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