Quality metrics in pharma MCQs With Answer

Introduction

Quality metrics in pharmaceutical manufacturing are essential tools for monitoring processes, ensuring product safety, and demonstrating regulatory compliance. This collection of MCQs is designed for M.Pharm students studying Quality Management Systems (MQA 102T) to deepen understanding of common metrics such as process capability indices, yield measurements, control charts, environmental monitoring, CAPA effectiveness, supplier performance, and stability indicators. Each question emphasizes practical interpretation and application of metrics used in batch release, process validation, and continuous improvement. Use these MCQs to test and refine your ability to select appropriate metrics, interpret trends, and apply quality tools to real-world pharmaceutical scenarios.

Q1. Which metric specifically measures the proportion of units that pass quality specifications without any rework?

• Overall yield
• First Pass Yield (FPY)
• Reject rate
• Process capability (Cpk)

Correct Answer: First Pass Yield (FPY)

Q2. What does the process capability index Cpk quantify?

• The spread of the process relative to specification limits only
• The combined effect of process variability and mean shift relative to spec limits
• The proportion of defects per million opportunities
• The average time between failures

Correct Answer: The combined effect of process variability and mean shift relative to spec limits

Q3. Which three components are multiplied to calculate Overall Equipment Effectiveness (OEE)?

• Availability, Performance, and Quality
• Uptime, Downtime, and Yield
• Throughput, Defect Rate, and MTBF
• Cycle Time, Lead Time, and Changeover Time

Correct Answer: Availability, Performance, and Quality

Q4. Which control chart is most appropriate for detecting shifts in the process mean for a continuous measurement like assay value?

• X-bar chart
• P-chart
• c-chart
• Pareto chart

Correct Answer: X-bar chart

Q5. What is the primary purpose of a Measurement System Analysis (Gage R&R) in pharmaceutical quality metrics?

• To determine supply chain lead time variability
• To quantify measurement variability relative to process variation
• To assess microbial contamination rates
• To calculate process capability indices

Correct Answer: To quantify measurement variability relative to process variation

Q6. What defect rate corresponds to the Six Sigma quality goal commonly cited in manufacturing?

• 3.4 defects per million opportunities
• 34 defects per million opportunities
• 0.34 defects per thousand opportunities
• 340 defects per million opportunities

Correct Answer: 3.4 defects per million opportunities

Q7. Which metric is most suitable for trending chemical stability in a product over shelf life studies?

• Assay degradation rate (%) over time
• Overall equipment effectiveness (OEE)
• Supplier on-time delivery
• First pass yield

Correct Answer: Assay degradation rate (%) over time

Q8. Which of the following is an appropriate metric set for evaluating CAPA performance?

• CAPA closure time, recurrence rate of issues, and effectiveness verification
• Only the number of CAPAs opened per year
• Only the time to open a CAPA after detection
• Number of internal audits conducted

Correct Answer: CAPA closure time, recurrence rate of issues, and effectiveness verification

Q9. For environmental monitoring in a sterile facility, which metric best indicates acceptable control?

• Number of non-conformances in product testing
• Percentage of samples within specified action and alert limits
• Average assay potency across batches
• Time to disposition of stability samples

Correct Answer: Percentage of samples within specified action and alert limits

Q10. The Pareto principle applied in pharmaceutical quality suggests which practical focus?

• 80% of compliance activities produce 20% of benefit
• 20% of causes account for about 80% of the problems
• Quality metrics should be evenly distributed across all processes
• All deviations are equally important and require equal effort

Correct Answer: 20% of causes account for about 80% of the problems

Q11. Which set of metrics collectively provides a robust measure of supplier quality performance?

• Supplier defect rate, on-time delivery, and supplier audit score
• Only the supplier’s price per unit
• Internal batch yield and in-house rework rate
• Number of employees at supplier site

Correct Answer: Supplier defect rate, on-time delivery, and supplier audit score

Q12. Which characteristic is essential for a stability-indicating analytical method used as a quality metric?

• Specificity for degradation products
• Supplier qualification status
• Operator skill level
• Equipment OEE

Correct Answer: Specificity for degradation products

Q13. In regulatory terminology, what does “OOS” stand for when encountered in quality testing?

• Out of Sequence
• Out of Specification
• Operational Safety
• Overt Operational Signal

Correct Answer: Out of Specification

Q14. Which metric is most appropriate for trending bioburden in non-sterile manufacturing areas?

• Mean CFU (colony forming units) per sample over time
• Batch throughput per hour
• Average assay percent label claim
• Number of CAPAs opened per quarter

Correct Answer: Mean CFU (colony forming units) per sample over time

Q15. Which capability index evaluates process spread without considering centering within specifications?

• Cpk
• Cp
• Ppk
• FPY

Correct Answer: Cp

Q16. How is First Pass Yield (FPY) typically calculated as a percentage?

• (Total units produced / Units passing inspection) × 100
• (Units passing without rework / Total units entering the process) × 100
• (Rejected units / Total produced) × 100
• (Number of batches released on time / Total batches) × 100

Correct Answer: (Units passing without rework / Total units entering the process) × 100

Q17. Which control chart is suited for monitoring the proportion of nonconforming units in successive sample lots?

• c-chart
• p-chart (proportion nonconforming)
• X-bar and R chart
• Histograms

Correct Answer: p-chart (proportion nonconforming)

Q18. What is the most direct metric to assess batch release timeliness?

• On-Time Release Rate (percentage of batches released within target time)
• Number of OOS investigations
• Supplier lead time variability
• Average assay value

Correct Answer: On-Time Release Rate (percentage of batches released within target time)

Q19. Which root cause analysis tool is commonly used in pharmaceutical quality investigations to map potential causes of a problem?

• Pareto chart
• Fishbone (Ishikawa) diagram
• Control chart
• OEE calculation

Correct Answer: Fishbone (Ishikawa) diagram

Q20. In Statistical Process Control, which pattern indicates a non-random trend in process behavior?

• One point outside control limits only
• Six or more consecutive points trending up or down
• Any two consecutive points within the center line
• Uniform scatter evenly distributed around the mean

Correct Answer: Six or more consecutive points trending up or down

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