IAI Latent Print Certification Test
UPDATED ACTUAL 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 coloured compound usually produced with the treatment of Ninhydrin -
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 appropriate illumination -
CORRECT ANSWER✔✔- 1. Natural latent fingerprints
2. Some types of contamination arising from the environment and subsequently deposited in
fingerprints
May be one of the first processes used in a sequence of a fingerprint examination -
CORRECT ANSWER✔✔- Fluorescence examination
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 surface of adhesive tapes
Alternative process names for Gentian Violet - CORRECT ANSWER✔✔- 1. Crystal Violet
2. Methyl Violet
Alternative process name for Amido Black - CORRECT ANSWER✔✔- 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 ANSWER✔✔- Brown
Gentian Violet can interfere with the forensic examination for: - CORRECT ANSWER✔✔-
1. Handwriting
2. Body fluids
3. Ink
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 ANSWER✔✔-
Amino Acids
How long does it generally take for Ninhydrin treated prints to naturally, fully develop -
CORRECT ANSWER✔✔- Several weeks
The development of Ninhydrin treated prints may be accelerated with the use of? -
CORRECT ANSWER✔✔- Heating and 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 what methods? - CORRECT ANSWER✔✔- 1. Dipping
2. Brushing
3. 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 Particel Reagent (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 adheres 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, also
white and black
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
ANSWER✔✔- Sudan Black
An alternative process name for superglue - CORRECT ANSWER✔✔- Cyanoacrylate
Superglue polymersises on some latent fingerprints to produce what colored deposit? -
CORRECT ANSWER✔✔- White
UPDATED ACTUAL 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 coloured compound usually produced with the treatment of Ninhydrin -
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 appropriate illumination -
CORRECT ANSWER✔✔- 1. Natural latent fingerprints
2. Some types of contamination arising from the environment and subsequently deposited in
fingerprints
May be one of the first processes used in a sequence of a fingerprint examination -
CORRECT ANSWER✔✔- Fluorescence examination
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 surface of adhesive tapes
Alternative process names for Gentian Violet - CORRECT ANSWER✔✔- 1. Crystal Violet
2. Methyl Violet
Alternative process name for Amido Black - CORRECT ANSWER✔✔- 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 ANSWER✔✔- Brown
Gentian Violet can interfere with the forensic examination for: - CORRECT ANSWER✔✔-
1. Handwriting
2. Body fluids
3. Ink
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 ANSWER✔✔-
Amino Acids
How long does it generally take for Ninhydrin treated prints to naturally, fully develop -
CORRECT ANSWER✔✔- Several weeks
The development of Ninhydrin treated prints may be accelerated with the use of? -
CORRECT ANSWER✔✔- Heating and 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 what methods? - CORRECT ANSWER✔✔- 1. Dipping
2. Brushing
3. 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 Particel Reagent (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 adheres 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, also
white and black
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
ANSWER✔✔- Sudan Black
An alternative process name for superglue - CORRECT ANSWER✔✔- Cyanoacrylate
Superglue polymersises on some latent fingerprints to produce what colored deposit? -
CORRECT ANSWER✔✔- White
