Unit 2: Development of Fingerprints - Practice Quiz

1 A fingerprint that is invisible to the naked eye and requires development to be visualized is called a:

2 A fingerprint impression left in a soft material such as wax, putty, or fresh paint is known as a:

3 A visible fingerprint left when a finger stained with blood, ink, or grease touches a surface is called a:

4 Which fine powder is most commonly used to develop latent fingerprints on smooth, light-coloured surfaces?

5 Ninhydrin is a chemical reagent that develops latent fingerprints by reacting with:

6 The purple-coloured product formed when ninhydrin reacts with amino acids in a fingerprint is called:

7 Cyanoacrylate fuming, commonly used to develop latent prints, is popularly known as the:

8 Silver nitrate develops latent fingerprints by reacting with which component of the print residue?

9 Iodine fuming develops latent fingerprints because iodine vapour is absorbed by the:

10 Which type of light source is widely used to enhance and detect fluorescent-treated latent fingerprints?

11 A device that produces different wavelengths of light to detect latent fingerprints is generally called a(n):

12 The traditional method of recording fingerprints of a living person uses:

13 After a latent print is developed with powder, which technique is commonly used to lift it from a surface?

14 Which of the following is one of the three basic fingerprint pattern types?

15 The fingerprint classification system widely used and named after its British developer is the:

16 The computerized system used to store and search large collections of fingerprint records is known as:

17 The best way to permanently preserve a developed latent fingerprint before lifting is to:

18 Digital imaging software is used in fingerprint analysis mainly to:

19 When fingerprinting a deceased person whose fingers have become wrinkled, a common technique to restore the ridges is:

20 The Aadhaar card in India is issued by which authority?

21 A burglar handles a freshly painted windowsill, leaving a three-dimensional ridge impression in the soft paint. This type of impression is best classified as:

22 An investigator must develop latent prints on a porous paper document. Which reagent group targets the amino acid components of the residue and is therefore most appropriate?

23 Cyanoacrylate fuming develops latent prints on a non-porous surface primarily by:

24 The Silver Nitrate method develops latent prints by reacting with which component of sweat residue?

25 While recording inked fingerprints, a technician performs a controlled rotation of the finger from one nail edge to the other. This is done specifically to:

26 In the Henry Classification System, the primary classification value is derived by assigning numerical values to fingers containing which pattern type?

27 A forensic light source is used with an orange barrier filter after treating prints with a fluorescent dye. The barrier filter's main function is to:

28 DFO (1,8-diazafluoren-9-one) is often preferred over ninhydrin on paper because DFO-developed prints:

29 Small Particle Reagent (SPR) is most suitable for developing latent prints on:

30 After developing a latent print with black powder on a smooth surface, the most common method to preserve and lift it is:

31 A digital image of a bloody fingerprint on patterned fabric is processed to remove the interfering background pattern. This is most effectively achieved using:

32 When a deceased person's fingers show wrinkling or early decomposition making printing difficult, a common technique to restore ridge detail is:

33 Latent prints deposited on the interior of a discarded latex glove worn by a suspect are valuable because they can:

34 The UIDAI's Aadhaar programme uses fingerprints along with iris scans primarily to achieve:

35 Physical Developer (PD) is chosen to develop prints on a paper that has been soaked in water because it targets:

36 Untreated latent prints can sometimes be visualized directly with a laser at ~450–530 nm because certain residue components exhibit:

37 A fingerprint left by a finger contaminated with grease and then pressed onto a clean glass is visible to the naked eye. This is categorized as a:

38 In modern automated cataloguing, an AFIS matches a query print to stored records mainly by comparing:

39 Best practice in forensic digital imaging requires that all enhancement steps be performed on a working copy while the original is preserved, primarily to:

40 Cyanoacrylate-developed prints on a curved, non-porous object that cannot be lifted with tape are best preserved by:

41 Ninhydrin develops latent prints by reacting with amino acids in eccrine residue. Which statement best explains why treated prints are often re-treated with a metal salt solution such as zinc chloride?

42 A porous document already fumed and treated has been submerged in water for several days, likely washing away water-soluble amino acids. Which reagent is MOST appropriate to still recover prints?

43 Cyanoacrylate (superglue) fuming polymerizes on latent prints. Which factor most directly controls whether polymerization produces well-defined ridges versus overdeveloped, cotton-like clumps?

44 A print pressed into fresh putty and a print visible in a blood smear both differ from a typical latent. How are these classified respectively?

45 When examining a DFO-treated document, an examiner selects a green (~530 nm) excitation and views through an orange barrier filter. What is the rationale?

46 Latex glove interiors can retain the wearer's ridge detail as a reverse (negative) impression. Which processing consideration is MOST critical when developing prints on the flexible glove interior?

47 A body recovered after prolonged immersion shows severe skin wrinkling ('washerwoman' effect). Which technique best restores ridge detail for recording?

48 In the Henry classification system with the standard formula, a print pattern only contributes to the numerical value when it is a whorl. If whorls appear on the right index and left thumb only, and using the standard fraction (adding 1 to numerator and denominator), what is the primary classification?

49 UIDAI's biometric de-duplication during enrollment prevents an individual from obtaining multiple Aadhaar numbers. Which combination of biometrics is captured to enable this 1:N de-duplication?

50 An examiner uses Fourier (frequency-domain) filtering on a scanned latent overlaying a patterned banknote. Why is this method effective at removing the background pattern?

51 On a dark, non-porous, wet surface, an examiner wants a single-step fluorescent development without prior superglue fuming. Which reagent is most suitable?

52 After cyanoacrylate fuming on a curved plastic bottle, why is high-resolution photography generally preferred over lifting for preservation of the polymerized print?

53 Physical Developer works by redox chemistry. What is the fundamental basis of ridge visualization in PD?

54 When collecting elimination prints at a scene involving multiple residents, what is the primary forensic rationale for the practice?

55 An untreated latent on a multicolored surface fluoresces weakly under UV due to inherent residue components. Why might inherent fluorescence examination be attempted before any powder or chemical treatment?

56 For processing the adhesive side of tape, which reagent is specifically formulated to develop prints without the adhesive interfering?

57 In ridge counting for loops during classification, why is the core-to-delta count taken along a straight imaginary line, excluding both the delta and core themselves?

58 A forensic image standard requires that enhancement be defensible in court. Which practice best satisfies this evidentiary requirement?

59 Why does DFO generally reveal more prints than ninhydrin on the same porous document, despite both reacting with amino acids?

60 In an advanced decomposition case where epidermal ridge skin has sloughed off, which approach can still yield identifiable ridge detail?