Deck 2: Chemical Tests

Question 1

Which of the following chemical tests is the best first screening test for drugs?

A) Marquis
B) Chen's
C) Duquenois-Levine
D) Zimmerman's

Answer 1

A

Question 2

The Duquenois-Levine test is a screening test for _____.

A) heroin
B) marijuana
C) cocaine
D) psilocin
E) caffeine

Answer 2

B

Question 3

____ tests identify drugs by the size and shape of their crystals formed when the drug is mixed with specific reagents.

A) HPLC
B) color
C) TLC
D) microcrystalline

Answer 3

D

Question 4

Which of the following chemical tests is a screening test for cocaine?

A) Marquis
B) Scott's
C) Duquenois-Levine
D) Van Urk's

Question 5

A white precipitate is a positive result with this test used to detect the presence of alkaloids.

A) Dillie-Koppanyi
B) Scott
C) Duquenois-Levine
D) Marquis
E) Mayer's

Question 6

Why would an investigator NOT use color tests at a crime scene?

Question 7

Chemically, how does the Mecke test work? Be specific using morphine as your example.

Question 8

Chemically, how does the ferric chloride test work? Be specific using salicylates acid as your example.

Question 9

Chemically, how does the Chen test work? Be specific using ephedrine as your example.

Question 10

Explain how the incidence of fentanyl and carfentanil cases has altered drug testing approaches.