Quality Control Exam |250 Questions with
100% Verified Answers
69. A term in compleximetry used to indicate a determination of a metal in the
presence of another metal is:
A) Redox
B) Masking
C) Linking
D) Complexing - ✔️✔️B
70. Two substances reacting upon reaching the end point must have the same:
A) Normality
B) Volume
C) No. of equivalents
D) Weight - ✔️✔️C
71. All of the following are optical devices or instruments, except:
A) pH meter
B) Spectrophotometer
C) Colorimeter
D) Flame photometer - ✔️✔️A
,72. The method of assay for sulfonamides is:
A) Acid-base titration
B) Gravimetric
C) Diazotization with nitrite
D) Redox titration - ✔️✔️C
73. Which of the following is a reducing agent?
A) Ascorbic acid
B) KMNO4
C) Iodine
D) Hydrochloric acid - ✔️✔️A
74. In using spectrophotometer to measure the concentration of a sample, the
following data were obtained: absorbance of the standard solution = 0.39;
absorbance of the sample solution = 0.42; concentration of the standard =15mcg.
The concentration of the sample is:
A) 16.15mcg
B) 17.5mcg
C) 15.75mcg
D) 16.0mcg - ✔️✔️C
76. Radiant energy required in the analysis of drugs under Fluorometry is in:
,A) UV region
B) Visible region
C) IR region
D) A and B - ✔️✔️A
77. The method of assay for Vitamin B12 and calcium pantothenate is by:
A) Iodimetry
B) Microbial-turbidimetric method
C) Fluorometry
D) Redox titration - ✔️✔️B
78. The pH of a solution is usually measured by using:
A) Platinum electrode
B) Glass electrode
C) Mercury electrode
D) Calomel electrode - ✔️✔️B
79. Nuclear Magnetic Resonance (NMR) is used for:
A) Radioisotopes
B) Irradiation
, C) Identification of chemicals
D) A and B - ✔️✔️D
80. In the assay of acetic acid (MW = 60.05), each mL of 1N NaOH is equivalent to:
A) 0.60000g of acetic acid
B) 0.00605g of acetic acid
C) 0.60050g of acetic acid
D) 0.06005g of acetic acid - ✔️✔️D
81. Chemical analysis, which determines the amount or percentage content of a
certain component in a sample:
A) Qualitative
B) Proximate
C) Quantitative
D) Gravimetric - ✔️✔️C
82. One of the fundamental laws in spectrophotometry is:
A) Law of Mass Action
B) Beer's Law
C) Boyle's Law
D) Newton's law - ✔️✔️B
100% Verified Answers
69. A term in compleximetry used to indicate a determination of a metal in the
presence of another metal is:
A) Redox
B) Masking
C) Linking
D) Complexing - ✔️✔️B
70. Two substances reacting upon reaching the end point must have the same:
A) Normality
B) Volume
C) No. of equivalents
D) Weight - ✔️✔️C
71. All of the following are optical devices or instruments, except:
A) pH meter
B) Spectrophotometer
C) Colorimeter
D) Flame photometer - ✔️✔️A
,72. The method of assay for sulfonamides is:
A) Acid-base titration
B) Gravimetric
C) Diazotization with nitrite
D) Redox titration - ✔️✔️C
73. Which of the following is a reducing agent?
A) Ascorbic acid
B) KMNO4
C) Iodine
D) Hydrochloric acid - ✔️✔️A
74. In using spectrophotometer to measure the concentration of a sample, the
following data were obtained: absorbance of the standard solution = 0.39;
absorbance of the sample solution = 0.42; concentration of the standard =15mcg.
The concentration of the sample is:
A) 16.15mcg
B) 17.5mcg
C) 15.75mcg
D) 16.0mcg - ✔️✔️C
76. Radiant energy required in the analysis of drugs under Fluorometry is in:
,A) UV region
B) Visible region
C) IR region
D) A and B - ✔️✔️A
77. The method of assay for Vitamin B12 and calcium pantothenate is by:
A) Iodimetry
B) Microbial-turbidimetric method
C) Fluorometry
D) Redox titration - ✔️✔️B
78. The pH of a solution is usually measured by using:
A) Platinum electrode
B) Glass electrode
C) Mercury electrode
D) Calomel electrode - ✔️✔️B
79. Nuclear Magnetic Resonance (NMR) is used for:
A) Radioisotopes
B) Irradiation
, C) Identification of chemicals
D) A and B - ✔️✔️D
80. In the assay of acetic acid (MW = 60.05), each mL of 1N NaOH is equivalent to:
A) 0.60000g of acetic acid
B) 0.00605g of acetic acid
C) 0.60050g of acetic acid
D) 0.06005g of acetic acid - ✔️✔️D
81. Chemical analysis, which determines the amount or percentage content of a
certain component in a sample:
A) Qualitative
B) Proximate
C) Quantitative
D) Gravimetric - ✔️✔️C
82. One of the fundamental laws in spectrophotometry is:
A) Law of Mass Action
B) Beer's Law
C) Boyle's Law
D) Newton's law - ✔️✔️B
