FORENSIC CHEM & TOXICOLOGY
Total points22/50
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angelieregieeestorque@gmail.com
FULL NAME (Last Name, First Name, Name Extension, Middle Initial)*
Please use CAPITAL LETTERS.
ESTORQUE, ANGELIE REGIE J
INSTRUCTIONS:
Read and understand each questions carefully and choose the best correct answer. Failure to
follow instructions; your scores will not be recorded.
“ Did you ever steal anything?” is what kind of questions.
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a. Relevant
b. Irrelevant
c. Control
d. General question
The morphological constituents of human hair.
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a. Medulla, Cortex, Cuticle
b. Root, Shaft, Tip
c. Anagen, Catagen, Telogen
d. Refracting index, Birefringence, Density
Correct answer
b. Root, Shaft, Tip
Antidote for Arsenic Poisoning.
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a. Thiamine
b. Pyridoxine
c. Succimer
d. Fabahistine
Which statement is incorrect when fibers are burned?
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A. Animal fibers shoulder or burn slowly and give odor like that of burning feather.
B.When removed from flame, animal fibers do not continue to burn readily and a charred bead
remain at the end of the fiber
C. Wool fibers burn with strong odor, disagreeable, fumes turn lead acetate paper black or
brown
D. Silk fibers burn with odor not so pungent
E. Vegetable fibers when burned, charred bead is present when fiber is removed from the flame
What is added to a casting material to hasten its hardening?
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A. Vinegar
B. Salt
C. Chlorine
D. Sodium
E. Flour
Correct answer
B. Salt
Synthetic fibers are usually stronger, lighter and more flexible. Offers a greater resistance to
chemical damage and do not rot. Which one is the expensive but it is the best rope for general
purposes?
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A. Manila hemp
B. Polyester
C. Nylon
D. Polypropylene
E. Armid
Correct answer
B. Polyester
What is the chemical examination on semen and seminal fluids in which crystals formed within a few
minutes when saturated solution of picric acid is mixed?
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A. Florence Test
B. Barbiero’s Test
C. Puramen Reaction Test
D. Acid Phosphates Test
E. Precipitin Test
This will serve as authority of polygraph examiner to examine the subject as evidence that subject
voluntary submits to undergo the test.
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a. Willingness of the subject to undergo Pre-test in interview
b. Willingness of the subject to take the test to prove his innocence
c. Willingness of the subject to give his personal data during the pre-test interview
d. None of the foregoing
These are exclusively the products of decomposition of primary minerals such as feldspar.
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A. Feldspar
B. Clay
C. Primary minerals
D. Mud
E. Organic Constituents
Correct answer
C. Primary minerals
The test used in textile fibers.
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a. photography
b. lie detection
c. burning and solubility test
d. comparison microscope
The shaft is the most distinctive part of the hair. Its outer covering is called –
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A. Coating
B. Cuticle
C. Cortex
D. Medulla
E. A and or B
Which is frequently useful in ascertaining the general group to which a fiber belongs or the possible
difference in origin of two or more questioned samples when it is desirable to avoid lengthy chemical or
microscopic analysis?
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A. Fluorescence analysis
B. Microscopic analysis
C. Chemical analysis
D. Biological analysis
E. Physical analysis
Correct answer
A. Fluorescence analysis
It is consist of fibers or filaments which have been twisted together.
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A. Fiber
B. Textile
C. Thread
D. Yarn
E. Cloth
What is the chemical examination on semen and seminal fluids in which crystals formed within a
few minutes when saturated solution of picric acid is mixed?
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A. Florence Test
B. Barbiero’s Test
C. Puramen Reaction Test
D. Acid Phosphates Test
E. Precipitin Test
It refers to heavier lines having 3 or more strands, used in suicide by hanging dead body.
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A. Line
B. Cord
C. String
D. Rope
E. Twine
What is the method of motility test which determines if sperm is dead or alive?
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A. Bloom’s method
B. Dr. Hankin’s Method
C. Gunguli’s Method
D. Morphology Test
E. Motility Test
Correct answer
A. Bloom’s method
The plaster of Paris is the most common casting material. However, the only drawback of this
material is its -
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A. Hardness
B. Thickness
C. Superior strength
D. Poor mechanical strength
E. None of these
Correct answer
D. Poor mechanical strength
These are usually fine.
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A. Hairs on body surfaces
B. Beard
C. Mustache
D. Scalp hairs
E. Eyebrow
Correct answer
A. Hairs on body surfaces
DNA is a chemical substance found in all cells and individuals has a unique DNA and only ________ share
the same DNA pattern.
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a. Mother and child
b. Father and child
c. Mother and father
d. Identical twins
Correct answer
d. Identical twins
Among the methods of examining semen and seminal fluids, which should be conducted first?
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A. Physical
B. Chemical
C. Biological
D. Ultra-violet
E. Microscopic
Correct answer
A. Physical
This is the most reliable and best means of identification. This type of analysis is desirable when
the unknown sample is small in size, a factor which precludes the application of burning test and
other chemical means of identification.
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A. Fluorescence analysis
B. Microscopic analysis
C. Chemical analysis
D. Biological analysis
E. Physical analysis
Correct answer
B. Microscopic analysis
What is the method of motility test which determines if sperm is dead or alive?
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A. Bloom’s method
B. Dr. Hankin’s Method
C. Gunguli’s Method
D. Morphology Test
E. Motility Test
Correct answer
A. Bloom’s method
What is that simple procedure of determining the identity or non-identity of soil samples
discovered by Lauren Coin and Paul Kirk. The procedure is reasonably rapid, requiring a few
hours of completion. They require no special apparatus and is indeed so sensitive to small
changes soil composition.
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A. Microscopic analysis
B. Physical analysis
C. Biological analysis
D. Density distribution
E. Soil Examination
Correct answer
D. Density distribution
Among the methods of examining semen and seminal fluids, which should be conducted first?
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A. Physical
B. Chemical
C. Biological
D. Ultra-violet
E. Microscopic
Correct answer
A. Physical
What is the faithful representation of an impression made on a soft surface by the application of
a casting material?
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A. Cast
B. Molding
C. Moulage
D. Duplicate
E. All of these
Correct answer
C. Moulage
Brach of Metallurgy that involves the microstructures of metals and alloys
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a. Metallography
b. alloygraphy
c. macro etching
d. micro etching
Correct answer
a. Metallography
In the preservation, when semen or seminal fluid is collected outside the laboratory, it must be kept safe
with body temperature (under armpit or between thighs or inside the bra), 370C and should be
delivered as soon as possible, preferably in 30 minutes but never more than –
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A. 1 hour
B. 2 hours
C. 3 hours
D. 4 hours
E. 5 hours
Correct answer
B. 2 hours
Daily, the average beard hair grows about –
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A. 2.cms
B. 0.2mm
C. 0.4mm
D. 0.3mm
E. 0.5mm
Correct answer
C. 0.4mm
What petrographic analysis can demonstrate the identity or non identity of two or more soil
samples?
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A. Microscopic
B. Thermal
C. X-ray diffraction
D. Micro-chemical
E. Spectrographic
Correct answer
E. Spectrographic
What is the chemical examination on semen and seminal fluids in which crystals formed within a
few minutes when saturated solution of picric acid is mixed?
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A. Florence Test
B. Barbiero’s Test
C. Puramen Reaction Test
D. Acid Phosphates Test
E. Precipitin Test
If fluid semen is found, it should be placed
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A. in a test tube
B. in a paper packet
C. on a cotton
D. in a plastic container
E. Any of these
Correct answer
A. in a test tube
Covers the surface of the dermis with blunt peg-like formation.
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a. Epidermis
b. Sweat pores
c. Dermal papillae
d. Sweat gland
Correct answer
c. Dermal papillae
How many percent of alcohol is needed to be considered that a person is intoxicated?
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a.0.05%
b. 0.15%
c. 0.15%
d. 1.05%
What is the common method applied by criminals in removing serial numbers of firearms and
motor vehicles?
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A. Sanding
B. Filing
C. Etching
D. Painting
E. Patching
Correct answer
B. Filing
This is the most reliable and best means of identification. This type of analysis is desirable when
the unknown sample is small in size, a factor which precludes the application of burning test and
other chemical means of identification.
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A. Fluorescence analysis
B. Chemical analysis
C. Microscopic analysis
D. Biological analysis
E. Physical analysis
Which of the following refers to the collection of seminal fluid from the vaginal vault after
coitus?
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A. Masturbation
B. Self-production
C. Emission
D. Condom collection
E. Aspiration
Correct answer
E. Aspiration
Among the stages in the practice of Forensic Chemistry, which comes first?
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A. Analysis or Examination of Specimen
B. Collection of Specimen
C. Court Presentation
D. Communication of Evidence
E. Preservation of Evidence or Specimen
Correct answer
B. Collection of Specimen
Which statement is incorrect when fibers are burned?
*
1/1
A. Animal fibers shoulder or burn slowly and give odor like that of burning feather.
B. When removed from flame, animal fibers do not continue to burn readily and a charred bead
remain at the end of the fiber
C. Wool fibers burn with strong odor, disagreeable, fumes turn lead acetate paper black or
brown
D. Silk fibers burn with odor not so pungent
E. Vegetable fibers when burned, charred bead is present when fiber is removed from the flame
The two types of glass fractures are?
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a. Radial and Ulnar fractures
b. Radial and Concentric fractures
c Concentric and emetic fractures
d. Plain and one-way fractures
An instrument used to detect alcohol in human body.
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a. Alcotest
b. Drunkometer
c. Breath analyzers
d. Intoximeter
Among the methods of examining semen and seminal fluids, which should be conducted first?
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A. Physical
B. Chemical
C. Biological
D. Ultra-violet
E. Microscopic
It refers to the last stage of toxological examination.
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a. Quantification
b. Microscopic examination
c. Biological
d. None of the following
In soil identification, what is referred to as “matter in the wrong place?”
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A. Soil
B. Mud
C. Dust
D. Dirt
E. C and D
Correct answer
E. C and D
In the examination of dust and other debris, what should be done first?
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A. Microscopic examination
B. Examination using magnifying lens
C. Quantitative examination
D. Qualitative examination
E. Chemical examination
Three (3) types of poisons.
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a. Organic, Inorganic, Biological
b. Hypnotic, Sedatives, Laxatives
c. Emetics, Biological, Inorganic
d. Organic, Sedatives, Biological
The total number of spermatozoa contained in a single ejaculation from healthy young man is
about how many million?
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A. 100-200
B. 200-300
C. 300-400
D. 400-500
E. 500-600
Correct answer
D. 400-500
Human hair has medullary index of less than ________, and animal hair has a medullary index of greater
than _________.
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a. 0.1, 0.2
b. 0.2, 0.3
c. 0.3, 0.5
d. 0.5, 0.7
Correct answer
d. 0.5, 0.7
What is the term referring to the male gonads or sex organ? It is an oval glandular structure that forms
in the dorsal portion of the abdominal cavity from the same embryonic tissue. It is actually a
counterpart of the ovaries of the female.
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A. Gonad
B. Penis
C. Testes
D. Epididymis
E. Seminal vesicle
The restoration of tampered serial numbers can be done by the use of –
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a. Benzidine solution
b. Saline solution
c. Etching solution
d. Sulfuric acid
Seminal fluid may be preserved by few drops of tolouenel or 10%
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A. Alcohol
B. Chlorine
C. Hydrogen Sulfide
D. Saline Solution
E. Formalin
No correct answers
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