[QUALITY CONTROL] PACOP VIOLET

C.) Koppeschaar's solution

The synonym of 0.1N Bromine solution.

A.) Koettsdorfer solution

B.) Kjeldahl solution

C.) Koppeschaar's solution

D.) All of these

E.) None of these

A.) Gains

An oxidizing agent _____ electrons.

A.) Gains

B.) Loses

C.) Donates

D.) Receives

E.) Shares

A) Neutralization

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.) Ferrous phenanthroline

Indicator used in ceric sulfate titrations

A.) Ferrous phenanthroline

B.) Ferric alum

C.) Eosin Y

D.) Potassium permanganate

E.) Phenolphthalein

E. Both A and C

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 B 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

A.) Less Soluble in water

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

C.) Titer value

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.) Alkalimetry

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

A.) Kjeldahl method

B.) Acidimetry

C.) Alkalimetry

D.) Compleximetry

E.) Precipitimetry

D.) Parallax

Inaccurate measurements resulting from not reading at proper eye level:

A.) Color blind

B.) Double vision

C.) Thermal aftereffect

D.) Parallax

E.) None of these

C.) Thermal after-effect

A permanent change in volume with volumetric apparatus caused by heat or hot solutions.

A.) Parallax

B.) Color Blind

C.) Thermal after-effect

D.) All of these

E.) None of these

A.) Direct Acidimetry

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

B.) End point

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.) Residual alkalimetry

What is the method of analysis involved in the essay of aspirin capsules?

A.) Residual acidimetry

B.) Residual alkalimetry

C.) Residual compleximetry

D.) Residual precipitimetry

E.) Residual permanganometry

E.) All of these

Which of the following is/are the way/s of facilitating the digestion of nitrogen to ammonium sulfate?

A.) Addition of potassium sulfate

B.) Use of selenium

C.) Addition of anhydrous sodium sulfate

D.) Use of copper sulfate

E.) All of these

C.) Phenolphthalein

The indicator used when titrating weak acid with a strong base:

A.) Ferric alum

B.) Methyl red

C.) Phenolphthalein

D.) Ferroin

E.) Dichlorofluorescein

C.) Less than 0.05 %

What is the allowable quantity of moisture in nonaqueous titration?

A.) Less than 5.0 %

B.) Less than 0.5 %

C.) Less than 0.05 %

D.) Less than 0.005 %

E.) Less than 0.0005 %

C.) Perchloric acid

What is the commonly employed titrant in nonaqueous acidimetry?

A.) Hydrochloric acid

B.) Bromic acid

C.) Perchloric acid

D.) Sulfuric acid

E.) Nitric acid

D.) Methyl red

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.) Complexation

It refers to the analysis of metal ions:

A.) Precipitation

B.) Neutralization

C.) Reduction

D.) Complexation

E.) Oxidation

C.) Ferric alum

Ferric ammonium sulfate, an indicator used in precipitimetry, is commonly known as _____

A.) DCF

B.) Eosin Y

C.) Ferric alum

D.) Ferroin

E.) TEE

D.) All of these

Which of the following indicator/s is/are used when titrating a strong with a strong alkali?

A.) Methyl red

B.) Phenolphthalein

C.) Methyl orange

D.) All of these

E.) None of these

C.) Vitamin C

A water-soluble vitamin used as a masking agent:

A.) Vitamin A

B.) Vitamin B

C.) Vitamin C

D.) Vitamin D

E.) Vitamin E

B.) Hydroxynaphthol blue

The following are examples of adsorption indicators in precipitimetry except:

A.) Tetrabromophenolphthalein ethyl ester

B.) Hydroxynaphthol blue

C.) Eosin Y.

D.) Dichloroflourescein

E.) None of these

B.) Oxidation-reduction

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.) Speed up the reaction

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

A.) Primary standard

A solid substance of known purity used in preparing standard solutions:

A.) Primary standard

B.) Analyte

C.) Secondary standard

D.) Titrand

E.) Titrant

D.) Starch

What is the indicator used in iodimetry and iodometry?

A.) Phenolphthalein

B.) Ferric alum

C.) Hydroxynapthol blue

D.) Starch

E.) Potassium permanganate

A.) Oxidizing agents

What is the analyte being assayed in iodometry?

A.) Oxidizing agents

B.) Acidic agents

C.) Metallic agents

D.) Basic agents

E.) Reducing agents

D.) All of these

Which of the following theory explains the actions of indicators?

A.) Physicochemical theory

B.) Organic theory

C.) Colloidal theory

D.) All of these

E.) None of these

B.) Masking

It refers to the analysis of a metal in the presence of another metal:

A.) Chelation

B.) Masking

C.) Complexation

D.) Cerimetry

E.) Digestion

E.) None of these

The following are ways of forming the equivalent precipitate in gravimetric analysis except:

A.) Precipitation

B.) Ignition

C.) Electrolysis

D.) All of these

E.) None of these

C.) Barium sulfate

What is the precipitate form of sulfate following gravimetric?

A.) Sodium sulfate

B.) Potassium sulfate

C.) Barium sulfate

D.) Magnesium sulfate

E.) Calcium sulfate

D.) Hydrogen sulfide

What is the precipitating form of sulfate following gravimetry?

A.) Sliver nitrate

B.) Magnesia mixture

C.) Barium chloride

D.) Hydrogen sulfide

E.) Sodium phosphate

E.) All of the above

Which of the following is the chemical reaction involved in titrimetric analysis?

A.) Neutralization

B.) Precipitation

C.) Complexation

D.) Oxidation-reduction

E.) All of the above

A.) Absolute alcohol

What is the most suitable solvent for the extraction of resins and resinous materials

A.) Absolute alcohol

B.) Ether

C.) Distilled water

D.) 80 % Ethanol

E.) N-hexane

A.) Acid number

It refers to the number of mg of KOH required to neutralize the free acids present in a sample:

A.) Acid number

B.) Iodine number

C.) Saponification number

D.) Ester number

E.) Koettsdorfer number

B.) KHC8H4O4

Which is the chemical formula of Potassium biphthalate?

A.) KCI

B.) KHC8H4O4

C.) K2CO3

D.) KHCO3

E.) KHO

E.) None of these

The components of titrimetric analysis are following except:

A.) Analyte

B.) Titrant

C.) Indicator

D.) Solvent

E.) None of these

B.) Cellulose

What is the composition of crude fiber?

A.) Saponins

B.) Cellulose

C.) Starch

D.) Phyosterol

E.) Proteins

C.) Saponification value

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.) Kjeldahl method

It refers to the method of analyzing the nitrogen content present in a sample:

A.) Masking

B.) Iodometry

C.) Kjeldahl method

D.) Gravimetry

E.) Acidimetry

E.) Acidimetry

It refers to the direct or residual analysis of bases using standard acid solutions:

A.) Alkalimetry

B.) Iodimetry

C.) Cerimetry

D.) Permanganometry

E.) Acidimetry

E.) Iodine value

This value serves as a quantitative measure of the proportion of unsaturated fatty acids present in a sample:

A.) Acid value

B.) Ester value

C.) Saponification value

D.) Hydroxyl value

E.) Iodine value

A.) Drying oils

Type of oils whose iodine number is more than 120: A.) Drying oils D.) All of these B.) Semidrying oils E.) None of these C.) Nondrying oils

C.) Acetylization method

It refers to the method of assaying alcohol content: A.) Bisulfite method D.) Hydroxylamine method B.) Kjeldahl method E.) Masking method C.) Acetylization method

D.) Nitrogen

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

C.) Residual titration

What is the method of titration involved in ultimate assay? A.) Direct titration D.) All of these B.) Indirect titration E.) None of these C.) Residual titration

A.) Accuracy

It refers to the nearness of a value to a target value: A.) Accuracy D.) Error B.) Defect E.) Any of these C.) Precision

A.) Acids

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

C.) Number of equivalents

Two substances reacting upon reaching the end-point must have same: A.) Volume D.) Weight B.) Normality E.) % Purity C.) Number of equivalents

E.) Both C and D

In titrimetric analysis, the substance being analyzed is the ___: A.) Indicator D.) Titrand B.) Normality E.) Both C and D C.) Analyte

E.) Titer

The following are expressions of concentration in volumetric solutions except: A.) Molarity D.) Formality B.) Normality E.) Titer C.) Molality

D.) Indicator

An organic compound that changes from one color to another at a certain pH is called: A.) Titrand D.) Indicator B.) Active constituent E.) Titrant C.) Analyte

B.) Primary standard

A substance that has a high degree of purity and is used in direct standardization purposes: A.) Analyte D.) Secondary standard B.) Primary standard E.) CP grade C.) Technical grade

A.) Titration

The experimental way of determining when equivalent amounts of reactants have reacted together is: A.) Titration D.) All of these B.) Masking E.) None of these C.) Standardization

B.) Normality

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

E.) Secondary standard

A solution of known concentration used to standardize another solution is A.) Dilute solution D.) Concentrated solution B.) Standard solution E.) Secondary standard C.) Primary standard

A.) To avoid competition of the titrant with weak nitrogen base

What is the significance of controlling the temperature in nonaqueous titrations: A.) To avoid competition of the titrant with weak nitrogen base B.) To prevent the volatilization of the titrant C.) To meet the requirements of the USP in conducting non-aqueous titrations. D.) All of these E.) None of these

A.) Acids

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

A.) Sodium methoxide

Which titrant in nonaqueous alkalimetry produces a gelatinous reaction product? A.) Sodium methoxide D.) Sodium aminometheoxide B.) Lithium methoxide E.) Sodium triphenylmethane C.) Potassium methoxide

B.) Standardization

The process by which the exact concentration of a solution is determined is. A.) Titration D.) Direct titration B.) Standardization E.) Residual titration C.) Masking

B.) Instrumentals errors

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

C.) Acid-insoluble ash

Silica from the soil that is left after treatment with diluted acid is the: A.) Total ash D.) Loss on drying B.) Moisture E.) Extractive C.) Acid-insoluble ash

E.) B and D

A type of titration where the first is added in excess with the sample and the second titrant reacts with the added excess A.) Direct titration D.) Back titration B.) Residual titration E.) B and D C.) Indirect titration

C.) Aluminum

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

E.) Non-aqueous acidimetry

The measurement of a weak base in a non-aqueous medium of a given sample with standard perchloric acid: A.) Non-aqueous alkalimetry D.) Alkalimetry B.) Acidimetry E.) Non-aqueous acidimetry C.) Compleximetry

B.) Ammonium thiocyanate solution

Ferric alum TS is used as indicator in volumetric precipitation analysis if the titrant used is: A.) Sodium Hydroxide solution D.) Hydrochloric acid solution B.) Ammonium thiocyanate solution E.) Zinc sulfate solution C.) EDTA solution

A.) Triethanolamine

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

C.) Permanganometry

Assay of sodium is an example of assay under: A.) Cerimetry D.) Iodimetry B.) Iodometry E.) Brominimetry C.) Permanganometry

B.) Babcock bottle

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

D.) Colorless

What is the color of phenolphthalein in vinegar? A.) Purple D.) Colorless B.) Blue E.) Pink C.) Yellow

B.) Sodium oxalate

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

A.) Analyte

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

C.) Nitric acid and hydrochloric acid

The following are the cleansing agents for volumetric analysis except: A.) Sodium dichromate in sulfuric acid B.) Synthetic detergent solution C.) Nitric acid and hydrochloric acid D.) Solution of trisodium phosphate E.) None of these

B.) Diazotization method

The method of assay for sulfonamides is: A.) Kjeldahl method D.) Trimetric analysis B.) Diazotization method E.) Volumetric analysis C.) Gravimetric method

B.) Azeotropic method

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

D.) Precipitimetry

Adsorption indicators are used in which method of analysis A.) Acidimetry D.) Precipitimetry B.) Alkalimetry E.) Oxidation-reduction C.) Compleximetry

E.) Potassium permanganate

The indicator used in permanganate titrations: A.) Phenolphthalein D.) Starch TS B.) Hydroxynaphthol blue E.) Potassium permanganate C.) Eosin Y

A.) Pycnometer

Specific gravity refers to the ratio of the volume of oil to that of an equal volume of pure water when both are determined at 25C. The official method for determining specific gravity is: A.) Pycnometer D.) Both A and B B.) Westphal balance E.) All of these C.) Hydrometer

C.) Ligand

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

D.) Iodometry

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

B.) Indirect permanganometry

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

B.) Nitrogen content

The Kjeldahl method of analysis used to determine which analyte? A.) Moisture content D.) Cellulose B.) Nitrogen content E.) Fat content C.) Sulfonamides

B.) Unsaturated fatty acids

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

C.) Saponification value

The number of mg of KOH needed to neutralize the free acids and saponify the esters in 1 g fat or oil A.) Acid Value D.) Hydroxyl value B.) Ester value E.) Iodine value C.) Saponification value

C.) Gravimetry

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

D.) Acetyl value

It refers to the number of milligrams of potassium hydroxide required to neutralize the acetic acid obtained by the saponification of 1 gram of acetylated fatty acid. A.) Acid value D.) Acetyl value B.) Saponification value E.) Ester value C.) Hydroxyl value

B.) Ultimate assay

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

C.) Hexadentate

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

A.) Bromine

It is present in Koppeschaar's solution: A.) Bromine D.) Flourine B.) Chlorine E.) None of these C.) Iodine

C.) Gunning method

A means of facilitating the digestion of nitrogen to ammonium sulfate by interaction with anhydrous sodium sulfate or potassium sulfate: A.) Use of catalysts D.) All of these B.) Digestion with sulfuric acid E.) None of these C.) Gunning method

B.) 550-700 oC

The temperature for ignition described as dull red heat is A.) 500-550 oC D.) 1000-1200 oC B.) 550-700 oC E.) 1200-1600 oC C.) 800-1000 oC

E.) Alcohols

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

D.) +7

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

B.) Mayer's reagent

The alkaloidal test solution "mercuric potassium iodine TS" is also known as: A.) Valser's reagent C.) Dragendorff's reagent B.) Mayer's reagent D.) None of these E.) Wagner's reagent

D.) 80.8

Determine the iodine value of a sample of olive oil weighing 0.2100 g if 24.15 mL and 12.00 mL of 0.1100 N sodium thiosulfate solution which are required for the blank and residual titrations, respectively. A.) 80.5 D.) 80.8 B.) 80.6 E.) 80.9 C.) 80.7

E.) I, II and III

Which of the following physical properties is possessed by alkaloids? I. Alkaloids combine directly with acids to form salts that are usually soluble in water II. Alkaloids are liberated from aqueous solutions of their salts by alkalies III. Alkaloids form highly insoluble precipitates with a considerable number of reagents especially with the salts of some heavy metals A.) I only D.) II and III B.) I and II E.) I, II and III C.) I and III

C.) Menstruum used in the extraction of the alkaloid

Which of the following factors does NOT affect the yield of alkaloids in plants? A.) Age of the plant when it was collected B.) Season of the year when the drug was harvested C.) Menstruum used in the extraction of the alkaloid D.) Soil and climate in which the drug was grown E.) Conditions when the drug was collected, dried and stored

D.) Iodine flask

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