Pharmacy Practice MCQ » PHARMACAREERS

Pharmacy Practice MCQ, in this article we will solve, Practice MCQ under subject Physical Pharmaceutics. Read following article for your reference.

Sorensen’s PH Scale And PH Determination » PHARMACAREERS

What does the term “pH” stand for?
- a) Potential of Hydrogen
- b) Power of Hydrogen
- c) Potential of Hydroxide
- d) Power of Hydroxide
Who introduced the pH scale?
- a) Albert Einstein
- b) Søren Peter Lauritz Sørensen
- c) Marie Curie
- d) Louis Pasteur
In what year was the pH scale introduced?
- a) 1900
- b) 1909
- c) 1915
- d) 1920
What is the pH value of a neutral solution?
- a) 0
- b) 7
- c) 14
- d) 10
A pH value below 7 indicates what type of solution?
- a) Neutral
- b) Acidic
- c) Basic
- d) Alkaline
A pH value above 7 indicates what type of solution?
- a) Neutral
- b) Acidic
- c) Basic
- d) Saline
What is the formula to calculate pH?
- a) pH = log [H+]
- b) pH = -log [H+]
- c) pH = [H+]
- d) pH = -[H+]
What does [H+] represent in the pH formula?
- a) Concentration of hydroxide ions
- b) Concentration of hydrogen ions
- c) Concentration of water molecules
- d) Concentration of oxygen ions
Which method involves the use of a pH meter?
- a) Calorimetric method
- b) Electrometric method
- c) Titration method
- d) Gravimetric method
What does the electrometric method measure?
- a) Color change
- b) Voltage difference
- c) Temperature change
- d) Pressure difference
Which method uses pH indicators?
- a) Electrometric method
- b) Calorimetric method
- c) Volumetric method
- d) Potentiometric method
What is the main advantage of the electrometric method?
- a) Cost-effectiveness
- b) Simplicity
- c) High accuracy
- d) Quick results
What is a common use of the calorimetric method?
- a) Precise pH measurement
- b) Quick and approximate pH measurement
- c) Measuring temperature
- d) Measuring pressure
What is the pH range of the pH scale?
- a) 0 to 7
- b) 0 to 10
- c) 0 to 14
- d) 0 to 20
What does a pH of 0 indicate?
- a) Neutral solution
- b) Highly acidic solution
- c) Highly basic solution
- d) Slightly acidic solution
What does a pH of 14 indicate?
- a) Neutral solution
- b) Highly acidic solution
- c) Highly basic solution
- d) Slightly basic solution
What is the significance of pH in pharmaceutical formulations?
- a) It affects the color of the drug
- b) It impacts the solubility, stability, and bioavailability of drugs
- c) It determines the weight of the drug
- d) It affects the taste of the drug
Which method is less precise but cost-effective for pH measurement?
- a) Electrometric method
- b) Calorimetric method
- c) Volumetric method
- d) Potentiometric method
What is the role of a reference electrode in the electrometric method?
- a) To measure temperature
- b) To measure voltage difference
- c) To measure pressure
- d) To measure color change
What is the main limitation of the calorimetric method?
- a) High cost
- b) Complexity
- c) Less precision
- d) Time-consuming
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-7 M?
- a) 0
- b) 7
- c) 14
- d) 10
What does a pH meter convert the voltage difference into?
- a) Temperature
- b) Pressure
- c) pH value
- d) Color
What is the importance of controlling pH in pharmaceutical formulations?
- a) To enhance the color of the drug
- b) To ensure the effectiveness and safety of the drug
- c) To increase the weight of the drug
- d) To improve the taste of the drug
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-3 M?
- a) 3
- b) 7
- c) 10
- d) 14
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-10 M?
- a) 0
- b) 4
- c) 7
- d) 10
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-1 M?
- a) 1
- b) 7
- c) 10
- d) 14
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-5 M?
- a) 5
- b) 7
- c) 10
- d) 14
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-12 M?
- a) 0
- b) 2
- c) 7
- d) 12
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-8 M?
- a) 0
- b) 6
- c) 8
- d) 14
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-2 M?
- a) 2
- b) 7
- c) 10
- d) 14

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