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IAI CERTIFICATION EXAM 2025 IAI CERTIFICATION EXAM 2025 WITH GUARANTEED ACCURATE ANSWERS |VERIFIED DFO, Ninhydrin, Physical Developer - ACCURATE ANSWERS✔✔ What sequence of latent print development techniques are used to develop prints from porous materials? Ruhemann's Purple - ACCURATE ANSWERS✔✔ The final purple coloured compound usually produced with the treatment of Ninhydrin Small Particle Reagant - ACCURATE ANSWERS✔✔ What latent print development technique is used to process nonporous material that are wet? Amino Black - ACCURATE ANSWERS✔✔ A dye which stains protein present in blood to give a blue-black product
Natural latent fingerprints and fingerprints contaminated from the environment - ACCURATE ANSWERS✔✔ The following types of fingerprints will fluoresce under appropriate illumination Fluorescence Examination - ACCURATE ANSWERS✔✔ One of the first processes used in a sequence of a fingerprint examination Adhesive surface of adhesive tapes - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ Alternative process name for Amido Black Brown - ACCURATE ANSWERS✔✔ Iodine vapour is physically absorbed by latent fingerprint deposits and often fades unless fixed. What color image is formed using iodine vapour? Gentian Violet - ACCURATE ANSWERS✔✔ What can interfere with the forensic examination for handwriting, body fluids, and ink? Amino acids - ACCURATE ANSWERS✔✔ Ninhydrin is a general purpose fingerprint reagent for paper and some other porous surfaces. What component of a fingerprint deposit does it react with?
Silver Nitrate - ACCURATE ANSWERS✔✔ Which latent print development technique was replaced by the Ninhydrin/Physical Developer combination for treating porous materials Chlorides - ACCURATE ANSWERS✔✔ Silver Nitrate reacts with what component present in fingerprint deposits wet - ACCURATE ANSWERS✔✔ Small particle reagent (SPR) is a latent print development technique that may be used on all non-porous surfaces including those which are Fats - ACCURATE ANSWERS✔✔ What does Small Particle Reagent adhere to in the fingerprint deposit? Molybdenum Disulphide - ACCURATE ANSWERS✔✔ Small Particle Reagent is comprised of what fine particles? Grey - ACCURATE ANSWERS✔✔ Small Particle Reagent forms what color deposit? Sudan Black - ACCURATE ANSWERS✔✔ The best latent print development technique for use on non-porous surfaces which are contaminated with grease, foodstuffs, or dried deposits of soft drinks
Cyanoacrylate - ACCURATE ANSWERS✔✔ An alternative process name for superglue is White - ACCURATE ANSWERS✔✔ Superglue polymerizes on some latent fingerprints to produce what colored deposit water - ACCURATE ANSWERS✔✔ Superglue is thought to react primarily with what component in that latent print deposit non-porous - ACCURATE ANSWERS✔✔ Superglue is most suitable for what kinds of surfaces? Gold and zinc - ACCURATE ANSWERS✔✔ Vacuum Metal Deposition utilizes vacuum-coating technology for the evaporation of metals and the deposition of this metal films. The layers of what metal is used for this process? Polythene plastic - ACCURATE ANSWERS✔✔ Vacuum Metal Deposition is particularly suitable on what surfaces? Rodamine 6G - ACCURATE ANSWERS✔✔ This fingerprint development technique reacts more intensely with older fingerprints thereby making It possible to determine the relative age of a latent print
Mary Holland - ACCURATE ANSWERS✔✔ The first American fingerprint lecturer H. MacDonald - ACCURATE ANSWERS✔✔ The use of magnetic fingerprint was first reported by: Iodine - ACCURATE ANSWERS✔✔ What is applied with the fuming gun method, fuming cabinet method, and solution method? Superglue - ACCURATE ANSWERS✔✔ In 1982 the US Army Criminal Investigation Laboratory in Japan introduced which novel procedure for processing evidence for latent prints? Superglue prints - ACCURATE ANSWERS✔✔ What kind of prints are developed using an accelerate of a portable heater, hair dryer, or alcohol lamp? Ninhydrin - ACCURATE ANSWERS✔✔ Reacts with the amino acids in the fingerprint deposit Ninhydrin - ACCURATE ANSWERS✔✔ Freon 113 is a solvent that has been used to produce: DFO - ACCURATE ANSWERS✔✔ An alternative name for "1,8- diazafluoren-9-one" is:
Pounds - ACCURATE ANSWERS✔✔ Who reported the use of DFO for the fluorescent detection of latent prints on paper? Physical Developer - ACCURATE ANSWERS✔✔ A photographic process that is based on the formation of silver and a ferrous/ferric redox couple and the deposition of metal salts onto a fingerprint image: Amido black and coomassie blue - ACCURATE ANSWERS✔✔ These reagents have been reported to work very successfully in the enhancement of bloody fingerprints UV light sources, lasers and xenon arc lamps - ACCURATE ANSWERS✔✔ These light sources have been utilized in the development of latent prints and have produced better latent print images than regular room light alternative light sources - ACCURATE ANSWERS✔✔ The "Luma-lite" and "Polilight" are Freon 113 - ACCURATE ANSWERS✔✔ The use of this solvent in the preparation of Ninhydrin prevents ink from running on paper documents Ninhydrin - ACCURATE ANSWERS✔✔ This is known as the latent print examiner's "chemical workhorse" for the treatment of porous materials for latent prints
delta - ACCURATE ANSWERS✔✔ Can be made up of a dot, bifurcation, or an abrupt ending ridge innermost sufficient recurve - ACCURATE ANSWERS✔✔ the core of a loop is placed upon or within the _____ loop - ACCURATE ANSWERS✔✔ The essentials of this is: a sufficient recurve, a delta, and a ridge count across a looping ridge ulnar loops - ACCURATE ANSWERS✔✔ loops that flow in the direction of the ulna bone are called radial loops - ACCURATE ANSWERS✔✔ loops that flow in the direction of the radius bone are called double loop - ACCURATE ANSWERS✔✔ consists of two separate loop formations, with two separate and distinct shoulders and two deltas whorls - ACCURATE ANSWERS✔✔ a tenprint card with a primary classification of 32/32 means that all of the prints are primary, secondary, subsecondary, major, final , key - ACCURATE ANSWERS✔✔ the classification formula may be composed of the following divisions:
National Crime Information Center - ACCURATE ANSWERS✔✔ NCIC stands for radial loop - ACCURATE ANSWERS✔✔ Based on NCIC classification an actual ridge count + "50" represents what kind of fingerprint pattern? TT - ACCURATE ANSWERS✔✔ The NCIC code for tented arch is: XX - ACCURATE ANSWERS✔✔ The NCIC code for missing/amputated fingers is: forcibly straighten by "breaking the rigor" - ACCURATE ANSWERS✔✔ When fingerprinting the dead and rigor mortis has set in and the fingers are tightly clenched, you can do this to the fingers Sir William Herschel - ACCURATE ANSWERS✔✔ This person is credited with being the first European to recognize the value of friction ridge prints and to actually use them for identification purposes Alphonse Bertillion - ACCURATE ANSWERS✔✔ The first truly scientific method of criminal identification was devised by: Bertillonage - ACCURATE ANSWERS✔✔ Anthropometry is an identification system also known as:
urea, amino acids, peptides - ACCURATE ANSWERS✔✔ The solids of eccrine sweat are half inorganic salts and half organic compounds, The salt is mostly sodium chloride while the organic compounds include: rudimentary, subsidiary, nascent - ACCURATE ANSWERS✔✔ incipient ridges are also called ______ ridges Imbrication - ACCURATE ANSWERS✔✔ a feature where friction ridges all tend to lean in the same direction outer - ACCURATE ANSWERS✔✔ the epidermis is the ____ layer of the skin stratum malpighii - ACCURATE ANSWERS✔✔ the inner layer of cells in the epidermis (AKA stratum mucosum) stratum corneum - ACCURATE ANSWERS✔✔ the outer layer of cells in the epidermis basal layer - ACCURATE ANSWERS✔✔ the deepest layer of cells next to the dermis dermis - ACCURATE ANSWERS✔✔ The inner layer of friction ridge skin
dermal papillae - ACCURATE ANSWERS✔✔ the surface of the dermis is covered with blunt peg-like formations basal - ACCURATE ANSWERS✔✔ injury or disease that penetrates the skin to the dermal papillae level can damage the epidermal _____ layer infrastructure 12 - ACCURATE ANSWERS✔✔ the first noticeable development of friction skin on the volar surfaces takes place at about # weeks of gestation delta - ACCURATE ANSWERS✔✔ a triradius is called a ____ in most classification systems dermatoglyphics - ACCURATE ANSWERS✔✔ the study of the effects of disease and genetic aberrations on the friction ridges is referred to as poroscopy - ACCURATE ANSWERS✔✔ the comparison of relative pore locations is called dysplasia - ACCURATE ANSWERS✔✔ There are instances when ridge units are present but do not fuse together to form friction ridges. This aberration may affect all of the volar surfaces or just a small part. This condition is known as:
appear blotchy, lack detail, and have areas missing - ACCURATE ANSWERS✔✔ dirty substrates may not accept all of the matrix available during deposition. The resulting prints can: create molded impressions - ACCURATE ANSWERS✔✔ soft substrates permit the friction ridges to sink into their surfaces and ____. rounded units - ACCURATE ANSWERS✔✔ prints deposited when the friction ridges are wet, usually with water or a fluid other than sweat, are commonly referred to as wet prints. The friction ridges tend to appear as a series of ______ before and after development. fingerprints powders - ACCURATE ANSWERS✔✔ this development media can pile up in the nooks and crannies such as pore openings and fine crevices in the matrix flattening or broadening each ridge - ACCURATE ANSWERS✔✔ deposition pressure generally changes the shape of the friction ridge by: on the lateral or horizontal plane - ACCURATE ANSWERS✔✔ pressure distortion is different from deposition distortion. While deposition pressure describes vertical weight being places on the friction ridges, pressure distortion take place where? red flags - ACCURATE ANSWERS✔✔ deposition or pressure distortion indicators that are warnings or warrant careful analysis
ridge break - ACCURATE ANSWERS✔✔ a dip in the ridge at a pore opening, a failure in deposition of matrix, or dirt may cause: 3rd level detail - ACCURATE ANSWERS✔✔ the intrinsic or innate ridge formations are what level of detail digit determination - ACCURATE ANSWERS✔✔ when encountering friction ridge clusters, the anatomical aspects of the digits in the cluster assist with: objective - ACCURATE ANSWERS✔✔ friction ridge comparison is a process where visual comparative measurements, and sometimes physical comparative measurements are made between the latent and exemplar prints. The measurements are sequential, spatial, and configurative in nature. The comparison must be completely: to narrow the number of possible donors - ACCURATE ANSWERS✔✔ during the identification process the purpose of the first level detail is: islands and bifurcations - ACCURATE ANSWERS✔✔ Hale's islands and branchings refer to major 2nd level ridge path deviations found on the friction ridge known as: enclosure - ACCURATE ANSWERS✔✔ when two bifurcations form on the same ridge facing each other and their branches join, the formation is called:
12 - ACCURATE ANSWERS✔✔ any chart presented must be technically correct. that includes the corresponding ridge characteristics in the two prints must be similarly numbered and indicated. How may points are ample enough to illustrate an identification? clockwise and the numbers evenly spaced - ACCURATE ANSWERS✔✔ a chart will present a clearer, neater, and more pleasing appearance if it is numbered, how? edgeoscopy - ACCURATE ANSWERS✔✔ the use of edge shapes during comparison and does not require the shape to be classified. one shape is compared to another and found to be consistent or not edgeoscopy - ACCURATE ANSWERS✔✔ was originally coined by Salil K. Chatterjee in a paper published in "Fingerprint and Identification Magazine; September 1962 genetics, anatomy, embryology - ACCURATE ANSWERS✔✔ the scientific knowledge supporting ridgeology has been extracted from various related sciences such as: David Ashbaugh - ACCURATE ANSWERS✔✔ ridgeology was coined in 1983 by 3rd and 4th - ACCURATE ANSWERS✔✔ friction ridges begin to form on the human fetus during which months of fetal life?
scar - ACCURATE ANSWERS✔✔ when the skin is damaged to the extent that both the epidermis and dermis are disturbed; provide additional and valuable means of identification. loops - ACCURATE ANSWERS✔✔ about 60% of fingerprint patterns whorls - ACCURATE ANSWERS✔✔ about 35% of fingerprint patterns arches - ACCURATE ANSWERS✔✔ about 5% of fingerprints patterns acid - ACCURATE ANSWERS✔✔ John Dillinger, the notorious criminal of the Great Depression, tried to remove his fingerprints with: 16 - ACCURATE ANSWERS✔✔ there are 10 spaces on a fingerprint card, and if a whorl appears in either the right thumb or index finger space, the space is given a value of: 1 - ACCURATE ANSWERS✔✔ there are 10 spaces on a fingerprint card, and is a whorl appears in either the left ring or little fingers space, the space is given a value of: thenar - ACCURATE ANSWERS✔✔ the large cushion area at the base of the thumb is known as: proximal phalangeal zone - ACCURATE ANSWERS✔✔ the area or finger joint located adjacent to the palm
