Chapter 11 Drugs Review

Psychological dependence is defined as the physiological need for a drug that has been brought about by its regular use. True or False?

False

The distribution of a substance between a mobile and stationary phase describes spectrophotometry.

False

Which technique allows for both separation and specific identification of a questioned mixture of substances?

GC/Ms

Marijuana is considered to be a :

Hallucinogen

A police officer performs a field test on a white powder, obtaining a purple color. The most likely drug present is:

Heroin

Drugs deemed to have potential for abuse and having a current medical use are listed in which schedule of Controlled Substances Act?

II

Which absorption spectrum is equivalent to a "fingerprint" of substances and can be used for identification purposes?

IR

The tranquilizers Valium and Librium are classified in which schedule of the Controlled Substances Act?

IV

Which of the following analytical technique is considered to be a specific test in a drug identification scheme?

Infrared spectrophotometry

The Van Urk reagent was used to test a sample and it turned blueish-purple. This indicates the presence of:

LSD

TLC uses _________ as its moving phase.

Liquid

Gas chromatography suffers a big drawback in that it does not produce specific identification. This problem is overcome by connecting the Gc to a:

MS.

Which is NOT derived from opium?

Marijuana

Which is the most widely used illicit drug in the United States today?

Marijuana

The reagent used for the field test of heroin is:

Marquis

The administration of which drug eliminates an addict's desire for heroin?

Methadone

Which hallucinogen can be synthesized by a simple chemical process and is often manufactured in clandestine labs?

PCP

Which barbiturate is absorbed more slowly than the others?

Phenobarbital

Gas chromatography cannot be considered an absolute means of identification. True or False?

True

Physical dependence develops only when the drug user uses a drug on a regular schedule. True or False?

True

Resin has higher concentrations of THC than the flowers of the Cannabis plant. True or False

True

Which physical symptom is part of the abstinence syndrome?

all of the above- body chills, stomach cramps and vomiting, convulsions

Barbiturates act to:

all of the above- create a feeling of well-being, produce sleep, promote relaxation

The sniffing of volatile solvents can cause:

all of the above- drowsiness and stupor, feelings of exhilaration and euphoria, slurred speech and double vision

The Controlled Substance Act established five schedules of classification for substances bases on the drugs:

all of the above- medical value, potential for psychological dependence, potential for physical dependence

Most narcotics are:

all of the above- obtained from opium, physically addicting, depressants to the central nervous system

Which of the following are considered to be "club drugs"?

all the above- MDMA, Rohypnol, Ketamine

Scott Test solutions can indicate the presence of :

cocaine

The most difficult drug addiction to overcome is that of:

crack cocaine

Which of the following is not a stimulant? Coke, ethyl alc, caffeine, amphetamine?

ethyl alcohol

Many chemical substances have similar mass spectra fragments fragmentation.

false

The specificity of microcrystalline tests in ________ the specificity of color tests.

greater than

The Marquis Reagent was used on drug evidence and it turned purple. The drug being tested could be :

heroin

The ability to make a positive identification of a drug using UV spectrophotometry is __________ the ability to make a positive identification using IR spectrophotometry.

less than

Duquenois-Levine solutions were used on a sample and the chloroform layer turned purple. THis suggests that the tested substance is::

marijuana

Heroin is chemical derivative of :

morphine

A compound can tentatively be identified by gas chromatography from its:

retention time

Which part of cannabis contains the LEAST amount of THC?

seeds

Most often, cocaine is:

snorted

Cocaine is a :

stimulant

methamphetamine is a:

stimulant

What is the percentage of evidence evaluated in the crime lab that is drug-related?

75%

Which is the most widely used and abused drug?

Alcohol

Which of the following is considered to be hallucinogen?

All of the above- mescaline, psilocybin, phencyclidine(PCP)

Which of the following is synthetically produced and does not occur naturally?

Amphetamine

The Dillie- Koppanyi reagent is useful in screening for:

Barbiturates

"Designer" drugs are:

Chemically related to controlled substances

The most satisfactory way of simultaneously separating and tentatively identifying drugs is by:

Chromtography

Which type of test would logically be used first by the drug analyst?

Color

A low dose of alcohol will NOT inhibit:

Confidence