IAI LATENT PRINT EXAMINER
CERTIFICATION PREP UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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
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 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 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
combination for treating porous materials for latent prints? - CORRECT ANSWER -
Silver Nitrate
Silver Nitrate reacts with what component present in fingerprint deposits? - CORRECT
ANSWER - Chlorides
Small Particle Reagents (SPR) is a latent print development technique that may be used on all
non-porous surfaces including those which are: - CORRECT ANSWER - Wet
What does Small Particle Reagent adhere to in the fingerprint deposit? - CORRECT
ANSWER - Fats
Small Particle Reagent is comprised of what fine particles? - CORRECT ANSWER -
Molybdenum Disulphide
Small Particle Reagent forms what color deposit? - CORRECT ANSWER - Grey
The best latent print development technique for non-porous surfaces which are contaminated
with grease, food or dried deposits of soft drinks is? - CORRECT ANSWER - Sudan
Black
, An alternate process name for superglue is: - CORRECT ANSWER - Cyanoacrylate
Superglue polmerises on some latent fingerprints to produce what colored deposit? - CORRECT
ANSWER - White
Superglue is thought to react primarily with what component in the latent print deposit? -
CORRECT ANSWER - Water
Superglue is most suitable for what kinds of surfaces? - CORRECT ANSWER - Non-
porous
Vacuum Metal Deposition utilizes vacuum-coating technology for the evaporation of metals &
the deposition of thin metal films. Thin layers of what metal is used for this process? -
CORRECT ANSWER - Gold & Zinc
Vacuum Metal Deposition is particularly suitable on what surfaces: - CORRECT
ANSWER - Polythene Plastic
This fingerprint development technique reacts more intensely with older fingerprints thereby
making it possible to determine the relative age of a latent print: - CORRECT ANSWER -
It is impossible to determine the age of a fingerprint by observation of it's reaction with a
fingerprint detection process.
___ was employed at the Central Police Department at La Plata, Argentina & installed the
French Bertillon Anthropometric Identification System. - CORRECT ANSWER - Juan
Vucetich
In 1892 who contributed to the the first murder solved by fingerprints (Rojas Murder,
Argentina)? - CORRECT ANSWER - Juan Vucetich
A fingerprint classification without whorls would be: - CORRECT ANSWER - 1/1
CERTIFICATION PREP UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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
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 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 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
combination for treating porous materials for latent prints? - CORRECT ANSWER -
Silver Nitrate
Silver Nitrate reacts with what component present in fingerprint deposits? - CORRECT
ANSWER - Chlorides
Small Particle Reagents (SPR) is a latent print development technique that may be used on all
non-porous surfaces including those which are: - CORRECT ANSWER - Wet
What does Small Particle Reagent adhere to in the fingerprint deposit? - CORRECT
ANSWER - Fats
Small Particle Reagent is comprised of what fine particles? - CORRECT ANSWER -
Molybdenum Disulphide
Small Particle Reagent forms what color deposit? - CORRECT ANSWER - Grey
The best latent print development technique for non-porous surfaces which are contaminated
with grease, food or dried deposits of soft drinks is? - CORRECT ANSWER - Sudan
Black
, An alternate process name for superglue is: - CORRECT ANSWER - Cyanoacrylate
Superglue polmerises on some latent fingerprints to produce what colored deposit? - CORRECT
ANSWER - White
Superglue is thought to react primarily with what component in the latent print deposit? -
CORRECT ANSWER - Water
Superglue is most suitable for what kinds of surfaces? - CORRECT ANSWER - Non-
porous
Vacuum Metal Deposition utilizes vacuum-coating technology for the evaporation of metals &
the deposition of thin metal films. Thin layers of what metal is used for this process? -
CORRECT ANSWER - Gold & Zinc
Vacuum Metal Deposition is particularly suitable on what surfaces: - CORRECT
ANSWER - Polythene Plastic
This fingerprint development technique reacts more intensely with older fingerprints thereby
making it possible to determine the relative age of a latent print: - CORRECT ANSWER -
It is impossible to determine the age of a fingerprint by observation of it's reaction with a
fingerprint detection process.
___ was employed at the Central Police Department at La Plata, Argentina & installed the
French Bertillon Anthropometric Identification System. - CORRECT ANSWER - Juan
Vucetich
In 1892 who contributed to the the first murder solved by fingerprints (Rojas Murder,
Argentina)? - CORRECT ANSWER - Juan Vucetich
A fingerprint classification without whorls would be: - CORRECT ANSWER - 1/1
