- 1. Wood’s metal is made of B, Pb, Sn, and Cd. What is the amount in percentage of those elements in the materials?
A) Sn 12.5%, B 25%, Cd 12.5%, Pb 50%
B) 12%, Sn 25%, Pb 12.5%, Cd 50%
C) Pb 50%, Cd 12.5%, Sn 25%, B 12.5%
D) Cd 12.5%, Pb 25%, B 50%, Sn 12.5%
- 2. According to Wood’s metal composition and to the periodic table of elements, Cd is a symbol for what element?
A) Cudium
B) Carbon Dioxide
C) Calcium
D) Cadmium
- 3. Variety of solder with melting point of 60°C to 70°C.
A) Woods metal
B) Negocoll
C) Celerity
D) Alloy
- 4. Adding ½ teaspoonful of salt to plaster of Paris results in what effect?
A) Retarding
B) Hastening
C) Hardening
D) Accelerating
- 5. In tool impression and tire impression, what kind of casting material is best for it?
A) Plaster of Paris
B) Negocoll
C) Plastic material
D) Woods metal
- 6. It is a rubbing gelatinous consisting material, consisting of colloidal magnesium soap
A) Plastic material
B) Plaster of Paris
C) Negocoll
D) Celerit
- 7. Which one is not correct in the following statements?
A) Imprint is a weak mark made by gravity that stays on the surface.
B) Any material which can be changed from plastic or liquid state to the solid condition is called casting material.
C) It is hard to identify since one mark overlaps the other.
D) Examination of tool impression is done by comparative examination to determine or to show that the tool made the impression in question.
- 8. Impression of a single blow of a hammer is an example of:
A) Compression marks
B) Friction marks
C) Freckle marks
D) Tool marks
- 9. _____ also has the presence of trace elements which may be sufficient to establish or negate the fact of a common source for two samples of glass.
A) Gas
B) Glass
C) Oxide
D) Solid
- 10. Characteristics are needed so that the minute lines and ridges in the impression do not break or disintegrate.
A) Must harden rapidly to a rigid mass
B) Must not have the tendency to adhere to the impression
C) It must be easy to apply
D) Should not injure the impression
- 11. The color changes undergone by Gallotanic ink, in the process of oxidation, provides a valuable means of estimating the approximate age of writing. The Blue indicates it is:
A) Very recent
B) No recent
C) Less recent
D) Still less recent
- 12. The color is dependent on the inorganic salt added, but on drying and standing they turn black.
A) Logwood ink
B) Nigrosine ink
C) Carbon ink
D) Colored writing ink
- 13. The oldest ink material is:
A) Ballpoint ink
B) Aniline ink
C) India ink
D) Logwood ink
- 14. Today, most colored inks are composed of synthetic aniline dyes—stuffs which dissolve in water. In certain colored inks, ammonium vanadate is added to render the writing more permanent.
A) Colored writing ink
B) Ballpoint pen ink
C) Chinese ink
D) Logwood ink
- 15. Term applied to the partially visible depression appearing on a sheet of paper underneath the one that bears the writing appearance.
A) Contact writing
B) Obliteration
C) Writing on carbon paper
D) Indented writing
- 16. Easily affected by moisture, may be washed off from the paper with little difficulty.
A) India ink
B) Carbon ink
C) Nigrosine ink
D) Chinese ink
- 17. Marks produced on paper by the flexible wire soldered to the surface of the dandy roll that carries the watermark.
A) Wire mark
B) Water mark
C) Stamp mark
D) Ink mark
- 18. Which does not belong to the group:
A) Exposure to charcoal
B) Absorption test
C) Ironing
D) Soaking in coffee solution
- 19. May be made to determine either the rate of absorption or the total absorption of the paper.
A) Chemical test
B) Adsorption technique
C) Absorption test
D) Soaking in tea solution
- 20. The following are not examples of sizing materials, except:
A) Rag sulfate
B) Rosin
C) Mechanical pulp
D) Soda-sulfite mixture
- 21. An original or official written or printed paper furnishing information or used as proof of something.
- 22. Necessary writing which is not capable of being read, usually made of checks, birth, and transcript of records
- 23. Obscuring of writing by superimposing ink, pencil, or other marking materials.
- 24. No definite procedure which can be given for this determination except when the color is black; since the observation of the room oxygen of the air, acidity or alkalinity of the paper materials.
- 25. Extracted by heating the paper on a water bath with 95% alcohol.
- 26. Apparent pressure is necessary to burst a hole in a sheet when property is inserted in a ______
- 27. It can be detected by the addition of Millon’s reagent on the paper. Pink color appears if ______.
- 28. Added to paper to give weight.
- 29. Added to paper to improve it's texture
- 30. Ground wood sulfite mixture — this pulp from coniferous and dicotyledonous wood in combination with sulfite chemical pulp from cofiners
- 31. Similar to axillary hair but are coarser and do not appear bleached.
A) Moustache
B) Pubic hair
C) Limb hair
D) Trunk hair
- 32. Through adolescence is generally finer and more immature than adult hair but cannot be definitely differentiated with certainty.
- 33. Fiber is smoulder or burn slowly and give odor like that of the burning feather. When removed to the flame will not continue to burn readily and charred beard remains at the end of the fiber.
- 34. Under the ultraviolet light what is the color of bleached wool?
- 35. Under the ultraviolet light it shows very bright light blue, much brighter and whiter than acetate silk.
- 36. Smooth, cylindrical lustrous threads, usually single but often double, the twin-filaments held together by an envelope of gum
- 37. Odor not so pungent, fumes have no effect on the lead acetate paper
- 38. What is the French term for textiles?
- 39. Which is not belong to the group?
A) Thin cross section of the hair is oval in shape.
B) Contain heavy pigment distributed unevenly
C) Cross section will be oval to round in shape
D) Hair is usually kinky with marked variation in the diameter along the shaft
- 40. Which one belongs to the Mongoloid race hair?”
Options:
A) Cross section will be oval to round in shape
B) Hair is coarse and straight with very little variation in diameter along the shaft of the hair.
C) Usually straight and wavy and not kinky.
D) Hair contains very fine to coarse pigment and more evenly distributed.
- 41. It consists of one layer of non-nucleated polygonal cells which overlaps like a scale on fish.
- 42. Brownish black pigment responsible for the color of the hair, skin, and etc.
- 44. Under the microscope this hair has a dull appearance and the color tone is constant.
- 45. According to the medullary index of hair from different parts of the body, what is the medulla of the man’s hair on his forehead?
- 46. The medulla is usually narrower in width when present.
- 47. According to the medullary index, what is the medulla of the hair of a woman in her armpits?
- 48. In the characteristic of hair, identify from which race this characteristic belongs. Hair usually contains heavy black medulla or core.
- 49. From which part of the body does this hair come from? Varies in thickness along the shaft and are immature but are somewhat similar to head hair. They have fine and long tip end.
- 50. This kind of hair has an irregular shape and structure; looks like pubic hair but the ends are sharper and the hair is not so curly.
- 51. More wiry, have more constriction and twists, and usually have continuous broad medulla.
- 52. From which race does this belong? Cross section will be oval to round in shape.
- 53. Which race does this characteristic belong? Hair is usually kinky with marked variation in the diameter along the shaft.
- 54. Representative samples of hair from the victim as well as the suspect should be obtained if possible. It consists of at least how many strands of full-length hair to be obtained?
- 55. Medulla may not be present; indicates that the medulla is of what origin?
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