Test 1 Forensic Chemistry
Exam Review & Study
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Updated 2026 Questions and Answers
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Included
,A red nylon fiber with a circular cross section is a. Inclusive.
identified at the crime scene. A suspect wearing a red
nylon windbreaker is arrested. Nylon fibers from the
windbreaker (often labeled K for "known") are
subjected to the same tests as was the fiber in question
(Q) from the scene, with similar results. This is an
example of ______ evidence
a. Inclusive.
b. Exclusive.
c. Direct.
d. Indirect.
If the exhibit is one tiny paint chip, the ideal analysis a. Microspectrophotometry
would be
a. Microspectrophotometry
b. Solubility test
Which of the following ruling that held evidence a. The Frye Rule
produced by scientific analysis is admissible as long as
the techniques are accepted as valid by the relevant
scientific community?
a. The Frye Rule
b. Daubert v. Merreell Dow Pharmaceuticals
c. General Electric v. Joiner
d. Kumho Tire Co., Ltd. V. Carmichael
Which of the following ruling that stressed the need to c. General Electric v. Joiner
weigh the relevancy of the data to the question at
hand?
a. The Frye Rule
b. The Daubert Decision
c. General Electric v. Joiner
d. Kumho Tire Co., Ltd. V. Carmichael
Infrared spectrophotometry of paint chips can be c. Definitive identification
categorized as
a. Presumptive tests
b. Screening tests
c. Definitive identification
d. Quantitative analysis
, In a large population of measurements, the relative a. Gaussian
frequency of occurrence of measurement versus error
of measurement is usually plotted and a curve is
obtained. The shape of the curve is usually
a. Gaussian
b. Rectangular
c. Trapezoid
d. Triangular
As part of an apprenticeship, a trainee in a forensic a. Forensic chemist
chemistry laboratory is tasked with determining the
concentration of cocaine in a white powder. The
powder was prepared by the QA section of the
laboratory and the accepted true value was 13.2%.
However, the concentration of cocaine is not known to
the trainee (who has a blind sample). The trainee's
supervisor is given the same sample with the same
constraints. The table in the following shows the result
of 10 replicate analyses (n =10) made by the two
chemists. Suppose the supervisor and the trainee both
ran one extra analysis independently under the same
conditions and obtained a concentration of 11.0%
cocaine. Is that datum suspect for the forensic chemist,
the trainee, neither of them, or both of them at the 5%
level (95% confidence)? Please use Grubbs test.
Sample Trainee Forensic Chemist
1 12.7 13.5
2 13.0 13.1
3 12.0 13.1
4 12.9 13.2
5 12.6 13.4
6 13.3 13.1
7 13.2 13.2
8 11.5 13.7
9 15.0 13.2
10 12.5 13.2
a. Forensic chemist
b. Trainee
c. Neither of them
d. Both of them
Exam Review & Study
Guide
| Guaranteed success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,A red nylon fiber with a circular cross section is a. Inclusive.
identified at the crime scene. A suspect wearing a red
nylon windbreaker is arrested. Nylon fibers from the
windbreaker (often labeled K for "known") are
subjected to the same tests as was the fiber in question
(Q) from the scene, with similar results. This is an
example of ______ evidence
a. Inclusive.
b. Exclusive.
c. Direct.
d. Indirect.
If the exhibit is one tiny paint chip, the ideal analysis a. Microspectrophotometry
would be
a. Microspectrophotometry
b. Solubility test
Which of the following ruling that held evidence a. The Frye Rule
produced by scientific analysis is admissible as long as
the techniques are accepted as valid by the relevant
scientific community?
a. The Frye Rule
b. Daubert v. Merreell Dow Pharmaceuticals
c. General Electric v. Joiner
d. Kumho Tire Co., Ltd. V. Carmichael
Which of the following ruling that stressed the need to c. General Electric v. Joiner
weigh the relevancy of the data to the question at
hand?
a. The Frye Rule
b. The Daubert Decision
c. General Electric v. Joiner
d. Kumho Tire Co., Ltd. V. Carmichael
Infrared spectrophotometry of paint chips can be c. Definitive identification
categorized as
a. Presumptive tests
b. Screening tests
c. Definitive identification
d. Quantitative analysis
, In a large population of measurements, the relative a. Gaussian
frequency of occurrence of measurement versus error
of measurement is usually plotted and a curve is
obtained. The shape of the curve is usually
a. Gaussian
b. Rectangular
c. Trapezoid
d. Triangular
As part of an apprenticeship, a trainee in a forensic a. Forensic chemist
chemistry laboratory is tasked with determining the
concentration of cocaine in a white powder. The
powder was prepared by the QA section of the
laboratory and the accepted true value was 13.2%.
However, the concentration of cocaine is not known to
the trainee (who has a blind sample). The trainee's
supervisor is given the same sample with the same
constraints. The table in the following shows the result
of 10 replicate analyses (n =10) made by the two
chemists. Suppose the supervisor and the trainee both
ran one extra analysis independently under the same
conditions and obtained a concentration of 11.0%
cocaine. Is that datum suspect for the forensic chemist,
the trainee, neither of them, or both of them at the 5%
level (95% confidence)? Please use Grubbs test.
Sample Trainee Forensic Chemist
1 12.7 13.5
2 13.0 13.1
3 12.0 13.1
4 12.9 13.2
5 12.6 13.4
6 13.3 13.1
7 13.2 13.2
8 11.5 13.7
9 15.0 13.2
10 12.5 13.2
a. Forensic chemist
b. Trainee
c. Neither of them
d. Both of them
