Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Review > Analytical Chemistry > Flashcards

Analytical Chemistry Flashcards

1
Q

A type of analysis in terms of sample size that can resolve fine-scale variations in chemical elements, as well as determine the presence and distribution of different phases in materials.
A. Macro
B. Semi-macro
C. Micro
D. Ultra-micro

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

An analyst determines that the analytical balance he used in a given analytical test is wrongly calibrated. Determine what type of error is represented.
A. Systematic error
B. Random error
C. Gross error
D. Cannot be determined

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The dynamic range in analytical measurement refers to the range where ______
A. the detection limit lies
B. the instrument reading is constant
C. the sensitivity of the instrument is highest
D. instrument reading linear to the input value

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

It is a non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used.
A. Measurement uncertainty
B. Accuracy
C. Error
D. Precision

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The maximum holding time for acid preserved samples that will be subjected to determination of metals is _____
A. 48 hours
B. 3 months
C. 6 months
D. 1 week

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Glass container is NOT suitable for
A. oil and grease determination
B. microbiological analyses
C. all of the choices
D. inorganic trace analyses

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The main ISO Standard used by testing and calibration laboratories to gain accreditation and formal of their competence to carry out tests and/or calibrations, including sampling.
A. ISO/IEC 17025
B. EURACHEM
C. AOAC
D. ISO 9000:2000

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

According to Revised DA 04-36, the appropriate waste labels shall Include
A. Generator ID Number
B. Volume of Waste
C. Container Material
D. All of the above

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which of the following is NOT a proper laboratory practice?
A. wearing of masks and gloves
B. drying of glassware after washing
C. tying or braiding long hairs
D. adding water to strong acid

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which of the following is the most appropriate container for hexane?
A. glass bottle
B. amber bottle
C. plastic bottle
D. none

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Minimum concentration of a substance that can be measured and reported with confidence at the analyte concentration is greater than zero refers to
A. Lower Warning Limit
B. Method Detection Limit
C. Control Limit
D. Limit of Quantitation

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The fire triangle consists of which of the following?
A. oxygen, heat, material are
B. air, heat, fire
C. air, fuel, spark
D. oxygen, heat, fuel

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which is TRUE about laboratory hoods?
A. Provides further protection by diluting low of flammable gases below explosion limits.
B. It protects you from being exposed in chemical fume,
C. Must always be on
D. All of the above.

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following focuses on Quality Management Systems?
A. ISO 9001
B. ISO 17025
C. ISO 15189
D. GLP

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

There is a definite correlation between orderliness and level of safety in the laboratory. In addition, a disorderly laboratory can hinder or endanger emergency response personnel. Which of the following housekeeping rules should NOT be adhered to?
A. Never obstruct access to exits and emergency equipment.
B. Properly label and store all chemicals.
C. Store chemical containers on the floor
D. Clean work areas, including floors, regularly.

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Consider that you are working with vitamin C table production, to which standard’s should your quality management should subscribe?
A. GMP
B. HACCP
C. ISO 9001:2008
D. All of the above

A

D

17
Q

Sampling type that eliminates questions of bias in selection.
A. composite
B. Stratified
C. Systematic
D. Random

A

D

18
Q

This system is used in the food industry to identify and control potential hazards (i.e. biological, chemical, and physical) that could compromise food safety.
A. GLP
B. GMP
C. HACCP
D. ISO 9001

A

C

19
Q

First consideration for chemical storage shall be based on its ______
A. frequency of usage
B. compatibility with other chemicals
C. size of container
D. alphabetical order

A

B

20
Q

In labeling commercially packaged chemicals, the following are correct EXCEPT
A. The label usually includes the name of the chemical and any necessary handling and hazard information.
B. The label includes the CAS registry number to avoid ambiguity about cherical names
C. The label is supplemented by the date received.
D. Replace the existing labels on incoming containers of chemicals and other materials to avoid confusion.

A

D

21
Q

Waste is __________
A. a material that has no intended use or reuse
B. material that has a lapsed expiration date
C. any material that has been processed
D. a material that has no current use

A

A

22
Q

The total error of an analytical result is the sum of ______
A. sampling
B. sample preparation
C. analytical errors
D. all of the above

A

D

23
Q

Process by which a sample population is reduced in size to an amount of homogeneous material that can be conveniently handled in the lab in which the composition is representative of the population.
A. Selection
B. Monitoring
C. Sampling
D. Segregation

A

C

24
Q

The method of standardization can be used if a _____ reacts quantitatively with the reagent needed in the standard solution
A. primary standard
B. secondary standard
C. working standard
D. intermediate solution

A

A

25
Q

During acid spills, which of the following can be applied to the spill before treating it with adsorbent material?
A. Sodium bicarbonate
B. Water
C. Acetic acid
D. Sodium bisulfite

A

A

26
Q

These are any waste materials that can be retrieved from the waste stream and free from contamination that can still be converted into suitable beneficial use.
A. Recyclable wastes
B. Residual wastes
C. Compostable wastes
D. Special wastes

A

A

27
Q

Symbols indicated in waste labels that instantly identify the kind of hard the chemical possesses.
A. Signal words
B. Pictograms
C. Precautionary statements
D. Hazard statements

A

B

28
Q

It describes the policies and procedures the laboratory has to manage in relation to quality, or references where those procedures can be found. An essential requirement of ISO 9000 series of standards and ISO 17025.
A. Quality Assurance
B. Quality Control
C. Quality Manual
D. Documentation

A

B

29
Q

Which of the following statements best describes a primary-method?
I. Set of instructions about how to carry out a method issued by a national standards body. gtandard
II. It has the highest metrological qualities.
Ill. Method that employs the use of materials such as certified reference materials.
IV. Titration of hydrochloric acid with anhydrous sodium carbonate to determine the concentration of the acid is an example of this method.
A. I
B. II
C. II & IV
D. I & IV

A

A

Review (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions