REVIEWER 02 - Quality Control (Purple)

Question 1

An oxidizing agent __________ electrons
A.) Gains
B.) Loses
C.) Donates
D.) Receives
E.) Shares

Answer 1

A. Gains

Question 2

It pertains to a reaction with acid and a base resulting to the formation of salt and water.
A.) Neutralization
B.) Complexation
C.) Precipitation
D.) Oxidation
E.) Reduction

Answer 2

A. Neutralization

Question 3

Indicator used in ceric sulfate titrations
A.) Ferrous phenanthroline
B.) Ferric alum
C.) Eosin Y
D.) Potassium permanganate
E.) Phenolphthalein

Answer 3

A. Ferrous phenanthroline

Question 4

The theoretical point at which the added titrant is chemically equivalent to the analyte in the sample
A.) Stoichiometric point
B.) End point
C.) Equivalence point
D.) Both A and B
E. Both A and C

Answer 4

E. Both A and C

Question 5

A method of analysis which involves the determination of a solution of known
concentration required to react with a given amount of substance to be analyzed:
A.) Gravimetric analysis
B.) Titrimetric analysis
C.) Volumetric analysis
D.) Both A and B
E.) Both B and C

Answer 5

E. Both B and C

Question 6

The following are the reasons of using the disodium form of EDTA in preparing
standard solutions of EDTA except:
A.)Less Soluble in water
B.) Non hygroscopic
C.) Very stable
D.) All of these
E.)None of these

Answer 6

A. Less soluble in water

Question 7

The weight of a substance that is chemically equivalent to one milliliter of a standard solution.
A.) Gram-equivalent weight
B.) Milliequivalent weight
C.)Titer value
D.) Gram-milliequivalent weight
E.) Millimole

Answer 7

C. Titer value

Question 8

It refers to the direct or residual analysisof acids using standard basics solutions:

A.)Kjeldahl method
B.) Acidimetry
C.) Alkalimetry
D.) Compleximetry
E.) Precipitimetry

Answer 8

C. Alkalimetry

Question 9

What is the method of analysis involved in the essay of sodium hydroxide?
A.) Direct Acidimetry
B.) Direct alkalimetry
C.)Direct precipitimetry
D.) Direct compleximetry
E.) Direct permanganometry

Answer 9

A. Direct acidimetry

Question 10

It is the point at which titration process is stopped.
A.) Equivalence point
B.) End point
C.) Stoichiometric point
D.) Both A and C
E.) Both B and C

Answer 10

B. End point

Question 11

What is the method of analysis involved in the assay of aspirin capsules?
A.) Residual acidimetry
B.) Residual alkalimetry C.)Residual permanganometry
D.) Residual precipitimetry

Answer 11

B. Residual alkalimetry

Question 12

The indicator used when titrating weak acid with a strong base:
A.) Ferric alum
B.) Methyl red
C.) Phenolphthalein
D.) Ferroin
E.) Dichloroflouroscein

Answer 12

C. Phenolphthalein

Question 13

The indicator used when titrating weak base with a strong acid:
A.) Methyl orange
B.) Methyl yellow
C.) Methylene blue
D.) Methyl red
E.) Methylene red

Answer 13

D. Methyl red

Question 14

It refers to the analysis of metal ions:
A.) Precipitation
B.) Neutralization
C.) Reduction
D.) Complexation
E.) Oxidation

Answer 14

D. Complexation

Question 15

Ferric ammonium sulfate , an indicator used in precipitimetry, is commonly known as _____
A.) DCF
B.) Eosin Y
C.) Ferric alum
D.) Ferroin
E.) TEE

Answer 15

C. Ferric alum

Question 16

Which of the following indicator/s is/are used when titrating a strong with a strong alkali?
A.) Methyl red
B.) Phenolphtalein
C.) Methyl orange
D.) All of these
E.) None of these

Answer 16

D. All of these

Question 17

What type of analysis involves a change in the valence of the reacting
substances?
A.) Complexation
B.) Oxidation-reduction
C.) Neutralization
D.) Precipitation
E.) Recombination

Answer 17

B. Oxidation-reduction

Question 18

What is the purpose of using mixed indicators in some titrations?
A.) Sharpen up the color change
B.) Speed up the reaction
C.) Enhance the solubility of the analyte
D.) All of these
E.) None of these

Answer 18

B.) Speed up the reaction

Question 19

A solid substance of known purity used in preparing standard solutions:
A.) Primary standard
B.) Analyte
C.) Secondary standard
D.) Titrand
E.) Titrant

Answer 19

A. Primary standard

Question 20

What is the indicator used in iodimetry and iodometry?
A.) Phenolphthalein
B.) Ferric alum
C.) Hydroxynapthol blue
D.) Starch
E.) Potassium permanganate

Answer 20

D. Starch

Question 21

It refers to the analysis of a metal in the presence of another metal:
A.) Chelation
B.) Masking
C.) Complexation
D.) Cerimetry
E.) Digestion

Answer 21

B. Masking

Question 22

What is the composition of crude fiber?
A.) Saponins
B.) Cellulose
C.) Starch
D.) Phyosterol
E.) Proteins

Answer 22

B. Cellulose

Question 23

What is the term of referring to Koettsdorfer number?
A.) Acid value
B.) Iodine value
C.) Saponification value
D.) Hydroxyl value
E.) Ester value

Answer 23

C. Saponification value

Question 24

What is the main element present in alkaloids?
A.) Carbon
B.) Hydrogen
C.) Oxygen
D.) Nitrogen
E.) Sulfur

Answer 24

D. Nitrogen

Question 25

A buret with a glass stopcock can be used for:
A.) Acids
B.) Bases
C.) Alcohols
D.) Salts
E.) Oxidizing agents

Answer 25

A. Acids

Question 26

Class of systematic error that are invariably caused by faulty and
uncalibrated instruments:
A.) Personal errors
B.) Instrumentals errors
C.) Regeant errors
D.) Constant errors
E.) Proportional errors

Answer 26

B. Instrumental errors

Question 27

Residual titration method under EDTA titrations is applied to which
metal ion
A.) Potassium
B.) Magnesium
C.) Aluminum
D.) Calcium
E.) Sodium

Answer 27

C. Aluminum

Question 28

The masking agent used in the assay of Magnesium with EDTA in the
presence of Aluminum.
A.) Triethanolamine
B.) Thioglycol
C.) Potassium Cyanide
D.) Citrates
E.) Ascorbic acid

Answer 28

A. Triethanolamine

Question 29

The apparatus used in assay of volatile oils in spirits:
A.) Cassia flask
B.) Babcock bottle
C.) Iodine flask
D.) Distillation flask
E.) Erlenmeyer flask

Answer 29

B. Babcock bottle

Question 30

It refers to a molecule that provides a group for attachment to metals
A.) Chelate
B.) Complex
C.) Ligand
D.) All of these
E.) None of these

Answer 30

C. Ligand

Question 31

The iodine value of oils is a quantitative measure of
A.) Cellulose
B.) Unsaturated fatty acids
C.) Free fatty acids
D.) Nitrogen content
E.) Water content

Answer 31

B. Unsaturated fatty acids

Question 32

A type of analysis that identifies the amount of a single chemical specie
in a given sample:
A.) Classical method of analysis
B.) Ultimate assay
C.) Instrumental assay
D.) Volumetric analysis
E.) Proximate assay

Answer 32

B. Ultimate assay

Question 33

The valence number of Mn in KMnO4
is:
A.) +1
B.) +3
C.) +5
D.) +7
E.) +9

Answer 33

D. +7

Question 34

The glassware that is required in the determination of iodine value of
volatile oils
A.) Cassia flask
B.) Erlenmeyer flask
C.) Babcock bottle
D.) Iodine flask
E.) Distillation flask

Answer 34

D. Iodine flask

Question 35

Type of errors that can be determined and corrected
A.) Defective
B.) Determinate error
C.) Indeterminate error
D.) Both A and B
E.) Both A and C

Answer 35

B. Determinate error

Question 36

Which of the following is NOT an advantage of permanganate
titrations?
A.) Easily standardized
B.) Retains its concentration over
long periods of time
C.) It is stable even on boiling
D.) It reacts rapidly
E.) Does not need an indicator

Answer 36

C. It is stable even on boiling

Question 37

What is the component of starch that reacts with iodine to form the
intensely blue-colored solution?
A.) Alpha-Amylose
B.) Beta-Amylose
C.) Amylopectin
D.) Both A and B
E.) Both B and C

Answer 37

B. Beta-amylose

Question 38

The components of blank titration are the following except:
A.) Analyte
B.) Titrant
C.) Solvent
D.) Indicator
E.) None of these

Answer 38

A. Analyte

Question 39

The primary standard used in the standardization of potassium
permanganate:
A.) Potassium permanganate
B.) Sodium oxalate
C.) Potassium biphthalate
D.) Sodium hydroxide
E.) Potassium dichromate

Answer 39

B. Sodium oxalate

Question 40

A water content determination method that uses a xylene tube is:
A.) Karl fischer titration
B.) Azeotropic method
C.) Dew point method
D.) Gravimetric method
E.) Electrolytic hygrometric method

Answer 40

B. Azeotropic method

Question 41

Based on Arrhenius concept of non-aqueous neutralization
______ are weakly protophylic substances.
A.) Acids
B.) Oxidizing agents
C.) Metals
D.) Reducing agents
E.) Bases

Answer 41

A. Acids

Question 42

A concentration expression referring to the number of
milliequivalents of sclute per milliliter of solution
A.) Molality
B.) Normality
C.) Formality
D.) Molality
E.) % purity

Answer 42

B. Normality

Question 43

Which of the following is the chemical reaction involved in titrmetric
analysis?
A.) Neutralization
B.) Precipitation
C.) Complexation
D.) Oxidation-reduction
E.) All of the above

Answer 43

E. All of the above

Question 44

The following are ways of forming the equivalent precipitate in
gravimetric analysis except:
A.) Precipitation
B.) Ignition
C.) All of these
D.) None of these

Answer 44

D. None of these

Question 45

What is the commonly employed titrant in nonaqueous acidimetry?
A.) Hydrochloric acid
B.) Bromic acid
C.) Perchloric acid
D.) Sulfuric acid
E.) Nitric acid

Answer 45

C. Perchloric acid

Question 46

Acetylization method of analysis in volatile oils is used to determine
A.) Aldehydes
B.) Phenols
C.) Acids
D.) Ketones
E.) Alcohols

Answer 46

E. Alcohols

Question 47

EDTA is considered as a/an _____ ligand
A.) Unidentate
B.) Tridentate
C.) Hexadentate
D.) Octadentate
E.) Pentadentate

Answer 47

C. Hexadentate

Question 48

Analysis where the constituents of a sample are separated and then
the product are weighed:
A.) Gasometry
B.) Titrimetry
C.) Gravimetry
D.) Volumetric analysis
E.) Diazotization method

Answer 48

C. Gravimetry

Question 49

Malic Acid present in cherry juice may be determined by:
A.) Direct permanganometry
B.) Indirect permanganometry
C.) Residual permanganometry
D.) Iodimetry
E.) Iodometry

Answer 49

B.) Indirect permanganometry

Question 50

A process wherein the sample is made to liberate iodine, which is then
titrated with a standard solution of sodium thiosulfate:
A.) Cerimetry
B.) Iodimetry
C.) Diazotization method
D.) All of these
E.) Iodometry

Answer 50

D.) All of these