Forensic Science 3

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

QUESTION 4ANSWER

a.

Partition coefficient

b.

Rf value

c.

Retention time

d.

Carrier gas

Retention time

Chromatography is NOT used to:

QUESTION 5ANSWER

a.

Aid in analysis of illicit drug preparations

b.

Determine colors of a compound

c.

Separate molecules in a mixture

d.

Tentatively identify molecules

Determine colors of a compound

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?

QUESTION 7ANSWER

a.

III

b.

IV

c.

II

d.

I

II

Heroin is a chemical derivative of:

QUESTION 8ANSWER

a.

Barbituric acid

b.

Codeine

c.

Morphine

d.

Methadone

Morphine

Methamphetamine is a: 

QUESTION 9ANSWER

a.

Tranquilizer 

b.

Stimulant

c.

Hallucinogen

d.

Depressant

Stimulant

Most narcotics are:

QUESTION 10ANSWER

a.

Physically addicting 

b.

Depressants to the central nervous system 

c.

All of these

d.

Obtained from opium 

All of these

The Dillie-Koppanyi reagent is useful in screening for:

QUESTION 11ANSWER

a.

Marijuana

b.

Opiates

c.

Barbiturates

d.

Amphetamines

Barbiturates

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

QUESTION 12ANSWER

a.

Methadone

b.

Cocaine

c.

Heroin 

d.

Both Heroin and Cocaine

Heroin 

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

QUESTION 13ANSWER

a.

Barbiurates

b.

Alcohol

c.

Heroin 

d.

Cocaine

Cocaine

What is NOT true of the use of anabolic steroids?

QUESTION 14ANSWER

a.

They can greatly enhance strength and general athletic performance

b.

They can cause masculinizing effects in females

c.

They can cause unpredictable effects on mood and personality

d.

They can produce infertility and diminished sex drive in males

They can greatly enhance strength and general athletic performance

What is true about the “club drug” Rohypnol?

QUESTION 15ANSWER

a.

Above of these

b.

It is enhanced when combined with alcohol.

c.

It results in loss of memory of what happened in the hours after ingestion.

d.

It is odorless, colorless, and tasteless 

Above of these

Which absorption spectrum is equivalent to a “fingerprint” of a substance and can be used for identification purposes?

QUESTION 16ANSWER

a.

IR

b.

UV

c.

X-ray

d.

Visible

IR

Which drug is often incorrectly classified as a narcotic?

QUESTION 17ANSWER

a.

Heroin

b.

Morphine

c.

Marijuana

d.

Codeine 

Marijuana

Which is NOT derived from opium?

QUESTION 19ANSWER

a.

Cocaine

b.

Morphine

c.

Marijuana

d.

Heroin

Marijuana

Which is the most widely used and abused drug?

QUESTION 20ANSWER

a.

Cocaine

b.

Alcohol

c.

Herion

d.

Marijuana

Alcohol

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

QUESTION 21ANSWER

a.

Color test

b.

Infrared spectrophotometry 

c.

Microcystalline test

d.

Thin-layer chromatography

Infrared spectrophotometry 

Which of the following are considered to be “club drugs”?

QUESTION 22ANSWER

a.

Ketamine

b.

MDMA

c.

All of these

d.

Rohypnol

All of these

Which of the following best defines the term "qualitative"?

QUESTION 24ANSWER

a.

 A type of data that is descriptive and involves characteristics that cannot be counted.

b.

A method of statistical analysis used to interpret numerical data

c.

A type of data that can be measured and expressed numerically.

d.

A method of statistical analysis used to interpret numerical data. 

 A type of data that is descriptive and involves characteristics that cannot be counted.

Which of the following best defines the term "quantitative"?

QUESTION 26ANSWER

a.

A process of interpreting descriptive data through thematic analysis

b.

A type of data that can be measured and expressed numerically.

c.

A type of data that is descriptive and involves characteristics that cannot be counted.

d.

A method of organizing data into categories based on non-numerical values.

A type of data that can be measured and expressed numerically

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

QUESTION 28ANSWER

a.

 Morphine

b.

Opium

c.

Amphetamine

d.

Cocaine

Amphetamine

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

QUESTION 29ANSWER

a.

UV spectrophotometry

b.

GC/MS

c.

GC

d.

IR spectrophotometry

GC/MS

Which type of test would the drug analyst logically use first?

QUESTION 30ANSWER

a.

Color

b.

TLC

c.

Microcrystalline

d.

Gas chromatography

Color

A substance with a pH of 8 is likely to be:

QUESTION 35ANSWER

a.

Acidic

b.

Basic

c.

Neutral

d.

water

Basic

About 95-98 percent of alcohol is oxidized to what two substances?

QUESTION 36ANSWER

a.

Water and carbon dioxide 

b.

Water and acetic acid

c.

Carbon dioxide and dehydrogenase

d.

Acetaldehyde and acetic acid

Water and carbon dioxide 

After a blood sample is collected for alcohol testing, a(n) ________ is added to stop the blood from clotting.

QUESTION 37ANSWER

a.

Anticoagulant 

b.

Monochromator

c.

Fuel Cell 

d.

Preservative

Anticoagulant

Alcohol is eliminated from the body chemically unchanged in

QUESTION 38ANSWER

a.

Perspiration

b.

Breath

c.

Urine

d.

All of these

All of these

Alcohol is oxidized in the body primarily in:

QUESTION 39ANSWER

a.

The stomach 

b.

The small intestine

c.

The liver

d.

The lungs

The liver

Blood is drawn from a living suspect involved in an automobile accident. If the specimen is kept unrefrigerated and at a moderately warm temperature, the alcohol concentration can be expected to:

QUESTION 40ANSWER

a.

Remain unchanged

b.

Either increase or decrease with time

c.

Increase with time

d.

Decrease with time

Decrease with time

Blood samples taken for alcohol testing must be taken only with the driver’s consent according to:

QUESTION 41ANSWER

a.

The Frye standard

b.

Missouri v. McNeely

c.

Schmerber v. California

d.

The Fifth Amendment

Missouri v. McNeely

Carbon monoxide is toxic because it:

QUESTION 42ANSWER

a.

Destroys red blood cells

b.

Causes platelets to clump

c.

Activates killer white blood cells

d.

Combines with hemoglobin to form carboxyhemoglobin

Combines with hemoglobin to form carboxyhemoglobin

Field sobriety tests that can be employed to ascertain the degree of an individual’s alcohol impairment normally do NOT include the following:

QUESTION 43ANSWER

a.

Horizontal gaze nystagmus

b.

Portable roadside breath tester

c.

Walk and turn

d.

Gas chromatography

Gas chromatography

For the purpose of extracting the drug out of body tissues, an amphetamine is classified as an: 

QUESTION 44ANSWER

a.

Neutral drug

b.

None of these.

c.

Acidic drug

d.

Basic drug

Basic drug

In forensic toxicology, all positive drug findings must be confirmed by a specific chemical test. The confirmation test of choice is:

QUESTION 45ANSWER

a.

Ultraviolet spectrophotometry 

b.

Infrared spectrophotometry

c.

Gas chromatography-mass spectrometry

d.

Gas chromatography

Gas chromatography-mass spectrometry

Of the following, which is an acid drug? 

QUESTION 46ANSWER

a.

Methadone

b.

PCP

c.

Cocaine

d.

Aspirin

Aspirin

Some breath-testing devices for alcohol use ________ light to measure the quantity of alcohol trapped in a chamber.

QUESTION 47ANSWER

a.

Visible 

b.

Colored

c.

Infrared 

d.

Ultraviolet

Infrared 

The amount of alcohol absorbed through the stomach walls is ________ the amount of alcohol absorbed through the walls of the small intestine.

QUESTION 48ANSWER

a.

None of these.

b.

The Same

c.

Greater Than

d.

Less Than

Less Than

The blood alcohol concentration level for being presumed to be legally “under the influence” in most states is:

QUESTION 49ANSWER

a.

0.10%

b.

0.04%

c.

0.05%

d.

0.08%

0.08%

The elimination or “burn off” rate of alcohol averages ________ percent w/v per hour.

QUESTION 50ANSWER

a.

0.015

b.

0.15

c.

0.05

d.

0.10

0.015

The presence of high levels of carbon monoxide in the blood of a victim found at the scene of a suspicious fire is proof that the victim

QUESTION 51ANSWER

a.

Died elsewhere and was brought to the fire scene after death

b.

Died before the fire started

c.

Was the arsonist

d.

Died after the fire started

Died after the fire started

The rate of alcohol absorption on a full stomach is ________ the rate of absorption on an empty stomach.

QUESTION 52ANSWER

a.

None of these.

b.

Greater than

c.

The same as

d.

Less than

Less than

he Reinsch test would NOT be used to detect:

QUESTION 53ANSWER

a.

Mercury

b.

Copper

c.

Arsenic

d.

Bismuth

Copper

There is a(n) ________ relationship between the amount of alcohol in the blood and that in the alveolar breath.

QUESTION 55ANSWER

a.

Indirect

b.

Vairable

c.

Undetermined

d.

Direct

Direct

Which analytical technique is widely used for directly measuring the amount of alcohol present in the blood?

QUESTION 56ANSWER

a.

Ultraviolet spectrophotometry

b.

Infrared spectrophotometry

c.

Thin-layer chromatography

d.

Gas chromatography

Gas chromatography

Which of the following is NOT classified as a heavy metal?

QUESTION 57ANSWER

a.

Mercury

b.

Thallium

c.

Arsenic

d.

Lead

Lead

Which of the following statements is FALSE?

QUESTION 58ANSWER

a.

Alcohol is distributed nearly evenly throughout water portions of the body by blood.

b.

Alcohol is broken down in the liver by oxidation.

c.

The mass spectrometer measures the absorption of light by alcohol.

d.

Alcohol can be considered a brain depressant.

The mass spectrometer measures the absorption of light by alcohol.