ICH and WHO guidelines for validation MCQs With Answer

ICH and WHO Guidelines for Validation MCQs With Answer

Validation is a cornerstone of Modern Pharmaceutics and a critical expectation of global regulators. This MCQ set is designed for M. Pharm (MPH 103T) students to deepen understanding of ICH and WHO guidance governing validation of analytical procedures, processes, cleaning, and equipment qualification. Questions dive into ICH Q2 concepts (accuracy, precision, specificity, LOD/LOQ, robustness), lifecycle elements from ICH Q8/Q9/Q10, and WHO expectations on process and cleaning validation, risk-based thinking, ongoing process verification, and health-based exposure limits. Each item emphasizes applied decision-making, statistics, and correct terminology used in regulatory submissions and GMP practice. Use this as a focused drill to master essential principles and prepare for both exams and real-world validation tasks.

Q1. According to ICH Q2, which validation characteristic is essential for identification tests?

• Specificity
• Linearity
• Limit of quantitation (LOQ)
• Accuracy

Correct Answer: Specificity

Q2. As per ICH Q2, the commonly used formula for LOQ based on the standard deviation of the response (σ) and slope (S) of the calibration curve is:

• 3.3σ/S
• 10σ/S
• S/3.3σ
• 3σ/S

Correct Answer: 10σ/S

Q3. In ICH Q2 terminology, robustness is best described as the method’s ability to:

• Produce the same results across laboratories
• Remain unaffected by small, deliberate variations in method parameters
• Detect the presence of a specified analyte in the presence of matrix
• Quantify low-level impurities at the limit of quantitation

Correct Answer: Remain unaffected by small, deliberate variations in method parameters

Q4. Which statement about linearity evaluation is consistent with ICH Q2 guidance?

• ICH mandates a correlation coefficient of at least 0.999 for acceptance
• ICH recommends statistical evaluation without prescribing a fixed r threshold
• ICH forbids the use of weighted regression in any case
• ICH requires six concentration levels for all analytical procedures

Correct Answer: ICH recommends statistical evaluation without prescribing a fixed r threshold

Q5. The “range” of an analytical procedure, per ICH Q2, is defined as the interval:

• Between the detection limit and quantitation limit
• Between the highest and lowest concentrations with acceptable accuracy, precision, and linearity
• Over which the instrument detector remains linear
• Of robustness where small changes do not affect results

Correct Answer: Between the highest and lowest concentrations with acceptable accuracy, precision, and linearity

Q6. Specificity, as defined in ICH Q2, refers to the ability to:

• Quantify trace impurities below 0.05%
• Provide identical results across analysts
• Assess unequivocally the analyte in the presence of components such as impurities, degradants, and matrix
• Maintain system suitability over 24 hours

Correct Answer: Assess unequivocally the analyte in the presence of components such as impurities, degradants, and matrix

Q7. According to WHO guidance on process validation under GMP, the commonly accepted minimum number of consecutive successful batches for prospective validation (unless risk-justified otherwise) is:

• One
• Two
• Three
• Five

Correct Answer: Three

Q8. In WHO’s lifecycle approach, the activity that provides ongoing assurance that a process remains in a state of control is termed:

• Ongoing process verification
• Retrospective validation
• Requalification
• Concurrent validation

Correct Answer: Ongoing process verification

Q9. For setting cleaning validation limits, WHO recommends using which primary scientific basis?

• Health-based exposure limits (HBEL), e.g., PDE-derived values
• A universal 10 ppm limit in the next product
• 1/1000th of the minimum daily dose only
• Visual cleanliness only

Correct Answer: Health-based exposure limits (HBEL), e.g., PDE-derived values

Q10. In cleaning validation, recovery studies are performed primarily to:

• Calibrate the HPLC detector sensitivity
• Correct measured residues for sampling efficiency from specific surfaces
• Determine visual cleanliness thresholds
• Establish health-based exposure limits for APIs

Correct Answer: Correct measured residues for sampling efficiency from specific surfaces

Q11. The correct sequence of equipment qualification stages in GMP is:

• IQ → OQ → PQ → DQ
• DQ → IQ → OQ → PQ
• OQ → IQ → PQ → DQ
• DQ → PQ → OQ → IQ

Correct Answer: DQ → IQ → OQ → PQ

Q12. Under ICH Q10 principles, which change most clearly warrants formal revalidation or supplemental validation?

• A change in a critical process parameter outside the established design space
• An editorial update to an SOP without procedural impact
• Replacement of a worn gasket with an identical, qualified part
• Routine software patch to a data system that does not affect validated functions

Correct Answer: A change in a critical process parameter outside the established design space

Q13. Which of the following is NOT a typical quality risk management tool referenced in ICH Q9?

• Failure Modes and Effects Analysis (FMEA)
• Hazard Analysis and Critical Control Points (HACCP)
• Fault Tree Analysis (FTA)
• Kaplan–Meier survival analysis

Correct Answer: Kaplan–Meier survival analysis

Q14. In ICH Q8, the “design space” is defined as:

• A single set-point for all critical parameters
• A multidimensional combination and interaction of input variables that assures quality
• The validated laboratory space dedicated to method development
• The allowable tolerance for analytical bias

Correct Answer: A multidimensional combination and interaction of input variables that assures quality

Q15. Which statement best describes analytical method transfer in a GMP context?

• A full revalidation of a compendial method at the receiving site
• A documented process that qualifies a receiving laboratory to use a method originating at a sending laboratory
• An informal exchange of procedures between analysts
• A substitute for system suitability testing in routine analysis

Correct Answer: A documented process that qualifies a receiving laboratory to use a method originating at a sending laboratory

Q16. System suitability tests (SST) are best classified as:

• Mandatory validation characteristics in ICH Q2
• Process validation acceptance criteria
• Routine checks to verify system performance during method use
• Design space parameters defined in ICH Q8

Correct Answer: Routine checks to verify system performance during method use

Q17. Which statement aligns with WHO’s risk-based approach to cleaning validation across product families?

• Bracketing worst-case products and equipment can be justified with scientific rationale
• Bracketing is prohibited under all circumstances
• Only products with identical formulations may be bracketed
• Bracketing applies only to process validation, not cleaning validation

Correct Answer: Bracketing worst-case products and equipment can be justified with scientific rationale

Q18. For estimating intermediate precision across days and analysts, the most appropriate statistical approach is:

• Two-way ANOVA (random-effects) on replicate data
• Single-point calibration comparison
• Unpaired t-test between two runs
• Mann–Whitney U test for nonparametric medians

Correct Answer: Two-way ANOVA (random-effects) on replicate data

Q19. For quantitative impurity testing per ICH Q2, which requirement is correct?

• Determination of LOQ is required
• Only LOD is required
• Neither LOQ nor linearity is required
• Robustness experiments are prohibited

Correct Answer: Determination of LOQ is required

Q20. Regarding compendial analytical procedures, WHO expects that a receiving laboratory should:

• Perform a full ICH validation regardless of prior use
• Verify the method’s suitability under actual conditions of use rather than fully revalidate
• Take no action if the method is in a pharmacopoeia
• Only run system suitability tests without any verification

Correct Answer: Verify the method’s suitability under actual conditions of use rather than fully revalidate

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