Reg. no.: .....................
III Professional MBBS Part I Degree Supplementary (SAY) Examinations May 2025
Community Medicine Paper I
(2019 Scheme)
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Time: 3 HoursTotal Marks: 100
Answer all questions to the point neatly and legibly ? Do not leave any blank pages between answers
Indicate the question number correctly for the answer in the margin space
Answer all parts of a single question together ? Leave sufficient space between answers
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Draw table/diagrams/flow charts wherever necessary1. Multiple Choice Questions
(20x1=20)
The MCQ questions (Q.No. i to Q.No. xx) shall be written in the space provided for answering MCQ
questions at page No. 51 of the answer book (the inner portion of the back cover page (PART III)).
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Responses for MCQs marked in any other part/page of the answer book will not be valuedQuestion numbers i-v are single response questions
i. Water pump in broad street in London was identified as the source of cholera by
a) William Farr
b) John Snow
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c) John Gruntd) Hippocrates
ii. An example of a live attenuated vaccine is
a) Hepatitis B
b) Pertussis
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c) Measlesd) Diphtheria
iii. Fish fat is a dietary source of
a) Vitamin
E
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b) VitaminK
c) Vitamin
D
d) Vitamin B
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1iv. The duration of electricity supply required in a day to keep the vaccines effective in an ice-lines refrigerator
(ILR) i
s
a) 4 hour
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sb) 10 hour
s
c) 8 hour
s
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d) 2 hoursv. Interruption of transmission of disease
a) Eliminatio
n
b) Contro
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lc) Eradicatio
n
d) Exterminatio
n
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Question numbers vi-x are case scenario-based questions100 children with bronchopneumonia were taken and, 100 children with the same age and sex who did not
have bronchopneumonia were taken and history of vitamin A rich food intake was assessed.
vi. The study design is
a) Randomised control trial
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b) Cohortc) Case control
d) Case-cohort
vii. The bias in case control is
a) Confounder bias
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b) Berke Sonian bias c) Selection biasd) All of the above
viii. Matching help to prevent
a) Confounder bias
b) Selection bias
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c) Berke Sonian biasd) Recall bias
ix. The measure of risk in case control study is
a) Odds ratio
b) Relative risk
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c) Attributable riskd) Hazard ratio
x. An odds ratio of one indicates
a) Protective effect
c) No association
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b) High riskd) No inference can be made
Question numbers xi-xv consist of two statements-Assertion (A) and Reason (R). Answer these
questions by selecting the appropriate options given below.
xi. Assertion: Case fatality rate is a measure of virulence of the disease
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Reason: Rabies has low case fatality ratea) Both A and R are true and R is the correct explanation of A
c) A is true, R is false
b) Both A and R are true and R is not the correct explanation of A
d) A is false, R is true
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xii. Assertion: Predictive value of a screening test depends on the prevalence of the diseaseReason: Sensitivity and specificity are the measures of validity of a screening test
a) Both A and R are true and R is the correct explanation of A
c) A is true, R is false
b) Both A and R are true and R is not the correct explanation of A
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d) A is false, R is truexiii. Assertion: Waste sharps are disposed in puncture proof, leak proof and tamper proof containers
Reason: Waste sharps are a health hazard to health care workers
a) Both A and R are true and R is the correct explanation of A
c) A is true, R is false
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b) Both A and R are true and R is not the correct explanation of Ad) A is false, R is true
xiv. Assertion: In a simple random sampling technique, every member of the population has an unequal
chance of being selected in the sample
Reason: A list of members in the sampling frame is necessary for selection of the sample
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a) Both A and R are true and R is the correct explanation of Ac) A is true, R is false
b) Both A and R are true and R is not the correct explanation of A
d) A is false, R is true
xv. Assertion: The active search for disease in apparently healthy people is screening
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Reason: The benefit of screening is that early diagnosis is possiblea) Both A and R are true and R is the correct explanation of A
c) A is true, R is false
b) Both A and R are true and R is not the correct explanation of A
d) A is false, R is true
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(PTO)Question numbers xvi-xx are multiple response type questions read the statements and mark the
answers appropriately
xvi. Prevalance as a measure of disease frequency is influenced by
1) Duration of the disease
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2) Incidence of the disease3) Fatality of the disease
4) Variation in the population size
a) 1, 3, 4 are correct
b) 1, 2, 4 are correct
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c) 1, 2, 3, 4 are correctd) 1, 2 are correct
xvii. The advantages of an occupational cohort subgroups in a cohort study all EXCEPT
1) Easy access to study participants
2) Easy follow-up of participants
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3) Participants are cooperative4) Selecting a comparison group is difficult
a) 1, 3, 4 are correct
b) 1, 2, 3 are correct
c) 1, 2, are correct
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d) 1, 2, 3, 4 are correctxviii. The types of formulations of essential medicine are
1) Immediate release tablets
2) Enteric coated tablets
3) Hard and soft gelatin capsules
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4) Oral liquids/injectable/Topical formsa) 1, 3, 4 are correct
b) 1, 2, 3 are correct
c) 1, 2 are correct
d) 1, 2, 3, 4 are correct
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xix. Residual chlorine after disinfection of water is tested by1) Orthotolidine Arsenic test
2) Orthotolidine test
3) Methylene blue test
4) Chlorotex test
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a) 1, 3, 4 are correctb) 1, 2, 3 are correct
c) 1 and 2 are correct
d) 1, 2, 3, 4 are correct
xx. The relation in size between two random quantities is expressed as
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1) Doctor population ratio2) Sex ratio at birth
3) Child sex ratio
4) Doctor nurse ratio
a) 1, 3, 4 are correct
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b) 1, 2, 3 are correctc) 1, 2 are correct
d) 1, 2, 3, 4 are correct
Essays:
(2x10=20)
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2. Three children in a village reported to the medical officer with history of vomiting and fever since two days.They were 2 years, 5 years and 7 years old
.
a) What are the differential diagnosis of the cases
.
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b) How will you manage the cases.
c) List the steps of investigating this epidemic.
(2+5+3)
3. Define health education. Discuss the principles of health education. List the barriers to communication.
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(2+5+3)
Short Essays:
(6x6=36
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)4. Define biomedical waste. List the sources of biomedical waste. Discuss the role of personal protective
devices whil
e handling biomedical waste
.
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5. Classify epidemiological study designs. Describe the advantages of randomization in an experimentalstudy
.
6. Discuss the Vitamin A prophylaxis program. List the sources of vitamin A in an Indian diet
.
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7. Genetic counselling.
8.
List the stages in demographic cycle. Discuss birth and death registration in India.
9. Epidemic dropsy
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.Short Answers:
(6x4=24
)
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10. What is fiduciary duty and how is it applicable to doctors. What are the penalties a doctor can be given incase of breach of fiduciary duty. State with an example
.
11. Principles of Primary Health Care
.
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12. Sickness benefit in the Employees State Insurance Act.
13. Trans fatty acid
s.
14. Measure of central tendency
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.15. Hazards prevention and control of air pollution
.
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