VIOLET - QA/QC

1. 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

C.) Koppeschaar's solution

2. An oxidizing agent ______electrons.

A.) Gains

B.) Loses

C.) Donates

D.) Receives

E.) Shares

A.) Gains

3. 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

4. Indicator used in ceric sulfate titrations

A.) Ferrous phenanthroline

B.) Ferric alum

C.) Eosin Y

D.) Potassium permanganate

E.) Phenolphthalein

A.) Ferrous phenanthroline

5. 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

6. 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

7. 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

8. 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

9. 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

C.) Alkalimetry

10. 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

D.) Parallax

11. 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

C.) Thermal after-effect

12. 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

13. It is the point at which titration process is stopped.

A.) Equivalence point

B.) End point

C.) Stoichiometric point

D.) Residual precipitimetry

E.) Residual permanganometry

B.) End point

14. 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

B.) Residual alkalimetry

15. 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

E.) All of these

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

A.) Ferric alum

B.) Methyl red

C.) Phenolphthalein

D.) Ferroin

E.) Dichlorofluorescein

C.) Phenolphthalein

17. 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.) Less than 0.05 %

18. 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

19. 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

20. It refers to the analysis of metal ions:

A.) Precipitation

B.) Neutralization

C.) Reduction

D.) Complexation

E.) Oxidation

D.) Complexation

21. 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

22. 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

D.) All of these

23. A water-soluble vitamin used as a masking agent:

A.) Vitamin A

B.) Vitamin B

C.) Vitamin C

D.) Vitamin D

E.) Vitamin E

C.) Vitamin C

24. 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.) Hydroxynaphthol blue

25.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

26. 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.) Sharpen up the color change

27. 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

28. What is the indicator used in iodimetry and iodometry?

A.) Phenolphthalein

B.) Ferric alum

C.) Hydroxynapthol blue

D.) Starch

E.) Potassium permanganate

D.) Starch

29. What is the analyte being assayed in iodometry?

A.) Oxidizing agents

B.) Acidic agents

C.) Metallic agents

D.) Basic agents

E.) Reducing agents

A.) Oxidizing agents

30. 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

D.) All of these

31. 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

32. 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

E.) None of these

33.What is the precipitate form of sulfate following gravimetric?

A.) Sodium sulfate

B.) Potassium sulfate

C.) Barium sulfate

D.) Magnesium sulfate

E.) Calcium sulfate

C.) Barium sulfate

34. What is the precipitating form of sulfate following gravimetry?

A.) Sliver nitrate

B.) Magnesia mixture

C.) Barium chloride

D.) Hydrogen sulfide

E.) Sodium phosphate

D.) Hydrogen sulfide

35. 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

E.) All of the above

36. 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.) Absolute alcohol

37. 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

A.) Acid number

38. Which is the chemical formula of Potassium biphthalate?

A.) KCI

B.) KHC8H4O4

C.) K2CO3

D.) KHCO3

E.) KHO

B.) KHC8H4O4

39. The components of titrimetric analysis are following except:

A.) Analyte

B.) Titrant

C.) Indicator

D.) Solvent

E.) None of these

E.) None of these

40. What is the composition of crude fiber?

A.) Saponins

B.) Cellulose

C.) Starch

D.) Phyosterol

B.) Cellulose

41. 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

42. 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

C.) Kjeldahl method

43. 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.) Acidimetry

44.) 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

E.) Iodine value

45. Type of oils whose iodine number is more than 120:

A.) Drying oils

B.) Semidrying oils

C.) Nondrying oils

D.) All of these

E.) None of these

A.) Drying oils

46. It refers to the method of assaying alcohol content:

A.) Bisulfite method

B.) Kjeldahl method

C.) Acetylization method

D.) Hydroxylamine method

E.) Masking method

C.) Acetylization method

47. What is the main element present in alkaloids?

A.) Carbon

B.) Hydrogen

C.) Oxygen

D.) Nitrogen

E.) Sulfur

D.) Nitrogen

48. What is the method of titration involved in ultimate assay?

A.) Direct titration

B.) Indirect titration

C.) Residual titration

D.) All of these

E.) None of these

C.) Residual titration

49. It refers to the nearness of a value to a target value:

A.) Accuracy

B.) Defect

C.) Precision

D.) Error

E.) Any of these

A.) Accuracy

50.) A buret with a glass stopcock can be used for:

A.) Acids

B.) Bases

C.) Alcohols

D.) Salts

E.) Oxidizing agents

A.) Acids

51. Two substances reacting upon reaching the end-point must have same:

A.) Volume

B.) Normality

C.) Number of equivalents

D.) Weight

E.) % Purity

C.) Number of equivalents

52. In titrimetric analysis, the substance being analyzed is the ___:

A.) Indicator

B.) Normality

C.) Analyte

D.) Titrand

E.) Both C and D

E.) Both C and D

53. The following are expressions of concentration in volumetric solutions except:

A.) Molarity

B.) Normality

C.) Molality

D.) Formality

E.) Titer

E.) Titer

54. An organic compound that changes from one color to another at a certain pH is called:

A.) Titrand

B.) Active constituent

C.) Analyte

D.) Indicator

E.) Titrant

D.) Indicator

55. A substance that has a high degree of purity and is used in direct standardization purposes:

A.) Analyte

B.) Primary standard

C.) Technical grade

D.) Secondary standard

E.) CP grade

B.) Primary standard

56. The experimental way of determining when equivalent amounts of reactants have reacted

together is:

A.) Titration

B.) Masking

C.) Standardization

D.) All of these

E.) None of these

A.) Titration

57. A concentration expression referring to the number of milliequivalents of solute per milliliter

of solution:

A.) Molality

B.) Normality

C.) Formality

D.) Molality

E.) % purity

B.) Normality

58.A solution of known concentration used to standardize another solution is

A.) Dilute solution

B.) Standard solution

C.) Primary standard

D.) Concentrated solution

E.) Secondary standard

E.) Secondary standard

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

60. 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

61. Which titrant in nonaqueous alkalimetry produces a gelatinous reaction product?

A.) Sodium methoxide

B.) Lithium methoxide

C.) Potassium methoxide

D.) Sodium aminometheoxide

E.) Sodium triphenylmethane

A.) Sodium methoxide

62. The process by which the exact concentration of a solution is determined is.

A.) Titration

B.) Standardization

C.) Masking

D.) Direct titration

E.) Residual titration

B.) Standardization

63. Class of systematic error that are invariably caused by faulty and uncalibrated instruments:

A.) Personal errors

B.) Instrumentals errors

C.) Reagent errors

D.) Constant errors

E.) Proportional errors

B.) Instrumentals errors

64. Silica from the soil that is left after treatment with diluted acid is the:

A.) Total ash

B.) Moisture

C.) Acid-insoluble ash

D.) Loss on drying

E.) Extractive

C.) Acid-insoluble ash

65. 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

B.) Residual titration

C.) Indirect titration

D.) Back titration

E.) B and D

E.) B and D

66. Residual titration method under EDTA titrations is applied to which metal ion:

A.) Potassium

B.) Magnesium

C.) Aluminum

D.) Calcium

E.) Sodium

C.) Aluminum

67. The measurement of a weak base in a non-aqueous medium of a given sample with standard perchloric acid:

A.) Non-aqueous alkalimetry

B.) Acidimetry

C.) Compleximetry

D.) Alkalimetry

E.) Non-aqueous acidimetry

E.) Non-aqueous acidimetry

68. Ferric alum TS is used as indicator in volumetric precipitation analysis if the titrant used is:

A.) Sodium Hydroxide solution

B.) Ammonium thiocyanate solution

C.) EDTA solution

D.) Hydrochloric acid solution

E.) Zinc sulfate solution

B.) Ammonium thiocyanate solution

69. 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

70. Assay of sodium is an example of assay under:

A.) Cerimetry

B.) Iodometry

C.) Permanganometry

D.) Iodimetry

E.) Brominimetry

C.) Permanganometry

71. 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

72. What is the color of phenolphthalein in vinegar?

A.) Purple

B.) Blue

C.) Yellow

D.) Colorless

E.) Pink

D.) Colorless

73. 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

74. The components of blank titration are the following except:

A.) Analyte

B.) Titrant

C.) Solvent

D.) Indicator

E.) None of these

A.) Analyte

75.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

C.) Nitric acid and hydrochloric acid

76. The method of assay for sulfonamides is:

A.) Kjeldahl method

B.) Diazotization method

C.) Gravimetric method

D.) Trimetric analysis

E.) Volumetric analysis

B.) Diazotization method

77. 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

78. Adsorption indicators are used in which method of analysis

A.) Acidimetry

B.) Alkalimetry

C.) Compleximetry

D.) Precipitimetry

E.) Oxidation-reduction

D.) Precipitimetry

79. The indicator used in permanganate titrations:

A.) Phenolphthalein

B.) Hydroxynaphthol blue

C.) Eosin Y

D.) Starch TS

E.) Potassium permanganate

E.) Potassium permanganate

80. 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

B.) Westphal balance

C.) Hydrometer

D.) Both A and B

E.) All of these

A.) Pycnometer

81. 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

82. 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.) Iodometry

E.) Permanganometry

D.) Iodometry

83. 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

84. The Kjeldahl method of analysis used to determine which analyte?

A.) Moisture content

B.) Nitrogen content

C.) Sulfonamides

D.) Cellulose

E.) Fat content

B.) Nitrogen content

85. 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

86. 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

B.) Ester value

C.) Saponification value

D.) Hydroxyl value

E.) Iodine value

C.) Saponification value

87. 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

88. 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

B.) Saponification value

C.) Hydroxyl value

D.) Acetyl value

E.) Ester value

D.) Acetyl value

89. 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

90. EDTA is considered as a/an _____ ligand

A.) Unidentate

B.) Tridentate

C.) Hexadentate

D.) Octadentate

E.) Pentadentate

C.) Hexadentate

91. It is present in Koppeschaar's solution:

A.) Bromine

B.) Chlorine

C.) Iodine

D.) Flourine

E.) None of these

A.) Bromine

92. A means of facilitating the digestion of nitrogen to ammonium sulfate by interaction with anhydrous sodium sulfate or potassium sulfate:

A.) Use of catalysts

B.) Digestion with sulfuric acid

C.) Gunning method

D.) All of these

E.) None of these

C.) Gunning method

93. The temperature for ignition described as dull red heat is

A.) 500-550oC

B.) 550-700oC

C.) 800-1000oC

D.) 1000-1200oC

E.) 1200-1600oC

B.) 550-700oC

94.Acetylization method of analysis in volatile oils is used to determine

A.) Aldehydes

B.) Phenols

C.) Acids

D.) Ketones

E.) Alcohols

E.) Alcohols

95. The valence number of Mn in KMnO4 is:

A.) +1

B.) +3

C.) +5

D.) +7

E.) +9

D.) +7

96. The alkaloidal test solution "mercuric potassium iodine TS" is also known as:

A.) Valser's reagent

B.) Mayer's reagent

C.) Wagner's reagent

D.) Dragendorff's reagent

E.) None of these

B.) Mayer's reagent

97. 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

B.) 80.6

C.) 80.7

D.) 80.8

E.) 80.9

D.) 80.8

98. 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

B.) I and II

C.) I and III

D.) II and III

E.) I, II and III

E.) I, II and III

99. 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

C.) Menstruum used in the extraction of the alkaloid

100. 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