FCTOXI
  • 1. Which chemical test can differentiate between original and altered ink entries?
A) Density gradient test
B) Chromatographic
C) Paper aging test
D) Immersion refractive index test
  • 2. What is the primary purpose of the folding endurance test in paper analysis?
A) To test water absorption
B) To identify the paper manufacturer
C) To determine the paper's strength and durability
D) To detect embedded fibers
  • 3. When white light passes through a glass sample, the bending of light is most closely related to which property?
A) Refractive index
B) Color
C) Density
D) Thickness
  • 4. What fracture pattern cracks appear first and radiate from the point of impact?
A) Conchoidal
B) Compression cracks
C) Radial Cracks
D) Concentric Cracks
  • 5. A bullet passes through a glass pane, leaving two hole impressions with overlapping cracks. How do you determine the firing sequence?
A) The direction of bullet entry
B) The cracks of the first impact are interrupted by the second
C) By counting the cracks
D) The thickness of glass
  • 6. What metallurgical process involves removing layers from a metal surface to reveal tampered serial numbers?
A) Annealing
B) Molding
C) Etching
D) Electroplating
  • 7. Which alloy is commonly used to counterfeit coins by casting?
A) Lead Alloy
B) Aluminum alloy
C) Titanium alloy
D) Copper-zinc alloy
  • 8. Which soil component is most abundant in the Philippines and often relevant for forensic identification?
A) Organic humus
B) Quartz
C) Clay minerals like mica
D) Calcium carbonate
  • 9. Occupational dust on a suspect's clothing helps to
A) Confirm age
B) Reveal their place of work
C) Prove identity conclusively
D) Determine time of death
  • 10. .What casting material is preferred for delicate footwear impressions?
A) Wax
B) Dental stone
C) Sand
D) Plaster of Paris
  • 11. An ink that rapidly fades upon exposure to water in likely
A) Gallotanic ink
B) Anailine or nigrosine ink
C) Carbon ink
D) Metallic ink
  • 12. Which paper component confers water resistance?
A) Ash content
B) Cellulose
C) Rosin
D) Gelatin
  • 13. The term "compression mark" in the context of tool impression refers to
A) Deformation caused by a direct blow causing one strike mark
B) Impressions caused by friction
C) Linear scratches made by a saw
D) Multiple overlapping tool marks
  • 14. What is the forensic significance of a watermark?
A) It identifies the manufacturer and authenticity
B) It reveals ink composition
C) It detects forgery automatically
D) It indicates document age
  • 15. Radial cracks in glass form on the surface opposite the force of impact
A) False
B) True
  • 16. Laminated glass differs from tempered glass in that it
A) Shatters into tiny fragments
B) Has no forensic significance
C) Does not shatter easily due to an inner plastic interlayer
D) Is easily scratched
  • 17. How do forensic experts analyze soil samples attached to clothing?
A) Particle size, mineral content, organic elements
B) Color only
C) pH value alone
D) Water content
  • 18. The distinctiveness of footprints is most dependent on
A) Individualized wear patterns and ridge details
B) The shoe brand
C) The type of soil
D) Size only
  • 19. What is an important microscopic feature examiners look for in handwriting?
A) Paper texture
B) Signature length
C) Stroke direction, pressure variation, pen lifts or hesitations
D) Ink smell
  • 20. What is the best way to preserve a fragile ink signature for forensic analysis?
A) Flatten and laminate immediately
B) Apply chemicals to enhance visit
C) Allow drying them carefully protect with acid free paper
  • 21. What is the purpose of the flotation method in soil analysis
A) To identify soil color
B) To separate soil particles by density
C) To assess soil ph
D) To measure soil temperature
  • 22. Which test helps to distinguish paper sizing type
A) Chemical reaction(boiling nitric acid )
B) Peneration test
C) Density gradient test
D) Ink Chromatography
  • 23. What forensic advantage does spectrographic analysis provide
A) DNA Measures density
B) Visual identification
C) Isolates Dna
D) Elemental composition of trace materials
  • 24. Which factor complicates forensic comparison of glass Fragments
A) Color uniformily
B) Thickness uniformity
C) Similarity of refractive indices among common glasses
D) Surface smoothness
  • 25. Which gives the most reliable microscopy evidence of tool mark
A) Casting the impression
B) Photographic record alone
C) Visual inspection
D) Chemical treatment
  • 26. When examining ink for alterations, what physical sign is often looked for
A) Ink color uniformity
B) Indentation differences and overlapping strokes
C) Logo presence
D) Paper fold
  • 27. is dental stone preferred over plaster of Paris for casting?
A) It sets faster
B) its dries slower
C) It has superior mechanical strength and captures fine details
D) It is less expensive
  • 28. A forgery that imitates an individual's signature is called
A) Disguised writing
B) Traced writing
C) Simulated writing
D) Anonymous writing
  • 29. The presence of hematite in soil samples can indicate
A) Industrial contamination
B) Organic decomposition
C) Water pollution
D) High iron content useful for matching samples
  • 30. Which of these ink types is most stable and unlikely to fade over time?
A) India ink
B) Get ink
C) Aniline ink
D) Pencil mark
  • 31. Which test differentiate paper based on its ash content ?
A) Water absoration
B) Ink chromatography
C) Density gradient
D) Burn test
  • 32. Which is a common limitation of forensic soil comparsons?
A) Soil contains DNA
B) Soil is highly variable within a single location
C) Soil is impossible to analyze
  • 33. What does watermark visibility under transmitted light help establish?
A) Age of the content
B) Document size
C) Ink type
D) Paper authenticity and manufacturing source
  • 34. What is the significance of ink diffusion into paper fiber ?
A) It can complicate attempt to erase or after writing
B) It is irrelevant in forensic analysis
C) It only influences color
D) It makes forgery easier
  • 35. How is the fracture surface of glass described?
A) Smooth and shiny
B) Rellective
C) Rough, conchoidal (shell-shaped) in many cases
D) Flat and polished
  • 36. Which soil characteristic is most useful in identifying a geographic origin?
A) Clay mineral composition
B) Moisture content
C) Soil brightness
D) Odor
  • 37. Why is in chromatography valuable?
A) It determines paper age
B) It quantifies ink weight
C) It measures ink acidity
D) It separates ink components, to identify specific formulations
  • 38. Which print type is commonly used as evidence in criminal cases?
A) Footwear impressions
B) Air prints
C) Fingernail prints
D) Ink prints
  • 39. What is the typical microscopic structure forensic experts look for in soil?
A) Mineral particles and organic material
B) Water droplets
C) Clump size and shapes
D) Leaf fragments only
  • 40. An alteration on a document created by washing ink with chemicals is called
A) Obliteration
B) Erasure
C) Simulated writing
D) Tracing
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