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