IAI CERTIFICATION EXAM 2025
QUESTIONS AND ANSWERS
DFO, Ninhydrin, Physical Developer - ANS What sequence of latent print development
techniques are used to develop prints from porous materials?
Ruhemann's Purple - ANS The final purple coloured compound usually produced with the
treatment of Ninhydrin
Small Particle Reagant - ANS What latent print development technique is used to process
nonporous material that are wet?
Amino Black - ANS A dye which stains protein present in blood to give a blue-black product
Natural latent fingerprints and fingerprints contaminated from the environment - ANS The
following types of fingerprints will fluoresce under appropriate illumination
Fluorescence Examination - ANS One of the first processes used in a sequence of a
fingerprint examination
Adhesive surface of adhesive tapes - ANS Gentian Violet is a dye which stains fatty
constituents of sebaceous sweat producing an intense purple image. It is effective for the
development of what kind of prints?
Naphthalene Black - ANS Alternative process name for Amido Black
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,Brown - ANS Iodine vapour is physically absorbed by latent fingerprint deposits and often
fades unless fixed. What color image is formed using iodine vapour?
Gentian Violet - ANS What can interfere with the forensic examination for handwriting, body
fluids, and ink?
Amino acids - ANS Ninhydrin is a general purpose fingerprint reagent for paper and some
other porous surfaces. What component of a fingerprint deposit does it react with?
Several weeks - ANS How long does it generally take for Ninhydrin treated prints to fully
develop naturally?
Heating and humidification - ANS The development of Ninhydrin treated prints may be
accelerated with the use of:
Ink running - ANS Ninhydrin which uses a Freon solvent virtually eliminates the following
problem when processing porous materials for latent prints
Ninhydrin - ANS What is applied using the method of dipping, brushing, swabbing or
spraying?
silver-based - ANS Physical developer (PD) is what kind of aqueous reagent?
Grey-silver - ANS Physical developer reacts with components of sebaceous sweat to form
what colored deposit?
Wetted - ANS Physical developer is a very effective reagent for developing latent fingerprints
on paper which has been?
Aluminum - ANS These flake powders have been shown to be more sensitive than most
types of powders
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, Silver Nitrate - ANS Which latent print development technique was replaced by the
Ninhydrin/Physical Developer combination for treating porous materials
Chlorides - ANS Silver Nitrate reacts with what component present in fingerprint deposits
wet - ANS Small particle reagent (SPR) is a latent print development technique that may be
used on all non-porous surfaces including those which are
Fats - ANS What does Small Particle Reagent adhere to in the fingerprint deposit?
Molybdenum Disulphide - ANS Small Particle Reagent is comprised of what fine particles?
Grey - ANS Small Particle Reagent forms what color deposit?
Sudan Black - ANS The best latent print development technique for use on non-porous
surfaces which are contaminated with grease, foodstuffs, or dried deposits of soft drinks
Cyanoacrylate - ANS An alternative process name for superglue is
White - ANS Superglue polymerizes on some latent fingerprints to produce what colored
deposit
water - ANS Superglue is thought to react primarily with what component in that latent print
deposit
non-porous - ANS Superglue is most suitable for what kinds of surfaces?
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QUESTIONS AND ANSWERS
DFO, Ninhydrin, Physical Developer - ANS What sequence of latent print development
techniques are used to develop prints from porous materials?
Ruhemann's Purple - ANS The final purple coloured compound usually produced with the
treatment of Ninhydrin
Small Particle Reagant - ANS What latent print development technique is used to process
nonporous material that are wet?
Amino Black - ANS A dye which stains protein present in blood to give a blue-black product
Natural latent fingerprints and fingerprints contaminated from the environment - ANS The
following types of fingerprints will fluoresce under appropriate illumination
Fluorescence Examination - ANS One of the first processes used in a sequence of a
fingerprint examination
Adhesive surface of adhesive tapes - ANS Gentian Violet is a dye which stains fatty
constituents of sebaceous sweat producing an intense purple image. It is effective for the
development of what kind of prints?
Naphthalene Black - ANS Alternative process name for Amido Black
COPYRIGHT © 2025 FYNDLAY ALL RIGHTS RESERVED 1
,Brown - ANS Iodine vapour is physically absorbed by latent fingerprint deposits and often
fades unless fixed. What color image is formed using iodine vapour?
Gentian Violet - ANS What can interfere with the forensic examination for handwriting, body
fluids, and ink?
Amino acids - ANS Ninhydrin is a general purpose fingerprint reagent for paper and some
other porous surfaces. What component of a fingerprint deposit does it react with?
Several weeks - ANS How long does it generally take for Ninhydrin treated prints to fully
develop naturally?
Heating and humidification - ANS The development of Ninhydrin treated prints may be
accelerated with the use of:
Ink running - ANS Ninhydrin which uses a Freon solvent virtually eliminates the following
problem when processing porous materials for latent prints
Ninhydrin - ANS What is applied using the method of dipping, brushing, swabbing or
spraying?
silver-based - ANS Physical developer (PD) is what kind of aqueous reagent?
Grey-silver - ANS Physical developer reacts with components of sebaceous sweat to form
what colored deposit?
Wetted - ANS Physical developer is a very effective reagent for developing latent fingerprints
on paper which has been?
Aluminum - ANS These flake powders have been shown to be more sensitive than most
types of powders
COPYRIGHT © 2025 FYNDLAY ALL RIGHTS RESERVED 2
, Silver Nitrate - ANS Which latent print development technique was replaced by the
Ninhydrin/Physical Developer combination for treating porous materials
Chlorides - ANS Silver Nitrate reacts with what component present in fingerprint deposits
wet - ANS Small particle reagent (SPR) is a latent print development technique that may be
used on all non-porous surfaces including those which are
Fats - ANS What does Small Particle Reagent adhere to in the fingerprint deposit?
Molybdenum Disulphide - ANS Small Particle Reagent is comprised of what fine particles?
Grey - ANS Small Particle Reagent forms what color deposit?
Sudan Black - ANS The best latent print development technique for use on non-porous
surfaces which are contaminated with grease, foodstuffs, or dried deposits of soft drinks
Cyanoacrylate - ANS An alternative process name for superglue is
White - ANS Superglue polymerizes on some latent fingerprints to produce what colored
deposit
water - ANS Superglue is thought to react primarily with what component in that latent print
deposit
non-porous - ANS Superglue is most suitable for what kinds of surfaces?
COPYRIGHT © 2025 FYNDLAY ALL RIGHTS RESERVED 3
