Mock Test 4 — 50 MCQs
Time: 45 minutes
Marks: 50
Click on “Mock Test 4 ” to open the Google Form and attempt the pharmacy MCQs to assess your preparation for the KRL Pharmacist Test. This pharmacist mock test covers important topics relevant to pharmacy exam preparation.
After completing the test, check your answers and read the brief explanations provided at the end of this post to identify your strengths and areas that need further revision.
Mock Test 4
KRL Pharmacist Test — ADR, Pharmacovigilance & Drug Interactions
50 High-Yield MCQs
A. Adverse Drug Reactions (ADR)
1. Which of the following best defines an adverse drug reaction (ADR)?
A. Any medication error occurring during dispensing
B. A harmful and unintended response to a drug at normal doses
C. Any therapeutic effect produced by a drug
D. A drug interaction that increases efficacy
Answer: B
2. Which type of ADR is generally dose-dependent and predictable from the known pharmacological action of the drug?
A. Type A
B. Type B
C. Type C
D. Type D
Answer: A
3. Which characteristic is most typical of a Type B adverse drug reaction?
A. Dose-dependent
B. Predictable
C. Idiosyncratic or allergic
D. Related to cumulative dose
Answer: C
4. A patient develops severe hypoglycemia after receiving an excessive dose of insulin. This is best classified as:
A. Type A ADR
B. Type B ADR
C. Type C ADR
D. Type E ADR
Answer: A
5. A patient develops anaphylaxis after receiving a therapeutic dose of penicillin. This is an example of:
A. Type A ADR
B. Type B ADR
C. Type C ADR
D. Type F ADR
Answer: B
6. Which type of ADR is associated with long-term drug therapy?
A. Type A
B. Type B
C. Type C
D. Type E
Answer: C
7. A patient develops tardive dyskinesia after prolonged antipsychotic therapy. This is most consistent with:
A. Type A ADR
B. Type B ADR
C. Type C ADR
D. Type E ADR
Answer: C
8. Which ADR type is associated with carcinogenicity, teratogenicity, or delayed effects?
A. Type A
B. Type B
C. Type C
D. Type D
Answer: D
9. Withdrawal symptoms after abrupt discontinuation of a long-term medication are classified as:
A. Type A
B. Type B
C. Type D
D. Type E
Answer: D
10. A patient experiences therapeutic failure because a drug interaction reduces the drug's concentration below the therapeutic range. This is classified as:
A. Type A
B. Type C
C. Type E
D. Type F
Answer: D
11. Which factor generally increases the risk of ADRs in older adults?
A. Increased renal clearance
B. Polypharmacy
C. Increased hepatic metabolism
D. Reduced number of medications
Answer: B
12. Which patient is generally at the highest risk of developing drug-related adverse effects?
A. Healthy young adult taking one medication
B. Older patient taking multiple medications
C. Healthy adolescent taking a short course of antibiotics
D. Adult receiving a single topical medication
Answer: B
13. Which of the following is an example of a serious ADR?
A. Mild transient nausea
B. Slight unpleasant taste
C. Drug-induced hospitalization
D. Mild headache lasting 10 minutes
Answer: C
14. An ADR is considered serious if it:
A. Is unpleasant to the patient
B. Requires hospitalization or prolongs hospitalization
C. Occurs after the first dose
D. Is always dose-dependent
Answer: B
15. Which of the following is an example of a preventable ADR?
A. Anaphylaxis in a patient with no previous exposure
B. Severe hypoglycemia caused by an inappropriate insulin dose
C. Idiosyncratic hepatotoxicity
D. Genetic drug hypersensitivity
Answer: B
B. Pharmacovigilance
16. The primary goal of pharmacovigilance is to:
A. Increase medication sales
B. Detect, assess, understand, and prevent adverse effects or other drug-related problems
C. Determine drug prices
D. Develop new dosage forms
Answer: B
17. Pharmacovigilance is primarily concerned with:
A. Drug manufacturing only
B. Detection and prevention of drug-related harm
C. Drug marketing strategies
D. Prescription writing only
Answer: B
18. Which method of ADR reporting relies on healthcare professionals voluntarily submitting suspected ADR reports?
A. Active surveillance
B. Passive surveillance
C. Cohort monitoring
D. Prescription-event monitoring
Answer: B
19. Which pharmacovigilance method actively searches for adverse events rather than waiting for spontaneous reports?
A. Passive surveillance
B. Active surveillance
C. Voluntary reporting
D. Case reporting only
Answer: B
20. A spontaneous ADR report is best described as:
A. A report generated automatically from laboratory data
B. An unsolicited report of a suspected adverse reaction submitted by a healthcare professional or patient
C. A report generated only during a clinical trial
D. A mandatory prescription audit
Answer: B
21. What is the major limitation of spontaneous ADR reporting systems?
A. They cannot detect serious reactions
B. Underreporting
C. They require randomized allocation
D. They only detect dose-related reactions
Answer: B
22. Which type of adverse event is particularly important to report even when the causal relationship is uncertain?
A. Suspected serious or unexpected ADR
B. Expected therapeutic effect
C. Normal drug response
D. Patient preference
Answer: A
23. In pharmacovigilance, a safety signal refers to:
A. Proof that a drug causes an ADR
B. Information suggesting a new or previously unknown causal association that warrants investigation
C. A medication prescription
D. A manufacturing license
Answer: B
24. Which statistical approach is commonly used by spontaneous-reporting databases to help detect potential safety signals?
A. Disproportionality analysis
B. Kaplan-Meier analysis only
C. Randomization
D. Blinding
Answer: A
25. The primary purpose of signal detection is to:
A. Confirm every suspected ADR immediately
B. Identify potential safety concerns requiring further evaluation
C. Determine the drug's retail price
D. Replace clinical trials
Answer: B
26. Which organization coordinates the international WHO Programme for International Drug Monitoring?
A. WHO
B. FDA
C. EMA
D. CDC
Answer: A
27. The WHO global individual case safety report database is known as:
A. MedDRA
B. VigiBase
C. PubMed
D. Cochrane Library
Answer: B
28. MedDRA is primarily used for:
A. Drug manufacturing
B. Standardized coding and classification of medical information, including adverse events
C. Calculating drug doses
D. Determining drug prices
Answer: B
29. An Individual Case Safety Report (ICSR) primarily contains information about:
A. A suspected adverse event associated with a medicinal product in an individual patient
B. National drug expenditure
C. Hospital inventory levels
D. Drug manufacturing costs
Answer: A
30. Which element is essential when evaluating whether a drug may have caused an adverse event?
A. Patient's favorite medication
B. Temporal relationship between drug exposure and event
C. Color of the medication package
D. Manufacturer's advertising budget
Answer: B
C. Causality Assessment & ADR Evaluation
31. Which causality category indicates that an adverse event is clearly related to drug administration and cannot reasonably be explained by another cause?
A. Unlikely
B. Possible
C. Probable
D. Certain
Answer: D
32. Which causality category means that an alternative explanation for the event is also possible?
A. Certain
B. Probable
C. Possible
D. Definite
Answer: C
33. The Naranjo algorithm is used to:
A. Calculate renal function
B. Assess the probability that a drug caused an adverse event
C. Determine drug potency
D. Calculate medication costs
Answer: B
34. Which factor strengthens the suspected causal relationship between a drug and an adverse event?
A. The event occurred before the drug was administered
B. The reaction improves after withdrawal of the suspected drug
C. The patient has no temporal relationship to drug exposure
D. The event occurs only before treatment
Answer: B
35. The disappearance or improvement of an adverse event after discontinuation of the suspected drug is called:
A. Rechallenge
B. Dechallenge
C. Cross-tolerance
D. Accumulation
Answer: B
36. Recurrence of the same adverse reaction after reintroducing the suspected drug is called:
A. Dechallenge
B. Rechallenge
C. Titration
D. Desensitization
Answer: B
37. Which finding generally provides strong evidence supporting causality?
A. Positive rechallenge
B. Lack of temporal relationship
C. Event occurring before drug exposure
D. No improvement after discontinuation
Answer: A
38. Which scale is commonly used to assess the severity of an ADR?
A. Hartwig scale
B. Apgar score
C. Glasgow Coma Scale
D. Child-Pugh score
Answer: A
39. Which scale is specifically used to assess the probability of drug-induced liver injury in some clinical settings?
A. RUCAM
B. Naranjo
C. Hartwig
D. Glasgow
Answer: A
40. A patient develops a severe ADR requiring hospitalization but no permanent disability. This would generally be considered:
A. Mild
B. Moderate
C. Severe
D. No ADR
Answer: C
D. Drug Interactions
41. A pharmacokinetic drug interaction occurs when one drug alters another drug's:
A. Receptor selectivity only
B. Absorption, distribution, metabolism, or excretion
C. Chemical name
D. Therapeutic indication
Answer: B
42. A pharmacodynamic drug interaction occurs when:
A. One drug changes the absorption of another
B. One drug alters renal elimination of another
C. Drugs produce additive, synergistic, or antagonistic effects without necessarily changing drug concentrations
D. One drug changes hepatic metabolism only
Answer: C
43. Which combination is most likely to produce additive CNS depression?
A. Diazepam + opioid
B. Omeprazole + antacid
C. Penicillin + vitamin C
D. Metformin + folic acid
Answer: A
44. A patient taking an ACE inhibitor develops hyperkalemia after starting spironolactone. This is primarily an example of:
A. Pharmacokinetic interaction
B. Pharmacodynamic interaction
C. Pharmaceutical incompatibility
D. Absorption interaction
Answer: B
45. Which drug is a strong inducer of CYP3A4 and can reduce the concentrations of many co-administered drugs?
A. Rifampin
B. Omeprazole
C. Fluconazole
D. Clarithromycin
Answer: A
46. Which of the following is a well-known CYP3A4 inhibitor?
A. Rifampin
B. Carbamazepine
C. Clarithromycin
D. Phenytoin
Answer: C
47. A patient taking simvastatin is prescribed a strong CYP3A4 inhibitor. What is the major concern?
A. Severe hypoglycemia
B. Increased risk of statin-associated myopathy and rhabdomyolysis
C. Reduced statin concentration
D. Complete loss of statin absorption
Answer: B
48. A patient taking digoxin develops toxicity after starting a medication that inhibits P-glycoprotein. The interaction most likely causes:
A. Reduced digoxin concentration
B. Increased digoxin concentration
C. Increased renal clearance of digoxin
D. Complete loss of digoxin absorption
Answer: B
49. Which food-drug interaction can increase the plasma concentrations of several CYP3A4 substrates?
A. Grapefruit juice
B. Apple juice
C. Rice water
D. Mineral water
Answer: A
50. A patient taking a serotonergic antidepressant is prescribed another strongly serotonergic medication and develops agitation, sweating, tremor, and hyperreflexia. The most likely condition is:
A. Neuroleptic malignant syndrome
B. Serotonin syndrome
C. Anticholinergic toxicity
D. Malignant hyperthermia
Answer: B
High-Yield Topic Coverage
| Area | Questions |
|---|---|
| ADR definition & classification | 1–10 |
| Risk factors & preventability | 11–15 |
| Pharmacovigilance principles | 16–20 |
| ADR reporting & surveillance | 21–25 |
| WHO, VigiBase & MedDRA | 26–30 |
| Causality assessment | 31–37 |
| ADR severity & special assessment tools | 38–40 |
| Pharmacokinetic interactions | 41–42, 45–49 |
| Pharmacodynamic interactions | 43–44 |
| Clinically important interactions | 43–50 |
| Serotonin syndrome | 50 |
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