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