Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

The Chen test is a chemical test used to

Question 5

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

Accepted Answer

The Mecke reagent test is a chemical tes

Question 6

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

Accepted Answer

The ferric chloride test is a qualitativ

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

The incidence of fentanyl and carfentani

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

An investigator might choose not to use

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

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

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

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

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

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

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

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

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

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

An Introduction to Forensic Chemistry and Physical Evidence

The Microscope

Light Spectroscopy

Advanced Spectroscopy

Chromatography

Inorganic Poisons and Contaminants

Controlled Substances

Toxicology

Trace Evidence

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Exam 2: Chemical Tests

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

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

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

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

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

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

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

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

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

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

An Introduction to Forensic Chemistry and Physical Evidence

The Microscope

Light Spectroscopy

Advanced Spectroscopy

Chromatography

Inorganic Poisons and Contaminants

Controlled Substances

Toxicology

Trace Evidence

Questioned Documents and Impression Evidence

Latent Print Development

Firearms

Arson and Explosives

Cbrne Chemical, Biological, Radiological, Nuclear and Explosives

Environmental Forensics

Filters