CH 1
Expert witnesses may work in
a. private forensic labs
b. academic labs
c. public forensics labs
d. all of the above
all of the above
_______ tests identify drugs by the size and shape of their crystals formed when the drug is mixed with specific reagents
What type of lens is on a microscope that allows the view to remain in focus even while changing the lenses?
a. Parfocal
b. Bifocal
c. Parfait
d. Trifocal
Parfocal
Which law states that the light absorbed is directly proportional to the concentration of the compounds in the solution?
a. Raman's Law
b. Beer's Law
c. UV-Vis Law
d. Spectroscopy Law
Beer's Law
The technique of _____ can employ chemical processes to fragment molecules
a. NMR
b. HPLC
c. mass spectroscopy
d. IR spectroscopy
Mass spectroscopy
What is the correct definition of Criminalistics?
a. a branch of science devoted to determining the time, manner, and cause of death
b. a branch of science devoted to determining genetic lineage
c. A branch of forensic science that applies science to the law through the recognition, documentation, collection, and analysis of physical evidence
d. the branch of science devoted to the application of science to the criminal and civil law that are enforced by police agencies in the criminal justice system
a branch of forensic science that applies science to law through the recognition, documentation, collection, preservation, and analysis of physical evidence
What chemical test is the best first screening test for drugs?
a. Zimmerman's
b. Marquis
c. Chen's
d. Duquenois-Levine
Marquis
The method of adjusting the light onto an object that eliminates the filament image of the light source on the object is what:
a. Absorbance
b. Resolution
c. Kohler Illumination
d. Michael-Levy chart
Kohler Illumination
Which spectroscopic method can be used to analyze paint, drugs, explosives, fibers, and soil?
a. Fluorescence spectroscopy
b. Raman spectroscopy
c. UV-Vis spectroscopy
d. IR Spectroscopy
IR Spectroscopy
Which ionization methods are commonly used in GCMS?
a. Spark ionization and electron impact ionization
b. plasma desorption and chemical ionization
c. Chemical ionization and photoionization
d. Chemical ionization and electron impact ionization
Chemical ionization and electron impact ionization
What is Category A of SWGDRUG defined as and what is an example?
highest maximum potential discriminating power
ex. infrared spectroscopy
A white precipitate is a positive result with this test used to detect the presence of alkaloids
a. Scott
b. Dillie-Koppanyi
c. Marquis
d. Mayer's
e. Duquenois-Levine
Mayer's
What you see under a compound light microscope is a ____ image
a. real
b. virtual
virtual
Typically, in infrared spectroscopy, as the mass of the item increases, the frequency absorbed ____
a. increases
b. decreases
decreases
To determine the presence of fentanyl or its derivatives by its mass and fingerprint, _____ should be used
a. HPLC
b. MS
c. TLC
d. GC
MS
What is Category C of SWGDRUG defined as and what is an example?
lowest potential discriminating power
ex. color tests
The Duquenois-Levine test is a screening test for___
a. heroin
b. cociane
c. marijuana
d. caffiene
e. psilocin
Marijuana
T/F: The color red has a shorter wavelength than violet
False
In a Raman spectrophotometer, a ____ is used to project light onto the sample
a. LED light
b. laser
c. light bulb
d. flash light
laser
In which analyzer do the lighter ions pass through the drift tube faster than the heavier ones?
a. Magnetic Sector
b. TOF
c. Quadrupole
TOF
A function of a forensic scientist includes:
a. analysis of physical evidence
b. furnishing training on the proper collection of physical evidence
c. providing expert testimony
d. all of the above
all of the above
Which of the following chemical tests is a screening test for cocaine?
a. Van Urk's
b. Marquis
c. Scott's
d. Duquenois-Levine
Scott's
The polarizing compound light microscope would be useful for differentiating:
a. cotton fiber
b. animal fibers
c. synthetic fibers
d. human hair
synthetic fibers
To quantify drugs in urine, scientists may use:
a. SEM
b. UV-Vis spectroscopy
c. Raman spectroscopy
d. IR spectroscopy
UV-Vis Spectroscopy
Which chemical is used for calibration of a GCMS?
a. PFOA
b. PFTBA
c. PTFE
d. PCTFE
PFTBA