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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 regenerate after severe trauma
C) Teeth resist decomposition and extreme heat
D) Teeth change shape with age
  • 2. The Henry FBI Classification System primarily serves what purpose?
A) To detect forged fingerprints
B) To organize fingerprint cards for retrieval
C) To classify latent prints at crime scenes
D) To measure ridge density
  • 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 measure body temperature variations post-mortem
B) To analyze DNA in partially decomposed bodies
C) To categorize fingerprints by their whorl values
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 segregates fingerprints by ethnicity and age
C) It prevents contamination of fingerprint ink
D) It ensures standardized filing and efficient retrieval
  • 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) Tented arch
B) Plain whorl
C) Radial loop
D) Composite pattern
  • 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) Principle of permanence
D) Ridge density standard
  • 10. A loop fingerprint shows ridge irregularities due to surface distortion. How should the examiner evaluate these irregularities?
A) Evaluate minutiae configuration rather than the overall loop pattern
B) Reject the print based solely on the pattern
C) Ignore minutiae and classify using pattern shape only
D) Convert the loop pattern into a whorl for easier analysis
  • 11. Which principle justifies the admissibility of fingerprint evidence in court due to its unchanging nature?
A) Universality
B) Permanence
C) Multiplicity
D) Divergence
  • 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 can be considered identical after applying ridge counting
B) They originate from different individuals based on Level 3 differences
C) They belong to the same individual because ridge endings match
D) They are inconclusive due to lack of Level 1 detail
  • 13. A corpse has severely dried fingers. What method should be applied before taking prints?
A) Use rehydration or tissue-builder injection
B) Cut the finger and discard the skin
C) Apply magnetic powder
D) Use iodine fuming before rolling
  • 14. You must immediately develop latent prints on a smooth glass surface. What method is most suitable?
A) Iodine fuming
B) Ninhydrin
C) Silver nitrate
D) Powder dusting
  • 15. A rolled impression shows smudging due to downward pressure. How should the technician correct this?
A) Use only plain impressions instead of rolled
B) Roll the finger faster to limit distortion
C) Increase pressure to improve contrast
D) Reduce pressure and allow natural rolling
  • 16. A latent print on porous paper requires chemical development. Which sequence is best?
A) DFO → ninhydrin → water rinse
B) Powder → cyanoacrylate → magnetic powder
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) Adhesive tape
B) Gel lifter
C) Ink transfer
D) Heat transfer sheet
  • 18. After cyanoacrylate fuming, ridge detail appears faint. Why does applying powder improve visibility?
A) The hardened cyanoacrylate surface enhances powder adhesion
B) Powder converts pores into visible white marks
C) Cyanoacrylate prevents any further enhancement
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) Immediately declare the print an identification
C) Decide whether the print is suitable before moving on
D) Proceed directly to comparison
  • 20. A verifier receives a fingerprint case already evaluated by another examiner. What method ensures objectivity?
A) Rejecting the first examiner’s conclusion automatically
B) Conducting blind and independent verification
C) Reviewing the first examiner’s notes first
D) Reprocessing the evidence using different chemicals
  • 21. Which principle of photography refers to arranging visual elements to create a balanced and meaningful image?
A) Exposure Value
B) Composition
C) Light Intensity
D) Spectral Quality
  • 22. What type of flash produces illumination directly toward the subject without redirection?
A) Bounce Flash
B) Rear-Curtain Flash
C) Off-Camera Flash
D) Direct Flash
  • 23. Hard light creates which characteristic effect on forensic photographs?
A) Lower contrast on surfaces
B) Soft blending of edges
C) Minimal textural visibility
D) Increased shadow definition
  • 24. Bounce flash is preferred in indoor crime scenes because it—
A) Enhances only reflective surfaces
B) Produces softer and more diffused illumination
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 avoids lens distortion
B) It ensures faithful representation of evidence colors
C) It limits the depth of field range
D) It determines the shutter speed accuracy
  • 26. The rule of thirds primarily helps the investigator achieve what goal?
A) Prevent overexposure
B) Improve visual clarity and subject positioning
C) Increase flash synchronization
D) Ensure realistic color tones
  • 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) Exaggeration Prevention Rule
B) Background Neutralization
C) Evidence Size Documentation
D) Horizontal Composition Rule
  • 29. You must photograph a shoeprint at an oblique angle. Which camera setting will best enhance subtle surface details?
A) Small aperture, low ISO
B) High ISO, fast shutter
C) Slow shutter, high ISO
D) Wide aperture, auto 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 shutter time using a tripod
D) Increasing flash power directly at the evidence
  • 31. During medium-range shots, the photographer must capture evidence relative to fixed surroundings. This ensures—
A) Scene orientation is established
B) Flash reflection is avoided
C) Depth of field is minimized
D) Light intensity remains constant
  • 32. When capturing fingerprints using an alternate light source, the photographer must adjust the camera to—
A) Match the wavelength with white balance settings
B) Disable macro mode to avoid magnification
C) Use high ISO to enhance ambient background
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) Narrow aperture with rear flash
C) Slow shutter with diffused lighting
D) High ISO and wide aperture
  • 34. Two investigators photographed the same bullet trajectory. One used wide-angle; the other used telephoto. Which issue may arise in court?
A) Wide-angle removes depth of field
B) Telephoto may distort the color temperature
C) Telephoto eliminates shadow accuracy
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) ISO control
B) Lens focusing ring
C) Image sensor
D) Memory card slot
  • 36. When photographing very small fibers, which lens type ensures optimum magnification and detail?
A) Telephoto lens
B) Macro lens
C) Ultra-wide lens
D) Standard lens
  • 37. The investigator needs to minimize image noise while maintaining brightness. The most suitable action is—
A) Lower ISO and widen aperture
B) Disable autofocus
C) Increase shutter speed
D) Raise ISO and narrow aperture
  • 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) Adjusting lens mount
C) Rotating memory dial
D) Selecting higher ASA film
  • 39. A wide-angle lens produces slight edge distortion in scene photos. How may this affect forensic interpretation?
A) May increase exposure stability
B) May shift color temperature drastically
C) May misrepresent the distance between objects
D) May remove shadow details entirely
  • 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) Shutter curtain failed to synchronize
B) Image sensor malfunctioned
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 ensure evidence is stored in climate-controlled facilities
B) To allow investigators to bypass the chain of custody
C) To guarantee results are reproducible and legally defensible
D) To prevent the need for confirmatory testing
  • 42. The significance of toxicological findings in court primarily depends on which factor?
A) The quantity of samples submitted by the investigator
B) The popularity of the analytical instrument used
C) The interpretation of toxin concentration relative to physiological effects
D) The financial value of the toxic substance detected
  • 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 require accreditation, while confirmatory tests do not
C) Preliminary tests are presumptive, while confirmatory tests specifically identify substances
D) Preliminary tests permanently identify a substance, while confirmatory tests only screen
  • 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) Conclude immediately that the stain is human blood
B) Disregard the sample due to possible contamination
C) Collect only photographs since the test already confirmed blood
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) Air-drying the fabric and placing it in a breathable paper container
B) Folding the fabric tightly to secure the stain
C) Applying heat to accelerate drying before packaging`
D) Packaging the moist fabric in plastic to prevent air exposure
  • 46. While collecting glass fragments from a hit-and-run scene, which action MOST ensures accurate comparative analysis?
A) Mixing all fragments from different areas into one container
B) Separating fragments by size and origin before sealing
C) Placing fragments into cotton-filled plastic bags to minimize noise
D) Cleaning the fragments with water before packaging
  • 47. A victim is suspected of poisoning from an organophosphate pesticide. Which treatment is MOST appropriate to administer based on toxicological principles?
A) Sodium bicarbonate infusion
B) Activated charcoal only
C) Atropine with pralidoxime (2-PAM)
D) High-dose vitamin K therapy
  • 48. A forensic toxicologist must distinguish between cyanide poisoning and carbon monoxide poisoning. Which comparison is MOST forensically relevant?
A) Carbon monoxide poisoning typically changes blood to greenish color
B) Cyanide causes cherry-red skin, while carbon monoxide does not
C) Carbon monoxide smells like almonds, while cyanide has no odor
D) Cyanide inhibits cellular respiration, while carbon monoxide forms carboxyhemoglobin
  • 49. Which of the following is classified as a public document?
A) A notarized affidavit
B) A handwritten personal letter
C) A company memo
D) A personal diary
  • 50. Which equipment is primarily used to detect indented writing on a questioned document?
A) IR lamp
B) VSC
C) ESDA
D) Stereomicroscope
  • 51. A document examiner uses an infrared light source to evaluate a questioned contract. Which issue is this technique MOST suited to detect?
A) Paper fiber uniqueness
B) Chemical erasures or overwritten ink
C) The presence of signature tremors
D) Pen pressure inconsistencies
  • 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 reveals erased or overwritten text using multi-spectral imaging
C) It detects the weight of ink residue
D) It magnifies handwriting strokes up to 1000x
  • 53. An altered bank document shows mismatched ink under UV light. This discrepancy indicates:
A) The writer used excessive pressure when signing
B) The paper is of inferior quality
C) The document contains natural handwriting variation
D) Ink from different batches or pens was used
  • 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 signature may be simulated
B) It is an authentic signature
C) Ink used was incompatible
D) The writer was in a hurry
  • 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) Class characteristics
C) Line quality analysis
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 paper is counterfeit
C) The ink was exposed to moisture
D) Alteration likely occurred
  • 58. A forged document shows uniform spacing and mechanical alignment in the signature. This is characteristic of:
A) Signature stamp or machine signature
B) Typewriter output
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) Impairment or loss of motor control
B) Possible disguise attempt
C) A natural signature variation
D) Habitual writing behavior
  • 60. A suspect denies authorship of a document. The examiner requests "extended handwriting specimens." Why?
A) To observe fatigue in writing
B) To determine paper density
C) To assess quality of ink
D) To obtain a sufficient range of natural variation
  • 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 paper absorbed ink unevenly
C) A mechanical copying method was used
D) The writer used two pens intentionally
  • 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 signature is authentic with natural variation
C) The writer was under stress
D) The ink has degraded over time
  • 63. A banknote passes the watermark test but fails the UV fluorescence test. What does this contrast MOST likely indicate?
A) The security thread has naturally faded
B) The note is genuine but old
C) It is a hybrid counterfeit using mixed materials
D) The UV lamp is defective
  • 64. A suspected fake ID shows correct hologram placement but inconsistent microprinting under magnification. What is the strongest conclusion?
A) The ID is authentic but worn out
B) The document was damaged by moisture
C) Microprinting is naturally variable
D) The hologram was transferred from a real ID
  • 65. Which of the following is a primary physiological indicator used in polygraph examinations?
A) Skin conductance
B) Pupil dilation
C) Eye color
D) Blood pressure
  • 66. Polygraph accuracy can be significantly affected by which factor?
A) Subject’s favorite color
B) Ambient room temperature only
C) Examiner skill and experience
D) Length of examination only
  • 67. Why are control questions used in polygraph tests?
A) To determine the subject’s memory capacity
B) To establish baseline physiological responses for comparison
C) To directly detect lies about the incident
D) To confuse the subject and induce errors
  • 68. How can a subject’s psychological state affect polygraph accuracy?
A) Only physical factors matter, not psychological
B) Anxiety or fear may exaggerate physiological responses
C) It improves the detection of deception automatically
D) It has no measurable effect
  • 69. During which phase of polygraph examination is the subject first interviewed?
A) Post-test phase
B) Control phase
C) Pre-test phase
D) In-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) Ignore both responses
B) Consider the control response valid and relevant response non-deceptive
C) Consider the relevant question deceptive
D) Restart the entire test
  • 72. Which polygraph component measures respiration?
A) Computer software
B) Galvanometer
C) Pneumograph
D) Cardio sensor
  • 73. What is the purpose of irrelevant questions in a polygraph test?
A) To directly confirm deception
B) To establish baseline physiological responses
C) To confuse the subject
D) To test memory retention
  • 74. How should chart markings be interpreted during evaluation?
A) Only by visual inspection
B) By comparing responses to relevant, control, and irrelevant questions
C) Only using computer software
D) By ignoring baseline readings
  • 75. A polygraph examiner notes inconsistent heart rate changes across all question types. The next step is:
A) Declare deception immediately
B) Ignore inconsistencies
C) Re-evaluate data and consider external factors
D) Ask more irrelevant questions
  • 76. An examiner observes that a subject’s physiological responses are unusually flat. Which evaluation is most appropriate?
A) Consider possible countermeasures or medical conditions affecting accuracy
B) Conclude deception automatically
C) Increase the number of relevant questions
D) Ignore the responses and continue
  • 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) Examiner should add more control questions
C) Subject is definitely truthful
D) Subject’s baseline responses are high, making relevant responses less conclusive
  • 78. Comparing reactions to control and relevant questions helps the examiner to:
A) Determine the subject’s emotional intelligence
B) Measure subject’s memory accuracy
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) Caliper
B) Comparison microscope
C) Ballistic chronograph
D) Rifling gauge
  • 80. Why is photographing ballistic evidence before collection important at a crime scene?
A) It prevents contamination of evidence
B) It identifies the firearm used
C) It helps in measuring rifling impressions
D) It ensures visual documentation of position and condition
  • 81. During crime scene processing, which procedure ensures proper chain of custody?
A) Testing the firearm immediately
B) Photographing the suspect
C) Comparing bullets in the laboratory
D) Documenting every transfer and storage of evidence
  • 82. Which of the following best explains the role of ballistic evidence presentation in court?
A) To demonstrate internal ballistics to the jury
B) To illustrate the relationship between firearms, bullets, and cartridge cases
C) To show expert’s opinion without physical exhibits
D) To determine the shooter’s intent
  • 83. What is the main purpose of using a ballistic chronograph in firearm examination?
A) To compare rifling impressions
B) To document cartridge case markings
C) To measure bullet speed and trajectory
D) To identify firearm serial numbers
  • 84. Which precaution is essential when presenting a firearm in court?
A) Removing all ammunition and rendering it safe
B) Loading the firearm to demonstrate firing
C) Testing bullets in front of the jury
D) Disassembling the firearm in open court
  • 85. A bullet recovered from a crime scene has rifling impressions matching a suspect’s firearm. This analysis demonstrates:
A) Class characteristics
B) Individual characteristics
C) Internal ballistics
D) Terminal ballistics
  • 86. A revolver is classified under which type of firearm?
A) Handgun
B) Rifle
C) Machine gun
D) Shotgun
  • 87. Which part of ammunition ignites the gunpowder when struck?
A) Cartridge case
B) Bullet
C) Firing pin
D) Primer
  • 88. Determining the trajectory of a bullet after it leaves the barrel is an example of:
A) Terminal ballistics
B) Internal ballistics
C) Forensic ballistics
D) External ballistics
  • 89. A fired cartridge case exhibits unique marks from the extractor and ejector. These are examples of:
A) Individual characteristics
B) Ammunition design
C) Class characteristics
D) Internal ballistics
  • 90. Identifying the make and model of a firearm based on caliber and rifling is an example of:
A) Terminal ballistics
B) External ballistics
C) Class characteristics
D) Individual characteristics
  • 91. Which branch of ballistics studies the effect of a bullet on a target?
A) External ballistics
B) Forensic ballistics
C) Internal ballistics
D) Terminal 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) External ballistics
C) Internal ballistics
D) Terminal ballistics
  • 93. Which ammunition component determines the bullet’s size and fit within the barrel?
A) Cartridge case
B) Bullet
C) Primer
D) Gunpowder
  • 94. An expert concludes that multiple bullets came from the same firearm after analysis. This conclusion is most critical for:
A) Evaluating firearm classification
B) Assessing external ballistics
C) Establishing individual characteristics
D) Determining class characteristics
  • 95. What is the safest way to collect a firearm at a crime scene?
A) Remove ammunition and secure the firearm
B) Hand it to anyone nearby
C) Keep it loaded while packaging
D) Test fire before collection
  • 96. Why is assigning identification numbers to bullets and cartridge cases essential?
A) To measure bullet velocity accurately
B) To assess terminal ballistics
C) To maintain chain of custody and avoid confusion
D) To determine firearm make and model
  • 97. During evidence preservation, why must firearms be stored in controlled environments?
A) To analyze gunpowder separately
B) To test them before court
C) To load them for demonstration
D) To prevent corrosion and preserve markings
  • 98. Which factor is critical when handling fired cartridge cases to prevent contamination?
A) Wearing gloves and using appropriate packaging
B) Keeping them in open air
C) Polishing them for clarity
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) Use highly technical language throughout to demonstrate expertise.
B) Include only results that support the prosecution’s case to simplify reading.
C) Limit technical explanations to avoid confusing the court.
D) Organize the report systematically, include all findings, and provide clear interpretations.
  • 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) Continue the experiment and report the spill after finishing.
B) Evacuate the laboratory and leave the spill unattended.
C) Call security personnel to remove the chemical immediately.
D) Contain and clean the spill following the laboratory’s spill protocol while wearing proper PPE.
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