Deck 5: Physical Evidence

Question 1

Which substance is NOT normally used as a diluent of heroin?

A) procaine
B) mannitol
C) quinine
D) glucose
E) starch

Answer 1

D

Question 2

Which is NOT an effect of marijuana use?

A) dryness of the mouth
B) decrease in appetite for sweets
C) increased heart rate
D) reddening of the eyes
E) impaired motor skills

Answer 2

B

Question 3

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

A) marijuana
B) cocaine
C) alcohol
D) heroin
E) methadone

Answer 3

A

Question 4

What is the most potent form of marijuana?

A) hashish
B) liquid hashish
C) loose vegetation
D) sinsemilla
E) none of the above

Question 5

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

A) mescaline
B) LSD
C) PCP
D) cocaine
E) marijuana

Question 6

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

A) 25%
B) 60%
C) 90%
D) 75%
E) 35%

Question 7

Which part of cannabis contains the LEAST amount of THC?

A) leaf
B) flower
C) bud
D) seeds
E) resin

Question 8

Which physical symptom is part of the abstinence syndrome?

A) hallucinations
B) body chills
C) stomach cramps and vomiting
D) convulsions
E) all of the above

Question 9

Which drug is often incorrectly classified as a narcotic?

A) morphine
B) codeine
C) heroin
D) marijuana
E) opium

Question 10

A low dose of alcohol will NOT inhibit:

A) confidence.
B) judgment.
C) concentration.
D) memory.
E) all of the above

Question 11

Which barbiturate is absorbed more slowly than the others?

A) butabarbital
B) secobarbital
C) pentobarbital
D) amobarbital
E) phenobarbital

Question 12

The use of which drug will NOT lead to physical dependence?

A) cocaine
B) barbiturates
C) alcohol
D) nicotine
E) heroin

Question 13

Most narcotics are:

A) physically addicting.
B) depressants to the central nervous system.
C) pain relievers.
D) obtained from opium.
E) all of the above

Question 14

Use of which of the following drugs is LEAST likely to lead to psychological dependence?

A) alcohol
B) nicotine
C) cocaine
D) codeine
E) heroin

Question 15

Which of the following is the most widely used and abused drug?

A) marijuana
B) heroin
C) amphetamine
D) cocaine
E) alcohol

Question 16

What is NOT true about codeine?

A) It is prepared synthetically from morphine.
B) It is present in opium.
C) It is a component in over-the-counter cough medicine.
D) It is stronger than morphine.
E) It is not commonly seen as a street drug.

Question 17

Which of the following is NOT derived from opium?

A) heroin
B) morphine
C) codeine
D) marijuana
E) none of the above

Question 18

The pattern and intensity of dependency on a drug does not depend on the:

A) cost of the drug.
B) bioavailability of the active metabolite.
C) individual's rate of metabolism.
D) frequency of administration.
E) dose and route of administration.

Question 19

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

A) methadone
B) methamphetamine
C) OxyContin
D) codeine
E) morphine

Question 20

Marijuana has potential use in which medical application?

A) useful as a muscle relaxant
B) reduction of excessive eye pressure in glaucoma
C) lessening of nausea caused by anticancer drugs
D) all of the above
E) none of the above

Question 21

Methamphetamine is a:

A) stimulant.
B) hallucinogen.
C) depressant.
D) tranquilizer.
E) none of the above

Question 22

Most often, cocaine is:

A) snorted.
B) swallowed.
C) smoked.
D) injected.
E) none of the above

Question 23

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

A) the same as
B) less than
C) greater than

Question 24

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

A) LSD.
B) GHB.
C) PCP.
D) THC.
E) MDMA.

Question 25

Barbiturates act to:

A) suppress central nervous system functions.
B) produce sleep.
C) promote relaxation.
D) create a feeling of well-being.
E) all of the above

Question 26

The Controlled Substance Act established five schedules of classification for substances based on a drug's:

A) potential for psychological dependence.
B) potential for abuse.
C) potential for physical dependence.
D) medical value.
E) all of the above

Question 27

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

A) heroin.
B) cocaine.
C) methadone.
D) either A or B
E) either A or C

Question 28

The Dillie-Koppanyi reagent is useful in screening for:

A) marijuana.
B) amphetamines.
C) opiates.
D) barbiturates.
E) cocaine.

Question 29

The sniffing of volatile solvents can cause:

A) feelings of exhilaration and euphoria.
B) slurred speech and double vision.
C) liver, heart, and brain damage.
D) drowsiness and stupor.
E) all of the above

Question 30

The most difficult drug addiction to overcome is that of:

A) crack cocaine.
B) alcohol.
C) heroin.
D) caffeine.
E) nicotine.

Question 31

"Designer" drugs are:

A) high-end products of the major pharmaceutical companies.
B) often abused by the wealthy.
C) only available in "boutique" pharmacies and drug stores.
D) chemically related to controlled substances.
E) very often used in the fashion industry.

Question 32

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

A) cocaine.
B) heroin.
C) valium.
D) morphine.
E) marijuana.

Question 33

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

A) gas chromatography
B) taste
C) TLC
D) microcrystalline
E) color

Question 34

Scott Test solutions can indicate the presence of:

A) heroin.
B) codeine.
C) cocaine.
D) marijuana.
E) Librium.

Question 35

Cocaine is a(n):

A) depressant.
B) stimulant.
C) hallucinogen.
D) hypnotic.
E) opiate.

Question 36

Which statement is true of the use of mild tranquilizers?

A) They reduce tension.
B) They do not produce dependency.
C) They are never used in the treatment of mental health disorders.
D) They induce sleep.
E) They impair high-thinking faculties.

Question 37

What is true about the "club drug" Rohypnol?

A) It can cause drowsiness, dizziness, and loss of consciousness.
B) It is odorless, colorless and tasteless.
C) It results in loss of memory of what happened in the hours after ingestion.
D) It is enhanced when combined with alcohol.
E) all of the above

Question 38

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

A) greater than
B) the same as
C) less than

Question 39

MDMA (Ecstasy) does NOT cause:

A) increased inhibition.
B) confusion, anxiety and paranoia.
C) increased heart rate and blood pressure.
D) hallucinogenic and amphetamine-like effects.
E) feelings of happiness and relaxation.

Question 40

What is NOT true of the use of anabolic steroids?

A) They can greatly enhance strength and general athletic performance.
B) They can cause masculinizing effects in females.
C) They can cause depression.
D) They can cause unpredictable effects on mood and personality.
E) They can produce infertility and diminished sex drive in males.

Question 41

There is a significant likelihood that continued use of ___________ will result in a high degree of psychological dependence.

A) cocaine
B) amphetamines
C) heroin
D) marijuana
E) all of the above

Question 42

Regular use of the following drug may lead to physical dependency:

A) aspirin
B) ethyl alcohol
C) marijuana
D) LSD
E) caffeine

Question 43

Which of the following statements is false?

A) Marijuana can tentatively be identified by the Duquenois-Levine color test.
B) The active ingredient of marijuana is tetrahydrocannabinol.
C) Hashish is a concentrated preparation of marijuana.
D) Marijuana is synthesized from the Cannabis sinsemilla plant.
E) Prior to 1970 marijuana was classified as a narcotic drug.

Question 44

Heroin is a chemical derivative of:

A) morphine
B) codeine
C) barbituric acid
D) amphetamine
E) methadone

Question 45

The quantity of a substance separated by gas chromatography can be determined by its:

A) R value.
B) peak area.
C) total electric charge.
D) retention time.
E) IR absorption profile.

Question 46

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

A) V
B) IV
C) III
D) I
E) II

Question 47

Which of the following is NOT a part of a simple spectrophotometer?

A) column
B) radiation source
C) sample cell
D) CCD camera
E) monochrometer

Question 48

Which absorption spectrum is equivalent to a "fingerprint" of a substance?

A) x-ray
B) UV
C) visible
D) IR
E) No absorption spectrum is sufficiently complex as to be unique.

Question 49

The details of the pattern of an infrared (IR) spectrograph are ________ the details of an ultraviolet (UV) spectrograph.

A) less than
B) greater than
C) the same as

Question 50

Which of the following is not a depressant?

A) ethyl alcohol
B) Valium
C) Librium
D) methaqualone
E) all of the above are depressants

Question 51

Marijuana is considered to be a:

A) stimulant
B) hallucinogen
C) depressant
D) narcotic
E) tranquilizer

Question 52

Thin-layer chromatography was performed and four spots were visualized on the glass slide. The substance with which R value was least soluble in the stationary phase?

A) R value .5
B) R value 8.5
C) R value .7
D) R value .2
E) R value 10.0

Question 53

A big drawback of gas chromatography is that it does not produce specific identification. This problem is overcome by connecting the GC to a:

A) computer.
B) TLC.
C) GRIM 3.
D) MS.
E) HPLC.

Question 54

Spectrophotometry utilizes which light source?

A) visible
B) infrared
C) UV
D) all of the above
E) none of the above

Question 55

Which of the following is not a stimulant?

A) ethyl alcohol
B) caffeine
C) amphetamine
D) cocaine
E) all of the above are stimulants

Question 56

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

A) opium
B) ethyl alcohol
C) amphetamine
D) cocaine
E) morphine

Question 57

TLC uses ________ as its moving phase.

A) a gas
B) silica gel
C) a thin film
D) a carrier gas
E) liquid

Question 58

Spectrophotometry can be used for:

A) chemical identification of a substance.
B) quantification of a substance.
C) identifying the source of a substance.
D) both A and B
E) neither A nor B

Question 59

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

A) GC
B) UV spectrophotometry
C) IR spectrophotometry
D) TLC
E) GC/MS

Question 60

Which chromatographic process would be LEAST likely to be utilized in the crime lab?

A) gas chromatography-mass spectrometry
B) TLC
C) paper chromatography
D) GC
E) None, all are used with equal frequency.

Question 61

Name and classify the most commonly abused drugs using the six major drug classifications system. Cite at least two specific drugs for each category excluding the Anabolic Steroid category.

Question 62

Explain the difference between thin layer chromatography (TLC) and gas chromatography.

Question 63

Describe the five "Schedules" of the Controlled Substance Act and cite an example for each schedule.

Question 64

Describe the process that a laboratory uses to perform a routine drug identification analysis.

Question 65

Briefly describe the proper collection techniques for the preservation of drug evidence.

Question 66

Diagram and describe the process of chromatography.

Question 67

Explain the difference between a qualitative and quantitative test.

Question 68

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

A) II
B) V
C) III
D) IV
E) I

Question 69

Compare and contrast the clinical aspects of psychological and physical drug dependency.

Question 70

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

A) GHB
B) Rohypnol
C) MDMA
D) ketamine
E) all of the above

Question 71

Which of the following is considered to be a hallucinogen?

A) mescaline
B) psilocybin
C) phencyclidine (PCP)
D) STP
E) all of the above are hallucinogens