WorksheetsChapter 10 : Stability testing management
Total questions: 15
Worksheet time: 8mins
Which objective best describes why stability testing determines shelf life for a medicine?
To meet hospital inventory forecasting
To compare brands in the marketplace
To reduce manufacturing costs annually
To define safe and effective usage period
Under ICH Q1A, what is the standard accelerated storage condition for most products?
30°C ± 2°C and 65% RH ± 5%
5°C ± 2°C and 35% RH ± 5%
25°C ± 2°C and 60% RH ± 5%
40°C ± 2°C and 75% RH ± 5%
Which factor primarily explains faster chemical degradation at higher temperatures?
Arrhenius principle with increased rate constants
Galenic principle of excipient balance
Henry’s law of gas solubility in liquids
Le Chatelier principle shifting equilibria
For long‑term stability studies in Climatic Zone IVb, which standard condition is typically applied?
30°C ± 2°C and 65% RH ± 5%
20°C ± 2°C and 50% RH ± 5%
40°C ± 2°C and 75% RH ± 5%
25°C ± 2°C and 60% RH ± 5%
Which chemical factor is most likely to accelerate oxidation of drugs like adrenaline?
Exposure to oxygen in headspace
Increase in particle size distribution
Polymorphism of the active crystal
Phase separation within emulsion
How does particle size influence physical stability of solid dosage forms?
Uniform particles eliminate hydrolysis and oxidation
Larger particles reduce flow and improve stability
Irregular particles prevent photodegradation entirely
Smaller particles increase surface area, faster degradation
Which requirement ensures analytical methods can track product degradation reliably?
Reliance on vendor certificates
Annual instrument calibration only
Use of non‑specific color tests
Validated stability‑indicating capability
A formulation shows incompatibility between API and excipient. What is the most appropriate stability risk?
Improved polymorphic consistency
Accelerated degradation from interactions
Guaranteed protection from photolysis
Elimination of microbial contamination
Which batch selection approach best supports a robust stability program for a new tablet product?
Select four batches with varying packaging types
Evaluate two batches from different formulations
Test one pilot batch under mixed processes
Use minimum three batches with same process
When choosing storage conditions for stability studies, which factor most directly determines temperature and humidity settings?
Marketing authorization submission date
Supplier lead time variability
Climatic zone classification of markets
Packaging artwork color scheme
Which combination reflects typical long‑term and accelerated sampling schedules for stability studies?
Long‑term 0–6 months; accelerated 0–24 months
Long‑term 3–9 months; accelerated 12–24 months
Long‑term 0–12 months; accelerated 0–18 months
Long‑term 0–24 months; accelerated 0–6 months
A method is considered stability‑indicating when it can do which action?
Estimate packaging headspace volume
Measure excipient particle morphology
Separate API from degradation products
Predict patient adherence behavior
Which set of tests is most appropriate for routine stability evaluation of solid oral dosage forms?
Genomic sequencing, proteomics, metabolomics
Thermal imaging, RFID tracking, barcode checks
Assay, degradation products, dissolution, pH
Colorimetry, XRPD, magnetic susceptibility
What is the primary purpose of ongoing (commitment) stability studies after approval?
Confirm consistency of commercial batches
Reduce regulatory submission formatting
Determine new clinical trial endpoints
Optimize sales forecasting algorithms
Which outcome best captures the importance of pharmaceutical stability testing for public health?
Ensures patient safety and therapeutic effectiveness
Improves brand logo recognition in clinics
Accelerates social media marketing engagement
Eliminates the need for GMP documentation entirely
