#Practice Set II: MBBS II-Community Medicine
#Section “A” – MCQs (Set II)
(Tick the single best answer)
30 Questions × 1 Mark = 30 Marks
#1. The branch of epidemiology that studies distribution and determinants of health events is:
A. Clinical epidemiology
B. Descriptive epidemiology
C. Experimental epidemiology
D. Analytical epidemiology
#2. The level of prevention aimed at preventing emergence of risk factors is:
A. Primordial prevention
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention
#3. The most appropriate indicator of health status of a community is:
A. Crude birth rate
B. Infant mortality rate
C. Prevalence rate
D. Literacy rate
#4. The usual incubation period of measles is:
A. 1–3 days
B. 4–6 days
C. 7–14 days
D. 21–28 days
#5. Attack rate is best used during:
A. Cohort study
B. Outbreak investigation
C. Case-control study
D. Cross-sectional survey
#6. The most common reservoir of Nipah virus is:
A. Cattle
B. Fruit bats
C. Dogs
D. Rodents
#7. The gold standard for diagnosis in epidemiological studies is:
A. Screening test
B. Clinical examination
C. Laboratory confirmation
D. Self-report
#8. Herd immunity is directly related to:
A. Case fatality rate
B. Vaccine efficacy
C. Proportion of immune persons
D. Duration of illness
#9. Safe residual chlorine in drinking water at consumer end should be:
A. 0.1 mg/L
B. 0.2 mg/L
C. 0.5 mg/L
D. 1.0 mg/L
#10. Slow sand filter works mainly by:
A. Chemical precipitation
B. Mechanical screening only
C. Biological layer (schmutzdecke)
D. Chlorination
#11. The most sensitive indicator of air pollution effects is:
A. COPD
B. Lung cancer
C. Eye irritation
D. Peak expiratory flow rate
#12. Incidence rate measures:
A. Total cases
B. Old cases only
C. New cases over time
D. Deaths only
#13. The recommended daily energy requirement for an average adult male (moderate work) is approximately:
A. 1600 kcal
B. 2000 kcal
C. 2400 kcal
D. 3200 kcal
#14. Body Mass Index (BMI) is calculated as:
A. Weight/height
B. Height/weight²
C. Weight/height²
D. Weight²/height
#15. The study design that establishes temporal relationship best is:
A. Cross-sectional
B. Case-control
C. Cohort
D. Ecological
#16. The most appropriate measure of central tendency for skewed data is:
A. Mean
B. Mode
C. Median
D. Range
#17. Iceberg phenomenon of disease implies:
A. Only clinical cases exist
B. Only carriers exist
C. Hidden subclinical cases exceed clinical cases
D. Disease affects only children
#18. The method used for rapid assessment of nutritional status in the field is:
A. Skinfold thickness
B. Dietary recall
C. Mid-upper arm circumference
D. BMI
#19. The recommended duration of exclusive breastfeeding is:
A. 3 months
B. 4 months
C. 6 months
D. 9 months
#20. Case fatality rate reflects:
A. Risk of acquiring disease
B. Severity of disease
C. Duration of disease
D. Incidence of disease
#21. The most effective method of health education at community level is:
A. Lecture
B. Poster
C. Group discussion
D. Pamphlet
#22. Disability limitation is a component of:
A. Primordial prevention
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention
#23. A disease transmitted through contaminated fingers is classified as:
A. Water-borne
B. Water-washed
C. Water-based
D. Vector-borne
#24. The demographic indicator reflecting average number of children born to a woman is:
A. Crude birth rate
B. General fertility rate
C. Total fertility rate
D. Net reproduction rate
#25. Vaccine efficacy is measured by:
A. Odds ratio
B. Relative risk reduction
C. Prevalence ratio
D. Attributable risk
#26. The first step in outbreak investigation is:
A. Laboratory confirmation
B. Data analysis
C. Verify diagnosis
D. Implement control measures
#27. Drug of choice for uncomplicated malaria due to P. vivax is:
A. Chloroquine
B. Artesunate
C. Doxycycline
D. Ciprofloxacin
#28. The minimum number of contacts required for effective communication is:
A. One-way
B. Two-way
C. Three-way
D. Mass media only
#29. Zinc supplementation in diarrhea mainly helps by:
A. Killing bacteria
B. Increasing appetite only
C. Reducing duration and severity
D. Preventing dehydration directly
#30. Life expectancy at birth is an indicator of:
A. Morbidity
B. Disability
C. Mortality
D. Fertility