REVIEWER 02 - Quality Control (Purple) Flashcards
An oxidizing agent __________ electrons
A.) Gains
B.) Loses
C.) Donates
D.) Receives
E.) Shares
A. Gains
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
A. Neutralization
Indicator used in ceric sulfate titrations
A.) Ferrous phenanthroline
B.) Ferric alum
C.) Eosin Y
D.) Potassium permanganate
E.) Phenolphthalein
A. Ferrous phenanthroline
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
E. Both A and C
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
E. Both B and C
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
A. Less soluble in water
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
C. Titer value
It refers to the direct or residual analysisof acids using standard basics solutions:
A.)Kjeldahl method
B.) Acidimetry
C.) Alkalimetry
D.) Compleximetry
E.) Precipitimetry
C. Alkalimetry
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
A. Direct acidimetry
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
B. End point
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
B. Residual alkalimetry
The indicator used when titrating weak acid with a strong base:
A.) Ferric alum
B.) Methyl red
C.) Phenolphthalein
D.) Ferroin
E.) Dichloroflouroscein
C. Phenolphthalein
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
D. Methyl red
It refers to the analysis of metal ions:
A.) Precipitation
B.) Neutralization
C.) Reduction
D.) Complexation
E.) Oxidation
D. Complexation
Ferric ammonium sulfate , an indicator used in precipitimetry, is commonly known as _____
A.) DCF
B.) Eosin Y
C.) Ferric alum
D.) Ferroin
E.) TEE
C. Ferric alum
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
D. All of these
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
B. Oxidation-reduction
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
B.) Speed up the reaction
A solid substance of known purity used in preparing standard solutions:
A.) Primary standard
B.) Analyte
C.) Secondary standard
D.) Titrand
E.) Titrant
A. Primary standard
What is the indicator used in iodimetry and iodometry?
A.) Phenolphthalein
B.) Ferric alum
C.) Hydroxynapthol blue
D.) Starch
E.) Potassium permanganate
D. Starch
It refers to the analysis of a metal in the presence of another metal:
A.) Chelation
B.) Masking
C.) Complexation
D.) Cerimetry
E.) Digestion
B. Masking
What is the composition of crude fiber?
A.) Saponins
B.) Cellulose
C.) Starch
D.) Phyosterol
E.) Proteins
B. Cellulose
What is the term of referring to Koettsdorfer number?
A.) Acid value
B.) Iodine value
C.) Saponification value
D.) Hydroxyl value
E.) Ester value
C. Saponification value
What is the main element present in alkaloids?
A.) Carbon
B.) Hydrogen
C.) Oxygen
D.) Nitrogen
E.) Sulfur
D. Nitrogen
A buret with a glass stopcock can be used for:
A.) Acids
B.) Bases
C.) Alcohols
D.) Salts
E.) Oxidizing agents
A. Acids
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
B. Instrumental errors
Residual titration method under EDTA titrations is applied to which
metal ion
A.) Potassium
B.) Magnesium
C.) Aluminum
D.) Calcium
E.) Sodium
C. Aluminum
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
A. Triethanolamine
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
B. Babcock bottle
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
C. Ligand
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
B. Unsaturated fatty acids
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
B. Ultimate assay
The valence number of Mn in KMnO4
is:
A.) +1
B.) +3
C.) +5
D.) +7
E.) +9
D. +7
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
D. Iodine flask
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
B. Determinate error
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
C. It is stable even on boiling
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
B. Beta-amylose
The components of blank titration are the following except:
A.) Analyte
B.) Titrant
C.) Solvent
D.) Indicator
E.) None of these
A. Analyte
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
B. Sodium oxalate
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
B. Azeotropic method
Based on Arrhenius concept of non-aqueous neutralization
______ are weakly protophylic substances.
A.) Acids
B.) Oxidizing agents
C.) Metals
D.) Reducing agents
E.) Bases
A. Acids
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
B. Normality
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
E. All of the above
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
D. None of these
What is the commonly employed titrant in nonaqueous acidimetry?
A.) Hydrochloric acid
B.) Bromic acid
C.) Perchloric acid
D.) Sulfuric acid
E.) Nitric acid
C. Perchloric acid
Acetylization method of analysis in volatile oils is used to determine
A.) Aldehydes
B.) Phenols
C.) Acids
D.) Ketones
E.) Alcohols
E. Alcohols
EDTA is considered as a/an _____ ligand
A.) Unidentate
B.) Tridentate
C.) Hexadentate
D.) Octadentate
E.) Pentadentate
C. Hexadentate
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
C. Gravimetry
Malic Acid present in cherry juice may be determined by:
A.) Direct permanganometry
B.) Indirect permanganometry
C.) Residual permanganometry
D.) Iodimetry
E.) Iodometry
B.) Indirect permanganometry
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
D.) All of these
