltas and circular ridge flow should be classified as a:
A) Plain whorl
B) Composite pattern
C) Radial loop
D) Tented arch
  • 9. Two prints share equal ridge counts but differ significantly in ridge flow direction. What should the examiner apply?
A) Ridge count principle
B) Principle of individuality
C) Ridge density standard
D) Principle of permanence
  • 10. A loop fingerprint shows ridge irregularities due to surface distortion. How should the examiner evaluate these irregularities?
A) Reject the print based solely on the pattern
B) Evaluate minutiae configuration rather than the overall loop pattern
C) Convert the loop pattern into a whorl for easier analysis
D) Ignore minutiae and classify using pattern shape only
  • 11. Which principle justifies the admissibility of fingerprint evidence in court due to its unchanging nature?
A) Divergence
B) Multiplicity
C) Permanence
D) Universality
  • 12. Two fingerprints share ridge endings in the same area but differ in pore positions and ridge edge shapes. What conclusion is most accurate?
A) They are inconclusive due to lack of Level 1 detail
B) They can be considered identical after applying ridge counting
C) They belong to the same individual because ridge endings match
D) They originate from different individuals based on Level 3 differences
  • 13. A corpse has severely dried fingers. What method should be applied before taking prints?
A) Use iodine fuming before rolling
B) Use rehydration or tissue-builder injection
C) Apply magnetic powder
D) Cut the finger and discard the skin
  • 14. You must immediately develop latent prints on a smooth glass surface. What method is most suitable?
A) Ninhydrin
B) Iodine fuming
C) Powder dusting
D) Silver nitrate
  • 15. A rolled impression shows smudging due to downward pressure. How should the technician correct this?
A) Reduce pressure and allow natural rolling
B) Roll the finger faster to limit distortion
C) Use only plain impressions instead of rolled
D) Increase pressure to improve contrast
  • 16. A latent print on porous paper requires chemical development. Which sequence is best?
A) Powder → cyanoacrylate → magnetic powder
B) DFO → ninhydrin → water rinse
C) Ninhydrin → DFO → silver nitrate as needed
D) Superglue → black powder → ALS
  • 17. A latent print on rough, uneven wood must be preserved. What lifting method is appropriate?
A) Heat transfer sheet
B) Gel lifter
C) Ink transfer
D) Adhesive tape
  • 18. After cyanoacrylate fuming, ridge detail appears faint. Why does applying powder improve visibility?
A) Powder converts pores into visible white marks
B) Cyanoacrylate prevents any further enhancement
C) The hardened cyanoacrylate surface enhances powder adhesion
D) Powder chemically dissolves cyanoacrylate
  • 19. During the Analysis phase, you find a latent print with limited ridge clarity. What should you do?
A) Skip analysis and ask for supervisor approval
B) Proceed directly to comparison
C) Decide whether the print is suitable before moving on
D) Immediately declare the print an identification
  • 20. A verifier receives a fingerprint case already evaluated by another examiner. What method ensures objectivity?
A) Reprocessing the evidence using different chemicals
B) Rejecting the first examiner’s conclusion automatically
C) Conducting blind and independent verification
D) Reviewing the first examiner’s notes first
  • 21. Which principle of photography refers to arranging visual elements to create a balanced and meaningful image?
A) Light Intensity
B) Spectral Quality
C) Composition
D) Exposure Value
  • 22. What type of flash produces illumination directly toward the subject without redirection?
A) Off-Camera Flash
B) Rear-Curtain Flash
C) Direct Flash
D) Bounce Flash
  • 23. Hard light creates which characteristic effect on forensic photographs?
A) Increased shadow definition
B) Minimal textural visibility
C) Lower contrast on surfaces
D) Soft blending of edges
  • 24. Bounce flash is preferred in indoor crime scenes because it—
A) Produces softer and more diffused illumination
B) Enhances only reflective surfaces
C) Uses stronger wattage for sharp detail
D) Eliminates the need for a tripod
  • 25. Why is color temperature crucial in forensic documentation?
A) It determines the shutter speed accuracy
B) It limits the depth of field range
C) It ensures faithful representation of evidence colors
D) It avoids lens distortion
  • 26. The rule of thirds primarily helps the investigator achieve what goal?
A) Prevent overexposure
B) Improve visual clarity and subject positioning
C) Ensure realistic color tones
D) Increase flash synchronization
  • 27. An investigator photographs a low-light indoor scene without using flash. Which exposure adjustment is MOST appropriate to avoid motion blur?
A) Narrow the aperture to f/16
B) Increase ISO to a higher value
C) Reduce ISO to 100
D) Use a slower shutter speed
  • 28. When photographing a bloodstain pattern, the photographer must use a scale placed next to the stain. This procedural act demonstrates which forensic principle?
A) Horizontal Composition Rule
B) Exaggeration Prevention Rule
C) Evidence Size Documentation
D) Background Neutralization
  • 29. You must photograph a shoeprint at an oblique angle. Which camera setting will best enhance subtle surface details?
A) Slow shutter, high ISO
B) High ISO, fast shutter
C) Wide aperture, auto ISO
D) Small aperture, low ISO
  • 30. In photographing a dark outdoor crime scene, which action maximizes proper exposure without altering evidence?
A) Adjusting lens zoom to crop shadows
B) Moving the evidence closer to artificial light
C) Increasing flash power directly at the evidence
D) Increasing shutter time using a tripod
  • 31. During medium-range shots, the photographer must capture evidence relative to fixed surroundings. This ensures—
A) Light intensity remains constant
B) Depth of field is minimized
C) Flash reflection is avoided
D) Scene orientation is established
  • 32. When capturing fingerprints using an alternate light source, the photographer must adjust the camera to—
A) Disable macro mode to avoid magnification
B) Use high ISO to enhance ambient background
C) Match the wavelength with white balance settings
D) Increase shutter speed to darken fluorescence
  • 33. A crime scene photo appears overly bright with loss of detail on reflective surfaces. Which combination MOST likely caused the error?
A) Low ISO and fast shutter speed
B) High ISO and wide aperture
C) Narrow aperture with rear flash
D) Slow shutter with diffused lighting
  • 34. Two investigators photographed the same bullet trajectory. One used wide-angle; the other used telephoto. Which issue may arise in court?
A) Telephoto eliminates shadow accuracy
B) Telephoto may distort the color temperature
C) Wide-angle removes depth of field
D) Wide-angle may alter spatial relationships
  • 35. A digital camera fails to record images despite allowing shutter release. Which part should be checked FIRST?
A) Lens focusing ring
B) ISO control
C) Image sensor
D) Memory card slot
  • 36. When photographing very small fibers, which lens type ensures optimum magnification and detail?
A) Macro lens
B) Ultra-wide lens
C) Standard lens
D) Telephoto lens
  • 37. The investigator needs to minimize image noise while maintaining brightness. The most suitable action is—
A) Disable autofocus
B) Lower ISO and widen aperture
C) Raise ISO and narrow aperture
D) Increase shutter speed
  • 38. When using a manual/analogue camera in a dim room, which adjustment compensates for the absence of digital ISO controls?
A) Changing film advance lever
B) Selecting higher ASA film
C) Rotating memory dial
D) Adjusting lens mount
  • 39. A wide-angle lens produces slight edge distortion in scene photos. How may this affect forensic interpretation?
A) May misrepresent the distance between objects
B) May remove shadow details entirely
C) May shift color temperature drastically
D) May increase exposure stability
  • 40. A camera shows blurry close-up images despite proper lighting. Review indicates the photographer used a telephoto lens at minimum focusing distance. What is the likely cause?
A) Image sensor malfunctioned
B) Shutter curtain failed to synchronize
C) Telephoto lenses cannot capture contrast
D) Minimum focusing distance exceeded
  • 41. Which principle best explains why forensic chemists must use validated analytical procedures when examining seized chemical evidence?
A) To allow investigators to bypass the chain of custody
B) To ensure evidence is stored in climate-controlled facilities
C) To prevent the need for confirmatory testing
D) To guarantee results are reproducible and legally defensible
  • 42. The significance of toxicological findings in court primarily depends on which factor?
A) The financial value of the toxic substance detected
B) The popularity of the analytical instrument used
C) The interpretation of toxin concentration relative to physiological effects
D) The quantity of samples submitted by the investigator
  • 43. Which statement correctly differentiates preliminary from confirmatory tests in forensic chemistry?
A) Confirmatory tests rely on color changes, while preliminary tests use instrumentation
B) Preliminary tests are presumptive, while confirmatory tests specifically identify substances
C) Preliminary tests permanently identify a substance, while confirmatory tests only screen
D) Preliminary tests require accreditation, while confirmatory tests do not
  • 44. A crime scene technician performs a Kastle-Meyer test on a red stain and obtains a rapid pink color change. What is the MOST appropriate next step to ensure admissibility?
A) Collect only photographs since the test already confirmed blood
B) Conclude immediately that the stain is human blood
C) Disregard the sample due to possible contamination
D) Perform a confirmatory test, such as a Takayama or Teichmann test
  • 45. During the collection of semen evidence on fabric, which procedure BEST preserves its forensic value?
A) Folding the fabric tightly to secure the stain
B) Air-drying the fabric and placing it in a breathable paper container
C) Packaging the moist fabric in plastic to prevent air exposure
D) Applying heat to accelerate drying before packaging`
  • 46. While collecting glass fragments from a hit-and-run scene, which action MOST ensures accurate comparative analysis?
A) Separating fragments by size and origin before sealing
B) Cleaning the fragments with water before packaging
C) Mixing all fragments from different areas into one container
D) Placing fragments into cotton-filled plastic bags to minimize noise
  • 47. A victim is suspected of poisoning from an organophosphate pesticide. Which treatment is MOST appropriate to administer based on toxicological principles?
A) Activated charcoal only
B) High-dose vitamin K therapy
C) Sodium bicarbonate infusion
D) Atropine with pralidoxime (2-PAM)
  • 48. A forensic toxicologist must distinguish between cyanide poisoning and carbon monoxide poisoning. Which comparison is MOST forensically relevant?
A) Cyanide inhibits cellular respiration, while carbon monoxide forms carboxyhemoglobin
B) Cyanide causes cherry-red skin, while carbon monoxide does not
C) Carbon monoxide smells like almonds, while cyanide has no odor
D) Carbon monoxide poisoning typically changes blood to greenish color
  • 49. Which of the following is classified as a public document?
A) A personal diary
B) A notarized affidavit
C) A handwritten personal letter
D) A company memo
  • 50. Which equipment is primarily used to detect indented writing on a questioned document?
A) IR lamp
B) ESDA
C) Stereomicroscope
D) VSC
  • 51. A document examiner uses an infrared light source to evaluate a questioned contract. Which issue is this technique MOST suited to detect?
A) Chemical erasures or overwritten ink
B) Pen pressure inconsistencies
C) Paper fiber uniqueness
D) The presence of signature tremors
  • 52. A faded receipt is examined using a Video Spectral Comparator. What is the main advantage of this tool?
A) It measures paper thickness with high precision
B) It detects the weight of ink residue
C) It magnifies handwriting strokes up to 1000x
D) It reveals erased or overwritten text using multi-spectral imaging
  • 53. An altered bank document shows mismatched ink under UV light. This discrepancy indicates:
A) The paper is of inferior quality
B) The document contains natural handwriting variation
C) Ink from different batches or pens was used
D) The writer used excessive pressure when signing
  • 54. A signature shows slow movement, tremors, and unnatural pauses. What type of forgery is MOST likely present?
A) Freehand imitation
B) Disguised signature
C) Natural variation
D) Forgery through tracing
  • 55. A questioned signature shows heavy pen pressure at the beginning and end of strokes, uncommon in the writer’s known samples. What does this suggest?
A) The writer was in a hurry
B) It is an authentic signature
C) The signature may be simulated
D) Ink used was incompatible
  • 56. A handwriting expert compares known and questioned writings. He observes the same unique pen lift pattern before the letter "t." What principle is being applied?
A) Individual characteristics
B) Line quality analysis
C) Class characteristics
D) Natural variation
  • 57. A check shows altered numbers where the original ink reacts differently under IR examination. What is the conclusion?
A) The lighting technique was incorrect
B) The ink was exposed to moisture
C) The paper is counterfeit
D) Alteration likely occurred
  • 58. A forged document shows uniform spacing and mechanical alignment in the signature. This is characteristic of:
A) Typewriter output
B) Signature stamp or machine signature
C) Simulation
D) Freehand forgery
  • 59. The examiner notices baseline drift and inconsistent slant in a questioned handwritten note. What does this BEST indicate?
A) A natural signature variation
B) Impairment or loss of motor control
C) Possible disguise attempt
D) Habitual writing behavior
  • 60. A suspect denies authorship of a document. The examiner requests "extended handwriting specimens." Why?
A) To determine paper density
B) To observe fatigue in writing
C) To obtain a sufficient range of natural variation
D) To assess quality of ink
  • 61. A contract shows two lines written with identical flow, pressure, and shading but different pen tips under microscopic view. What does this imply?
A) The writing is genuine
B) The writer used two pens intentionally
C) The paper absorbed ink unevenly
D) A mechanical copying method was used
  • 62. A signature appears genuine in line quality but contradicts the writer’s usual habit of connecting letters. Microscopic analysis shows deliberate stops between strokes. What is the most reasonable conclusion?
A) The signature is simulated
B) The ink has degraded over time
C) The signature is authentic with natural variation
D) The writer was under stress
  • 63. A banknote passes the watermark test but fails the UV fluorescence test. What does this contrast MOST likely indicate?
A) The UV lamp is defective
B) The note is genuine but old
C) It is a hybrid counterfeit using mixed materials
D) The security thread has naturally faded
  • 64. A suspected fake ID shows correct hologram placement but inconsistent microprinting under magnification. What is the strongest conclusion?
A) The document was damaged by moisture
B) The ID is authentic but worn out
C) The hologram was transferred from a real ID
D) Microprinting is naturally variable
  • 65. Which of the following is a primary physiological indicator used in polygraph examinations?
A) Skin conductance
B) Pupil dilation
C) Blood pressure
D) Eye color
  • 66. Polygraph accuracy can be significantly affected by which factor?
A) Subject’s favorite color
B) Length of examination only
C) Examiner skill and experience
D) Ambient room temperature only
  • 67. Why are control questions used in polygraph tests?
A) To determine the subject’s memory capacity
B) To confuse the subject and induce errors
C) To directly detect lies about the incident
D) To establish baseline physiological responses for comparison
  • 68. How can a subject’s psychological state affect polygraph accuracy?
A) It has no measurable effect
B) Anxiety or fear may exaggerate physiological responses
C) Only physical factors matter, not psychological
D) It improves the detection of deception automatically
  • 69. During which phase of polygraph examination is the subject first interviewed?
A) Control phase
B) In-test phase
C) Pre-test phase
D) Post-test phase
  • 70. A sudden spike in galvanic skin response is observed on the chart. This is likely recorded using:
A) Cardiograph
B) Thermometer
C) Pneumograph
D) Galvanometer
  • 71. If a subject reacts strongly to a control question but minimally to a relevant question, the examiner should:
A) Restart the entire test
B) Consider the relevant question deceptive
C) Ignore both responses
D) Consider the control response valid and relevant response non-deceptive
  • 72. Which polygraph component measures respiration?
A) Pneumograph
B) Computer software
C) Galvanometer
D) Cardio sensor
  • 73. What is the purpose of irrelevant questions in a polygraph test?
A) To establish baseline physiological responses
B) To confuse the subject
C) To directly confirm deception
D) To test memory retention
  • 74. How should chart markings be interpreted during evaluation?
A) Only by visual inspection
B) By ignoring baseline readings
C) By comparing responses to relevant, control, and irrelevant questions
D) Only using computer software
  • 75. A polygraph examiner notes inconsistent heart rate changes across all question types. The next step is:
A) Ask more irrelevant questions
B) Declare deception immediately
C) Ignore inconsistencies
D) Re-evaluate data and consider external factors
  • 76. An examiner observes that a subject’s physiological responses are unusually flat. Which evaluation is most appropriate?
A) Ignore the responses and continue
B) Increase the number of relevant questions
C) Consider possible countermeasures or medical conditions affecting accuracy
D) Conclude deception automatically
  • 77. A polygraph test shows strong responses to irrelevant questions but mild responses to relevant questions. What can be inferred?
A) Subject is likely deceptive
B) Subject is definitely truthful
C) Subject’s baseline responses are high, making relevant responses less conclusive
D) Examiner should add more control questions
  • 78. Comparing reactions to control and relevant questions helps the examiner to:
A) Measure subject’s memory accuracy
B) Determine the subject’s emotional intelligence
C) Analyze physiological deviation and detect deception
D) Predict subject’s future behavior
  • 79. Which instrument is primarily used to compare the striations on two bullets?
A) Comparison microscope
B) Ballistic chronograph
C) Caliper
D) Rifling gauge
  • 80. Why is photographing ballistic evidence before collection important at a crime scene?
A) It ensures visual documentation of position and condition
B) It prevents contamination of evidence
C) It identifies the firearm used
D) It helps in measuring rifling impressions
  • 81. During crime scene processing, which procedure ensures proper chain of custody?
A) Documenting every transfer and storage of evidence
B) Comparing bullets in the laboratory
C) Photographing the suspect
D) Testing the firearm immediately
  • 82. Which of the following best explains the role of ballistic evidence presentation in court?
A) To illustrate the relationship between firearms, bullets, and cartridge cases
B) To show expert’s opinion without physical exhibits
C) To determine the shooter’s intent
D) To demonstrate internal ballistics to the jury
  • 83. What is the main purpose of using a ballistic chronograph in firearm examination?
A) To document cartridge case markings
B) To measure bullet speed and trajectory
C) To identify firearm serial numbers
D) To compare rifling impressions
  • 84. Which precaution is essential when presenting a firearm in court?
A) Removing all ammunition and rendering it safe
B) Testing bullets in front of the jury
C) Disassembling the firearm in open court
D) Loading the firearm to demonstrate firing
  • 85. A bullet recovered from a crime scene has rifling impressions matching a suspect’s firearm. This analysis demonstrates:
A) Terminal ballistics
B) Internal ballistics
C) Class characteristics
D) Individual characteristics
  • 86. A revolver is classified under which type of firearm?
A) Rifle
B) Shotgun
C) Handgun
D) Machine gun
  • 87. Which part of ammunition ignites the gunpowder when struck?
A) Cartridge case
B) Bullet
C) Primer
D) Firing pin
  • 88. Determining the trajectory of a bullet after it leaves the barrel is an example of:
A) Forensic ballistics
B) External ballistics
C) Terminal ballistics
D) Internal ballistics
  • 89. A fired cartridge case exhibits unique marks from the extractor and ejector. These are examples of:
A) Internal ballistics
B) Ammunition design
C) Individual characteristics
D) Class characteristics
  • 90. Identifying the make and model of a firearm based on caliber and rifling is an example of:
A) Terminal ballistics
B) Class characteristics
C) Individual characteristics
D) External ballistics
  • 91. Which branch of ballistics studies the effect of a bullet on a target?
A) External ballistics
B) Terminal ballistics
C) Internal ballistics
D) Forensic ballistics
  • 92. A semi-automatic rifle is fired, and the bullet path is traced to a tree. This investigation falls under:
A) Firearm classification
B) Internal ballistics
C) External ballistics
D) Terminal ballistics
  • 93. Which ammunition component determines the bullet’s size and fit within the barrel?
A) Cartridge case
B) Gunpowder
C) Bullet
D) Primer
  • 94. An expert concludes that multiple bullets came from the same firearm after analysis. This conclusion is most critical for:
A) Establishing individual characteristics
B) Assessing external ballistics
C) Evaluating firearm classification
D) Determining class characteristics
  • 95. What is the safest way to collect a firearm at a crime scene?
A) Hand it to anyone nearby
B) Keep it loaded while packaging
C) Remove ammunition and secure the firearm
D) Test fire before collection
  • 96. Why is assigning identification numbers to bullets and cartridge cases essential?
A) To determine firearm make and model
B) To measure bullet velocity accurately
C) To maintain chain of custody and avoid confusion
D) To assess terminal ballistics
  • 97. During evidence preservation, why must firearms be stored in controlled environments?
A) To prevent corrosion and preserve markings
B) To load them for demonstration
C) To test them before court
D) To analyze gunpowder separately
  • 98. Which factor is critical when handling fired cartridge cases to prevent contamination?
A) Polishing them for clarity
B) Wearing gloves and using appropriate packaging
C) Keeping them in open air
D) Cleaning them immediately
  • 99. You are tasked to create a forensic report for court presentation on a complex case involving multiple types of evidence. Which of the following approaches best ensures the report is both legally defensible and scientifically rigorous?
A) Limit technical explanations to avoid confusing the court.
B) Organize the report systematically, include all findings, and provide clear interpretations.
C) Include only results that support the prosecution’s case to simplify reading.
D) Use highly technical language throughout to demonstrate expertise.
  • 100. While handling a chemical sample in the laboratory, you notice a minor spill. What is the most appropriate immediate action according to standard laboratory safety procedures?
A) Contain and clean the spill following the laboratory’s spill protocol while wearing proper PPE.
B) Call security personnel to remove the chemical immediately.
C) Continue the experiment and report the spill after finishing.
D) Evacuate the laboratory and leave the spill unattended.
Created with That Quiz — where test making and test taking are made easy for math and other subject areas.