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