Deck 6: Systems of Measurement, laboratory Equipment, and Reagents

Question 1

The purest grade of chemicals used in the preparation of reagents is ____ grade.

A) analytic (AR)
B) chemically pure (CP)
C) United States Pharmacopeia (USP) and National Formulary (NF)
D) technical or commercial

Answer 1

analytic (AR)

Question 2

The labels on bottles should include:

A) the name and concentration of the reagent.
B) the date on which the reagent was prepared.
C) the initials of the person who made the reagent.
D) all of the above.

Answer 2

all of the above.

Question 3

The purpose of a material safety data sheet (MSDS)is to provide information about:

A) possible hazards.
B) safe handling instructions.
C) storage and disposal of the specific chemical that it accompanies.
D) all of the above.

Answer 3

all of the above.

Question 4

A pipette that has been calibrated to deliver a fixed volume of liquid by drainage is known as ____ pipette.

A) a volumetric
B) a serologic
C) a graduated
D) both b and c

Question 5

The purest grade of reagent water is:

A) deionized.
B) type I.
C) type II.
D) type III.

Question 6

Distilled water is defined as water from which:

A) iron, magnesium, calcium, and other minerals have been removed by heating and cooling the vapor.
B) ions have been removed by charcoal filters.
C) microbiological organisms have been removed.
D) All of the above are correct.

Question 7

What is the standard unit of volume in the metric system?

A) Meter
B) Gram
C) Liter
D) Feet

Question 8

The ____ balance is the most commonly used balance in a clinical laboratory.

A) mechanical analytical
B) electronic analytical
C) triple beam
D) None of the above are correct.

Question 9

In the process of deionization,water is:

A) heated and cooled to liquefy the condensation.
B) passed through a resin column containing positively (+) and negatively (-) charged particles.
C) first heated and then passed through a resin column containing charged particles.
D) both b and c.

Question 10

A reagent is defined as:

A) any concentrated solution used for testing.
B) any substance used to produce a chemical reaction.
C) a solution contained in an instrument.
D) a solution with a known concentration.

Question 11

What is the standard unit for the measurement of length in the metric system?

A) Meter
B) Gram
C) Liter
D) Feet

Question 12

Type I reagent water must be used ____ after its production.

A) immediately
B) within 1 working day
C) within 24 hours
D) within a month

Question 13

Solutions prepared from the most highly purified types of chemicals available are ____ solutions.

A) reagent
B) standard
C) molar
D) acidic

Question 14

Convert 50° F to ° C (Celsius).

A) 5
B) 10
C) 20
D) 40

Question 15

Convert 20° C to ° F.

A) 32
B) 46
C) 68
D) 100

Question 16

Each new lot or batch of reagent should be tested with ____ with the existing reagent.

A) controls
B) standards
C) calibrators
D) all of the above

Question 17

Flammable solvents should be stored in:

A) a refrigerator.
B) a freezer.
C) special safety cans.
D) a draft-free location.