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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 change shape with age
C) Teeth resist decomposition and extreme heat
D) Teeth regenerate after severe trauma
  • 2. The Henry FBI Classification System primarily serves what purpose?
A) To organize fingerprint cards for retrieval
B) To measure ridge density
C) To classify latent prints at crime scenes
D) To detect forged fingerprints
  • 3. Why is dental charting superior during mass fatality incidents?
A) Dental charts contain compulsory genetic markers
B) It requires no prior dental records
C) Dental features rarely match across victims
D) Dentition is highly resistant to post-mortem damage
  • 4. In the Henry FBI system, what is the role of the Secondary Classification?
A) It identifies Level 3 pore characteristics
B) It classifies latent prints with insufficient ridge flow
C) It determines which fingerprints are suitable for database entry
D) It refines the filing sequence using ridge patterns on index fingers
  • 5. Which of the following best describes the purpose of descriptive biometric analysis (DBA)?
A) To measure body temperature variations post-mortem
B) To match physical traits when friction ridges are unavailable
C) To analyze DNA in partially decomposed bodies
D) To categorize fingerprints by their whorl values
  • 6. Why must classified fingerprint cards be arranged in numerical order?
A) It ensures standardized filing and efficient retrieval
B) It prevents contamination of fingerprint ink
C) It segregates fingerprints by ethnicity and age
D) It allows automatic destruction of old records
  • 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 a whorl pattern
C) As an arch pattern
D) As pattern-indeterminate
  • 8. A fingerprint with two deltas and circular ridge flow should be classified as a:
A) Tented arch
B) Radial loop
C) Composite pattern
D) Plain whorl
  • 9. Two prints share equal ridge counts but differ significantly in ridge flow direction. What should the examiner apply?
A) Principle of permanence
B) Principle of individuality
C) Ridge density standard
D) Ridge count principle
  • 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) Ignore minutiae and classify using pattern shape only
C) Reject the print based solely on the pattern
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) Divergence
B) Permanence
C) Multiplicity
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 belong to the same individual because ridge endings match
B) They are inconclusive due to lack of Level 1 detail
C) They originate from different individuals based on Level 3 differences
D) They can be considered identical after applying ridge counting
  • 13. A corpse has severely dried fingers. What method should be applied before taking prints?
A) Apply magnetic powder
B) Use iodine fuming before rolling
C) Cut the finger and discard the skin
D) Use rehydration or tissue-builder injection
  • 14. You must immediately develop latent prints on a smooth glass surface. What method is most suitable?
A) Iodine fuming
B) Ninhydrin
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) Use only plain impressions instead of rolled
C) Roll the finger faster to limit distortion
D) Increase pressure to improve contrast
  • 16. A latent print on porous paper requires chemical development. Which sequence is best?
A) Superglue → black powder → ALS
B) Ninhydrin → DFO → silver nitrate as needed
C) Powder → cyanoacrylate → magnetic powder
D) DFO → ninhydrin → water rinse
  • 17. A latent print on rough, uneven wood must be preserved. What lifting method is appropriate?
A) Ink transfer
B) Heat transfer sheet
C) Adhesive tape
D) Gel lifter
  • 18. After cyanoacrylate fuming, ridge detail appears faint. Why does applying powder improve visibility?
A) Cyanoacrylate prevents any further enhancement
B) Powder converts pores into visible white marks
C) Powder chemically dissolves cyanoacrylate
D) The hardened cyanoacrylate surface enhances powder adhesion
  • 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) Reviewing the first examiner’s notes first
B) Rejecting the first examiner’s conclusion automatically
C) Conducting blind and independent verification
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) Spectral Quality
B) Light Intensity
C) Composition
D) Exposure Value
  • 22. What type of flash produces illumination directly toward the subject without redirection?
A) Off-Camera Flash
B) Direct Flash
C) Rear-Curtain Flash
D) Bounce Flash
  • 23. Hard light creates which characteristic effect on forensic photographs?
A) Soft blending of edges
B) Increased shadow definition
C) Minimal textural visibility
D) Lower contrast on surfaces
  • 24. Bounce flash is preferred in indoor crime scenes because it—
A) Eliminates the need for a tripod
B) Uses stronger wattage for sharp detail
C) Enhances only reflective surfaces
D) Produces softer and more diffused illumination
  • 25. Why is color temperature crucial in forensic documentation?
A) It ensures faithful representation of evidence colors
B) It determines the shutter speed accuracy
C) It avoids lens distortion
D) It limits the depth of field range
  • 26. The rule of thirds primarily helps the investigator achieve what goal?
A) Increase flash synchronization
B) Ensure realistic color tones
C) Prevent overexposure
D) Improve visual clarity and subject positioning
  • 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) Use a slower shutter speed
C) Increase ISO to a higher value
D) Reduce ISO to 100
  • 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) Evidence Size Documentation
C) Background Neutralization
D) Exaggeration Prevention Rule
  • 29. You must photograph a shoeprint at an oblique angle. Which camera setting will best enhance subtle surface details?
A) High ISO, fast shutter
B) Small aperture, low ISO
C) Wide aperture, auto ISO
D) Slow shutter, high ISO
  • 30. In photographing a dark outdoor crime scene, which action maximizes proper exposure without altering evidence?
A) Increasing flash power directly at the evidence
B) Adjusting lens zoom to crop shadows
C) Moving the evidence closer to artificial light
D) Increasing shutter time using a tripod
  • 31. During medium-range shots, the photographer must capture evidence relative to fixed surroundings. This ensures—
A) Depth of field is minimized
B) Flash reflection is avoided
C) Light intensity remains constant
D) Scene orientation is established
  • 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) Use high ISO to enhance ambient background
C) Increase shutter speed to darken fluorescence
D) Disable macro mode to avoid magnification
  • 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) Slow shutter with diffused lighting
C) Narrow aperture with rear flash
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 may alter spatial relationships
B) Telephoto may distort the color temperature
C) Telephoto eliminates shadow accuracy
D) Wide-angle removes depth of field
  • 35. A digital camera fails to record images despite allowing shutter release. Which part should be checked FIRST?
A) Image sensor
B) ISO control
C) Memory card slot
D) Lens focusing ring
  • 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) Disable autofocus
B) Raise ISO and narrow aperture
C) Increase shutter speed
D) Lower ISO and widen aperture
  • 38. When using a manual/analogue camera in a dim room, which adjustment compensates for the absence of digital ISO controls?
A) Selecting higher ASA film
B) Adjusting lens mount
C) Changing film advance lever
D) Rotating memory dial
  • 39. A wide-angle lens produces slight edge distortion in scene photos. How may this affect forensic interpretation?
A) May shift color temperature drastically
B) May remove shadow details entirely
C) May increase exposure stability
D) May misrepresent the distance between objects
  • 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) Telephoto lenses cannot capture contrast
B) Minimum focusing distance exceeded
C) Image sensor malfunctioned
D) Shutter curtain failed to synchronize
  • 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 popularity of the analytical instrument used
B) The financial value of the toxic substance detected
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) Preliminary tests require accreditation, while confirmatory tests do not
B) Preliminary tests are presumptive, while confirmatory tests specifically identify substances
C) Confirmatory tests rely on color changes, while preliminary tests use instrumentation
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) Collect only photographs since the test already confirmed blood
B) Perform a confirmatory test, such as a Takayama or Teichmann test
C) Conclude immediately that the stain is human blood
D) Disregard the sample due to possible contamination
  • 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) Separating fragments by size and origin before sealing
B) Cleaning the fragments with water before packaging
C) Placing fragments into cotton-filled plastic bags to minimize noise
D) Mixing all fragments from different areas into one container
  • 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) High-dose vitamin K therapy
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) Carbon monoxide poisoning typically changes blood to greenish color
C) Cyanide causes cherry-red skin, while carbon monoxide does not
D) Carbon monoxide smells like almonds, while cyanide has no odor
  • 49. Which of the following is classified as a public document?
A) A personal diary
B) A notarized affidavit
C) A company memo
D) A handwritten personal letter
  • 50. Which equipment is primarily used to detect indented writing on a questioned document?
A) IR lamp
B) ESDA
C) VSC
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) Pen pressure inconsistencies
C) The presence of signature tremors
D) Chemical erasures or overwritten ink
  • 52. A faded receipt is examined using a Video Spectral Comparator. What is the main advantage of this tool?
A) It magnifies handwriting strokes up to 1000x
B) It measures paper thickness with high precision
C) It detects the weight of ink residue
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 document contains natural handwriting variation
B) The paper is of inferior quality
C) The writer used excessive pressure when signing
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) Forgery through tracing
B) Disguised signature
C) Freehand imitation
D) Natural variation
  • 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) It is an authentic signature
B) The writer was in a hurry
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) Natural variation
C) Class characteristics
D) Line quality analysis
  • 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) Simulation
C) Typewriter output
D) Freehand forgery
  • 59. The examiner notices baseline drift and inconsistent slant in a questioned handwritten note. What does this BEST indicate?
A) Habitual writing behavior
B) Impairment or loss of motor control
C) A natural signature variation
D) Possible disguise attempt
  • 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 paper absorbed ink unevenly
B) The writer used two pens intentionally
C) The writing is genuine
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 writer was under stress
B) The ink has degraded over time
C) The signature is authentic with natural variation
D) The signature is simulated
  • 63. A banknote passes the watermark test but fails the UV fluorescence test. What does this contrast MOST likely indicate?
A) It is a hybrid counterfeit using mixed materials
B) The security thread has naturally faded
C) The note is genuine but old
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) Microprinting is naturally variable
C) The document was damaged by moisture
D) The hologram was transferred from a real ID
  • 65. Which of the following is a primary physiological indicator used in polygraph examinations?
A) Eye color
B) Skin conductance
C) Blood pressure
D) Pupil dilation
  • 66. Polygraph accuracy can be significantly affected by which factor?
A) Length of examination only
B) Examiner skill and experience
C) Subject’s favorite color
D) Ambient room temperature only
  • 67. Why are control questions used in polygraph tests?
A) To confuse the subject and induce errors
B) To directly detect lies about the incident
C) To determine the subject’s memory capacity
D) To establish baseline physiological responses for comparison
  • 68. How can a subject’s psychological state affect polygraph accuracy?
A) It improves the detection of deception automatically
B) Only physical factors matter, not psychological
C) Anxiety or fear may exaggerate physiological responses
D) It has no measurable effect
  • 69. During which phase of polygraph examination is the subject first interviewed?
A) Post-test phase
B) Pre-test phase
C) In-test phase
D) Control phase
  • 70. A sudden spike in galvanic skin response is observed on the chart. This is likely recorded using:
A) Galvanometer
B) Cardiograph
C) Pneumograph
D) Thermometer
  • 71. If a subject reacts strongly to a control question but minimally to a relevant question, the examiner should:
A) Consider the control response valid and relevant response non-deceptive
B) Consider the relevant question deceptive
C) Ignore both responses
D) Restart the entire test
  • 72. Which polygraph component measures respiration?
A) Computer software
B) Pneumograph
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 directly confirm deception
C) To test memory retention
D) To confuse the subject
  • 74. How should chart markings be interpreted during evaluation?
A) By comparing responses to relevant, control, and irrelevant questions
B) Only by visual inspection
C) By ignoring baseline readings
D) Only using computer software
  • 75. A polygraph examiner notes inconsistent heart rate changes across all question types. The next step is:
A) Ignore inconsistencies
B) Declare deception immediately
C) Ask more irrelevant questions
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) 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’s baseline responses are high, making relevant responses less conclusive
B) Subject is likely deceptive
C) Examiner should add more control questions
D) Subject is definitely truthful
  • 78. Comparing reactions to control and relevant questions helps the examiner to:
A) Analyze physiological deviation and detect deception
B) Determine the subject’s emotional intelligence
C) Predict subject’s future behavior
D) Measure subject’s memory accuracy
  • 79. Which instrument is primarily used to compare the striations on two bullets?
A) Comparison microscope
B) Rifling gauge
C) Caliper
D) Ballistic chronograph
  • 80. Why is photographing ballistic evidence before collection important at a crime scene?
A) It ensures visual documentation of position and condition
B) It identifies the firearm used
C) It prevents contamination of evidence
D) It helps in measuring rifling impressions
  • 81. During crime scene processing, which procedure ensures proper chain of custody?
A) Comparing bullets in the laboratory
B) Testing the firearm immediately
C) Documenting every transfer and storage of evidence
D) Photographing the suspect
  • 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 determine the shooter’s intent
C) To illustrate the relationship between firearms, bullets, and cartridge cases
D) To show expert’s opinion without physical exhibits
  • 83. What is the main purpose of using a ballistic chronograph in firearm examination?
A) To identify firearm serial numbers
B) To compare rifling impressions
C) To measure bullet speed and trajectory
D) To document cartridge case markings
  • 84. Which precaution is essential when presenting a firearm in court?
A) Loading the firearm to demonstrate firing
B) Testing bullets in front of the jury
C) Removing all ammunition and rendering it safe
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) Individual characteristics
B) Internal ballistics
C) Class characteristics
D) Terminal ballistics
  • 86. A revolver is classified under which type of firearm?
A) Handgun
B) Rifle
C) Shotgun
D) Machine gun
  • 87. Which part of ammunition ignites the gunpowder when struck?
A) Cartridge case
B) Primer
C) Firing pin
D) Bullet
  • 88. Determining the trajectory of a bullet after it leaves the barrel is an example of:
A) Forensic ballistics
B) External ballistics
C) Internal ballistics
D) Terminal ballistics
  • 89. A fired cartridge case exhibits unique marks from the extractor and ejector. These are examples of:
A) Class characteristics
B) Internal ballistics
C) Ammunition design
D) Individual characteristics
  • 90. Identifying the make and model of a firearm based on caliber and rifling is an example of:
A) External ballistics
B) Terminal ballistics
C) Class characteristics
D) Individual characteristics
  • 91. Which branch of ballistics studies the effect of a bullet on a target?
A) Terminal ballistics
B) Internal ballistics
C) Forensic ballistics
D) External 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) Terminal ballistics
D) Internal ballistics
  • 93. Which ammunition component determines the bullet’s size and fit within the barrel?
A) Gunpowder
B) Cartridge case
C) Primer
D) Bullet
  • 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) Determining class characteristics
C) Establishing individual characteristics
D) Assessing external ballistics
  • 95. What is the safest way to collect a firearm at a crime scene?
A) Test fire before collection
B) Keep it loaded while packaging
C) Remove ammunition and secure the firearm
D) Hand it to anyone nearby
  • 96. Why is assigning identification numbers to bullets and cartridge cases essential?
A) To measure bullet velocity accurately
B) To determine firearm make and model
C) To assess terminal ballistics
D) To maintain chain of custody and avoid confusion
  • 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) Cleaning them immediately
C) Keeping them in open air
D) Wearing gloves and using appropriate packaging
  • 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) Organize the report systematically, include all findings, and provide clear interpretations.
B) Use highly technical language throughout to demonstrate expertise.
C) Include only results that support the prosecution’s case to simplify reading.
D) Limit technical explanations to avoid confusing the court.
  • 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) Evacuate the laboratory and leave the spill unattended.
B) Continue the experiment and report the spill after finishing.
C) Contain and clean the spill following the laboratory’s spill protocol while wearing proper PPE.
D) Call security personnel to remove the chemical immediately.
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