IAI LATENT PRINT EXAMINER CERTIFICATION EXAM
PREP 2024 ACTUAL EXAM COMPLETE 350 QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A
What sequence of latent print development
techniques are used to develop prints from porous
materials? - CORRECT ANSWER >>>>DFO, Ninhydrin,
Physical Developer
The final purple colored compound usually produced
with the treatment of Ninydrin is called: - CORRECT
ANSWER >>>>Ruhemann's Purple
What latent print development technique is used to
process nonporous materials that are wet? - CORRECT
ANSWER >>>>Small Particle Reagent
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A dye which stains protein present in blood to give a
blue-black product - CORRECT ANSWER >>>>Amido
Black
The following types of fingerprints will fluoresce under
the appropriate illumination: - CORRECT ANSWER
>>>>- Natural latent prints
- Some types of contamination arising from the
environment & subsequently deposited in fingerprints
Gentian Violet is a dye which stains fatty constituents
of sebaceous sweat, producing an intense purple
image. It is very effective for the development of
latent fingerprints on: - CORRECT ANSWER
>>>>Adhesive surfaces
Alternate process name(s) for Gentian Violet -
CORRECT ANSWER >>>>- Crystal Violet
- Methyl Violet
Alternative process name for Amido Black - CORRECT
ANSWER >>>>Naphthalene Black
Iodine vapor is physically absorbed by latent
fingerprint deposits & often fades unless fixed. What
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color image is formed using iodine vapor? - CORRECT
ANSWER >>>>Brown
Gentian Violet can interfere with the forensic
examination of: - CORRECT ANSWER >>>>-
Handwriting
- Body fluids
- Ink
Ninhydrin is a general purpose fingerprint reagent for
paper & some other porous surfaces. What
component of a fingerprint deposit does it react with?
- CORRECT ANSWER >>>>Amino Acids
How long does it generally take for ninhydrin treated
prints to fully develop naturally? - CORRECT ANSWER
>>>>Several weeks
The development of Ninhydrin treated prints may be
accelerated with the use of: - CORRECT ANSWER
>>>>Heating & Humidification
Ninhydrin, which uses a Freon solvent, virtually
eliminates the following problem when processing
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porous materials for latent prints? - CORRECT
ANSWER >>>>Ink running
Ninhydrin may be applied using the following
methods: - CORRECT ANSWER >>>>- Dipping
- Brushing
- Spraying
Physical Developer (PD) is what kind of aqueous
reagent? - CORRECT ANSWER >>>>Silver-based
Physical Developer reacts with components of
sebaceous sweat to form what colored deposit? -
CORRECT ANSWER >>>>Grey-Silver
Physical Developer is a very effective reagent for
developing latent fingerprints on paper which has
been: - CORRECT ANSWER >>>>wetted
These ___ flake powders have been shown to be more
sensitive than most other types of powders: -
CORRECT ANSWER >>>>Aluminum
Which latent print development technique was
replaced by the Ninhydrin/ Physical Developer
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