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West African Postgraduate College of Pharmacists Part I Examination

Practice Questions100 questions

2026 Statistics

Key Facts: WAPCP Primary Exam

50%

Passing Score

WAPCP

$200

Exam Fee

WAPCP

3 years

Post-Registration Exp.

WAPCP

2 lectures

Mandatory Update Lectures

WAPCP

120 Qs

Exam Length

WAPCP

3 hours

Time Limit

WAPCP

The WAPCP Primary Examination is a computer-based assessment consisting of multiple-choice questions testing basic and clinical sciences relevant to pharmacy practice. The passing score is 50% on all papers. Candidates must be registered pharmacists in a WAHO country with at least 3 years of post-basic experience and must attend at least two update lectures to qualify.

Sample WAPCP Primary Practice Questions

Try these sample questions to test your WAPCP Primary exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which of the following flow behaviors is characterized by a yield value (shear stress that must be exceeded before flow begins) and is typically displayed by concentrated suspensions?

A.Newtonian flow

B.Plastic (Bingham) flow

C.Pseudoplastic flow

D.Dilatant flow

Explanation: Plastic flow (Bingham bodies) does not begin until a certain shear stress, known as the yield value, is exceeded. Once the yield value is passed, the material behaves like a Newtonian fluid where shear rate is proportional to shear stress.

2According to the Arrhenius equation, what happens to the rate constant (k) of a chemical degradation reaction when the activation energy (Ea) is increased at a constant temperature?

A.The rate constant increases exponentially

B.The rate constant decreases exponentially

C.The rate constant remains unchanged

D.The rate constant increases linearly

Explanation: The Arrhenius equation is k = A * e^(-Ea / RT). Because the activation energy (Ea) is in the negative exponent, an increase in Ea results in an exponential decrease in the rate constant (k), representing a slower reaction rate.

3Which equations relates the pH of a buffer solution to the pKa of the weak acid and the ratio of the concentrations of the conjugate base and weak acid?

A.Noyes-Whitney equation

B.Henderson-Hasselbalch equation

C.Michaelis-Menten equation

D.Stokes' law

Explanation: The Henderson-Hasselbalch equation (pH = pKa + log([conjugate base]/[weak acid])) quantitatively describes the relationship between pH, pKa, and the ratio of salt to acid in a buffer system.

4In the design of emulsions, what is the primary function of a surfactant with a high Hydrophilic-Lipophilic Balance (HLB) value of 8 to 16?

A.To act as an antifoaming agent

B.To act as a water-in-oil (w/o) emulsifying agent

C.To act as an oil-in-water (o/w) emulsifying agent

D.To act as a wetting agent

Explanation: Surfactants with high HLB values (typically 8 to 16) are more hydrophilic and are used to stabilize oil-in-water (o/w) emulsions. Hydrophilic surfactants prefer the aqueous external phase, helping disperse the internal oil droplets.

5Which of the following describes the mechanism of chemical sterilization by ethylene oxide gas?

A.Coagulation and denaturation of cellular proteins

B.Alkylation of cellular macromolecules such as DNA and proteins

C.Interference with cell wall synthesis via transpeptidase inhibition

D.Generation of free radicals causing lipid peroxidation of the cell membrane

Explanation: Ethylene oxide is a powerful alkylating agent that sterilizes by replacing labile hydrogen atoms in proteins and nucleic acids with alkyl groups. This disrupts essential metabolic and replication processes in micro-organisms.

6In chromatography, which parameter is a measure of the column's efficiency, indicating the number of theoretical plates (N)?

A.Retention factor (k')

B.Selectivity factor (alpha)

C.Resolution (Rs)

D.Height Equivalent to a Theoretical Plate (HETP)

Explanation: The column efficiency is expressed by the number of theoretical plates (N) or the Height Equivalent to a Theoretical Plate (HETP = L/N, where L is column length). A smaller HETP indicates a more efficient column with narrower peaks.

7Which of the following organic functional groups is most susceptible to hydrolytic degradation in an aqueous environment?

A.Ether

B.Ester

C.Aliphatic amine

D.Ketone

Explanation: Esters are highly susceptible to hydrolytic cleavage in the presence of water, especially under acidic or basic conditions, breaking down into a carboxylic acid and an alcohol. Examples of ester-containing drugs include aspirin and procaine.

8According to the Noyes-Whitney equation, which modification will increase the dissolution rate of a poorly soluble drug?

A.Increasing the particle size of the drug powder

B.Increasing the viscosity of the dissolution medium

C.Decreasing the surface area of the drug particles

D.Decreasing the thickness of the stagnant diffusion layer

Explanation: The Noyes-Whitney equation is dC/dt = (D * A * (Cs - C)) / h. Decreasing the thickness of the stagnant diffusion layer (h), typically achieved by increasing agitation or stirring, increases the dissolution rate.

9Which type of polymorphism represents a drug substance where one crystalline form is stable over the entire temperature range below the melting point, while other forms are metastable?

A.Monotropic polymorphism

B.Enantiotropic polymorphism

C.Amorphous state

D.Pseudopolymorphism

Explanation: In monotropic systems, one polymorph is the most stable form at all temperatures below the melting point. Transition from the metastable form to the stable form is irreversible and occurs in one direction only.

10What is the primary product of the Phase II conjugation reaction of xenobiotics with glucuronic acid?

A.A highly lipophilic compound excreted in bile

B.A highly polar, water-soluble glucuronide conjugate

C.An unstable epoxide intermediate

D.A deactivated methylated metabolite

Explanation: Glucuronidation (mediated by UDP-glucuronosyltransferases) conjugates xenobiotics with highly polar, water-soluble glucuronic acid. This drastically increases their water solubility, promoting excretion in urine or bile.

About the WAPCP Primary Exam

The WAPCP Primary Fellowship Examination is the entry-level assessment for pharmacists seeking postgraduate specialization in West Africa. The exam tests basic pharmaceutical sciences, physiology, biochemistry, pathology, pharmacology, and biostatistics. Passing is a prerequisite to enter the Part I Fellowship residency training program.

Questions

120 scored questions

Time Limit

3 hours

Passing Score

50%

Exam Fee

$200 (West African Postgraduate College of Pharmacists (WAPCP))

WAPCP Primary Exam Content Outline

25%

Principles of Pathophysiology and Therapeutics

Integration of physiological processes and disease pathology to understand therapeutic management.

15%

Principles of Drug Action and Basic Pharmacokinetics

Fundamental pharmacological principles, drug-receptor interactions, absorption, distribution, metabolism, and excretion.

15%

Drug Delivery Systems and Pharmaceutical Product Quality

Pharmaceutics, physical pharmacy, dosage form design, drug stability, kinetics, and quality assurance.

15%

Biostatistics and Research Methodology

Statistical methods, hypothesis testing, clinical trial design, descriptive and inferential statistics.

10%

Introduction to Toxicology

General toxicological principles, target organ toxicity, poisons, and management of toxic overdoses.

10%

Introduction to Public Health Pharmacy

Epidemiology, healthcare systems, role of pharmacists in public health and disease prevention.

10%

Health Policy, Laws and Ethics

Pharmacy laws, regulatory bodies in West Africa, ethical frameworks, and policy guidelines.

How to Pass the WAPCP Primary Exam

What You Need to Know

Passing score: 50%
Exam length: 120 questions
Time limit: 3 hours
Exam fee: $200

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

WAPCP Primary Study Tips from Top Performers

1Allocate study time according to the blueprint weights — focus heavily on Pathophysiology (25%) and Pharmacology/Pharmacokinetics (15%).

2Master pharmacokinetic calculations including loading dose, maintenance dose, clearance, and volume of distribution.

3Understand the physicochemical principles of dosage forms, including rheology, emulsions, suspensions, and stability kinetics (Arrhenius equation).

4Review basic biostatistics thoroughly, specifically hypothesis testing (Type I/II errors, p-values), paired and independent t-tests, ANOVA, and epidemiological metrics like relative risk and odds ratios.

5Attend the mandatory update lectures as they directly reflect key focus areas and recent updates by the exam board.

Frequently Asked Questions

What is the passing score for the WAPCP Primary Exam?

The minimum passing score for all papers in the WAPCP Primary Examination is 50%. Candidates must pass all components of the exam to be successful.

How much is the WAPCP Primary Exam fee?

As of 2026, the examination fee for the WAPCP Primary Examination is $200 USD (or the equivalent in Nigerian Naira). This fee does not include the cost of mandatory update lectures or preparatory courses.

Who is eligible to sit for the WAPCP Primary Exam?

Candidates must be registered pharmacists in a West African Health Organization (WAHO) member country with at least three (3) years of post-qualification experience. Additionally, candidates must attend at least two update lectures organized by the College to qualify.

What is the format of the WAPCP Primary Examination?

The WAPCP Primary Examination is a computer-based test (CBT) consisting of multiple-choice questions (MCQs) covering basic sciences, pharmaceutical sciences, pharmacology, pathophysiology, and biostatistics.

Are there any exemptions for the WAPCP Primary Exam?

Yes, candidates who hold relevant postgraduate academic or professional qualifications (such as an M.Pharm, Ph.D., or other clinical residency credentials) can apply for exemption from the Primary update lectures and exams by submitting their transcripts for evaluation.

How long is the WAPCP Fellowship program?

The entire Fellowship program takes several years. After passing the Primary Exam, candidates enter the Part I level (Membership course), which takes 2 years, followed by the Part II level (Fellowship course), which takes another 2 years.