IAI LATENT PRINT EXAMINER
CERTIFICATION PREP QUESTIONS|
WITH ALREADY SOLVED CORRECTLY
ANSWERS!! | ASSURED SUCCESS
What sequence of latent print development techniques are used to develop
prints from porous materials? - 🧠 ANSWER ✔✔DFO, Ninhydrin, Physical
Developer
The final purple colored compound usually produced with the treatment of
Ninydrin is called: - 🧠 ANSWER ✔✔Ruhemann's Purple
What latent print development technique is used to process nonporous
materials that are wet? - 🧠 ANSWER ✔✔Small Particle Reagent
A dye which stains protein present in blood to give a blue-black product - 🧠
ANSWER ✔✔Amido Black
The following types of fingerprints will fluoresce under the appropriate
illumination: - 🧠 ANSWER ✔✔- Natural latent prints
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,- 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: - 🧠 ANSWER ✔✔Adhesive surfaces
Alternate process name(s) for Gentian Violet - 🧠 ANSWER ✔✔- Crystal
Violet
- Methyl Violet
Alternative process name for Amido Black - 🧠 ANSWER ✔✔Naphthalene
Black
Iodine vapor is physically absorbed by latent fingerprint deposits & often
fades unless fixed. What color image is formed using iodine vapor? - 🧠
ANSWER ✔✔Brown
Gentian Violet can interfere with the forensic examination of: - 🧠 ANSWER
✔✔- Handwriting
- Body fluids
- Ink
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,Ninhydrin is a general purpose fingerprint reagent for paper & some other
porous surfaces. What component of a fingerprint deposit does it react
with? - 🧠 ANSWER ✔✔Amino Acids
How long does it generally take for ninhydrin treated prints to fully develop
naturally? - 🧠 ANSWER ✔✔Several weeks
The development of Ninhydrin treated prints may be accelerated with the
use of: - 🧠 ANSWER ✔✔Heating & Humidification
Ninhydrin, which uses a Freon solvent, virtually eliminates the following
problem when processing porous materials for latent prints? - 🧠 ANSWER
✔✔Ink running
Ninhydrin may be applied using the following methods: - 🧠 ANSWER ✔✔-
Dipping
- Brushing
- Spraying
Physical Developer (PD) is what kind of aqueous reagent? - 🧠 ANSWER
✔✔Silver-based
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Physical Developer reacts with components of sebaceous sweat to form
what colored deposit? - 🧠 ANSWER ✔✔Grey-Silver
Physical Developer is a very effective reagent for developing latent
fingerprints on paper which has been: - 🧠 ANSWER ✔✔wetted
These ___ flake powders have been shown to be more sensitive than most
other types of powders: - 🧠 ANSWER ✔✔Aluminum
Which latent print development technique was replaced by the Ninhydrin/
Physical Developer combination for treating porous materials for latent
prints? - 🧠 ANSWER ✔✔Silver Nitrate
Silver Nitrate reacts with what component present in fingerprint deposits? -
🧠 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: - 🧠
ANSWER ✔✔Wet
What does Small Particle Reagent adhere to in the fingerprint deposit? - 🧠
ANSWER ✔✔Fats
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
CERTIFICATION PREP QUESTIONS|
WITH ALREADY SOLVED CORRECTLY
ANSWERS!! | ASSURED SUCCESS
What sequence of latent print development techniques are used to develop
prints from porous materials? - 🧠 ANSWER ✔✔DFO, Ninhydrin, Physical
Developer
The final purple colored compound usually produced with the treatment of
Ninydrin is called: - 🧠 ANSWER ✔✔Ruhemann's Purple
What latent print development technique is used to process nonporous
materials that are wet? - 🧠 ANSWER ✔✔Small Particle Reagent
A dye which stains protein present in blood to give a blue-black product - 🧠
ANSWER ✔✔Amido Black
The following types of fingerprints will fluoresce under the appropriate
illumination: - 🧠 ANSWER ✔✔- Natural latent prints
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,- 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: - 🧠 ANSWER ✔✔Adhesive surfaces
Alternate process name(s) for Gentian Violet - 🧠 ANSWER ✔✔- Crystal
Violet
- Methyl Violet
Alternative process name for Amido Black - 🧠 ANSWER ✔✔Naphthalene
Black
Iodine vapor is physically absorbed by latent fingerprint deposits & often
fades unless fixed. What color image is formed using iodine vapor? - 🧠
ANSWER ✔✔Brown
Gentian Violet can interfere with the forensic examination of: - 🧠 ANSWER
✔✔- Handwriting
- Body fluids
- Ink
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,Ninhydrin is a general purpose fingerprint reagent for paper & some other
porous surfaces. What component of a fingerprint deposit does it react
with? - 🧠 ANSWER ✔✔Amino Acids
How long does it generally take for ninhydrin treated prints to fully develop
naturally? - 🧠 ANSWER ✔✔Several weeks
The development of Ninhydrin treated prints may be accelerated with the
use of: - 🧠 ANSWER ✔✔Heating & Humidification
Ninhydrin, which uses a Freon solvent, virtually eliminates the following
problem when processing porous materials for latent prints? - 🧠 ANSWER
✔✔Ink running
Ninhydrin may be applied using the following methods: - 🧠 ANSWER ✔✔-
Dipping
- Brushing
- Spraying
Physical Developer (PD) is what kind of aqueous reagent? - 🧠 ANSWER
✔✔Silver-based
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Physical Developer reacts with components of sebaceous sweat to form
what colored deposit? - 🧠 ANSWER ✔✔Grey-Silver
Physical Developer is a very effective reagent for developing latent
fingerprints on paper which has been: - 🧠 ANSWER ✔✔wetted
These ___ flake powders have been shown to be more sensitive than most
other types of powders: - 🧠 ANSWER ✔✔Aluminum
Which latent print development technique was replaced by the Ninhydrin/
Physical Developer combination for treating porous materials for latent
prints? - 🧠 ANSWER ✔✔Silver Nitrate
Silver Nitrate reacts with what component present in fingerprint deposits? -
🧠 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: - 🧠
ANSWER ✔✔Wet
What does Small Particle Reagent adhere to in the fingerprint deposit? - 🧠
ANSWER ✔✔Fats
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
