OFFICIAL COMPREHENSIVE ANSWER KEY
INTERNAL ASSESSMENT EXAMINATION — SEPTEMBER 2024
Institution: Dharani Dhar Medical College and Hospital (DDMCH),
Keonjhar
Batch: 2022-23 MBBS Batch
Subject: Social and Preventive Medicine (SPM / Community Medicine)
Total Marks: 50 Marks (All Questions
Equal)
PART I: EPIDEMIOLOGY, RESEARCH METHODOLOGY & BIOSTATISTICS
Q.#
Question Prompt / Concept
Verified Correct Answer
1
Mac Mohan definition of Epidemiology: "The study of the
a)_____ and b)_____ of disease c)_____ in man."
a) distribution
b) determinants
c) frequency
2
Incidence is a measure of only _____ cases in a community.
new
3
Prevalence is a measure of both _____ and _____ cases in a
community.
old and new (or existing)
4
Proportion is a type of ratio where the _____ is a part of
_____.
numerator is a part of the denominator
5
Time dimension in a Rate is usually _____.
one year (or a calendar year)
6
Mid-year population of a community is the population count
on _____.
1st July of that year
7
Case-fatality represents the _____ power of a disease.
killing
8
If you want to compare the death rates of two populations
with different age-composition then _____ to be done.
standardization of rates (agestandardization)
9
A standard population is a population where the numbers in
each _____ and _____ is known.
age and sex group
10
Attack rate is a/an _____ type of rate.
incidence (modified incidence rate)
11
Two types of prevalence are _____ and _____.
point prevalence and period prevalence
12
Mathematical relationship between incidence (I), prevalence
(P) and duration of disease (D) is _____.
P=I×D
13
Epidemiological studies can be broadly classified as either
_____ or _____ studies.
observational or experimental
14
Observational studies can be broadly classified as either
_____ or _____ studies.
descriptive or analytical
DDMCH Keonjhar • 2022-23 MBBS Batch • Community Medicine (SPM)
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Q.#
Question Prompt / Concept
Verified Correct Answer
15
Analytical study designs which deal with population as unit of
study are called _____ studies.
ecological (or correlational)
16
Analytical study designs which deal with individuals as unit of
study are either _____ or _____ studies.
case-control or cohort
17
Case reference study designs are also called _____ studies.
case-control
18
An epidemiological study design named after a Roman
military unit is called _____ study.
cohort
19
Relative Risk is the ratio of _____.
incidence of disease among exposed /
incidence of disease among nonexposed
20
List any one of Hill's criteria for establishing causality:
Temporality (or Strength of Association /
Consistency)
21
Name any two diseases in man which can be eradicated:
a) Smallpox
b) Dracunculiasis (Guinea worm disease)
22
What is a primary case?
The first case of a communicable disease
introduced into the population unit being
studied.
23
What is an index case?
The first case that comes to the attention
of the investigator or epidemiologist.
24
What is a secondary case?
Cases developing from contact with
primary case within the incubation
period range.
PART II: NATIONAL PROGRAMS, IMMUNIZATION & HEALTHCARE DELIVERY
Q.#
Question Prompt / Concept
Verified Correct Answer
25
Name the GOI national program which makes available free
vaccines to all children:
Universal Immunization Programme (UIP)
26
List the vaccines in UIP which are given at birth:
a) BCG
b) OPV (Zero dose)
c) Hepatitis B (Birth dose)
27
Diseases prevented by giving Td vaccine to pregnant
mothers:
a) Tetanus (Maternal/Neonatal)
b) Diphtheria
28
List any two zoonotic diseases transmitted by milk:
a) Brucellosis
b) Bovine Tuberculosis
DDMCH Keonjhar • 2022-23 MBBS Batch • Community Medicine (SPM)
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Q.#
Question Prompt / Concept
Verified Correct Answer
29
Name the lowest level of health institution in the hierarchy of
the Indian Health care system?
Sub-Centre (SC) / Health & Wellness
Centre
30
Name the lowest level of health functionary (staff) in the
hierarchy of Indian Healthcare?
ASHA (Accredited Social Health Activist)
PART III: OCCUPATIONAL HEALTH & ERGONOMICS
Q.#
Question Prompt / Concept
Verified Correct Answer
31
The size of the respirable dusts (inhaled and retained in
lungs) ranges from _____ to _____ micron.
0.5 to 5 microns
32
Chest X-ray of a factory worker exposing to free silica for >10
years complaining of breathlessness and cough shows:
"Snow-storm" appearance (Diffuse
nodular fibrotic opacities)
33
A worker diagnosed with ASBESTOSIS is likely to suffer from
following complications except:
a) Ca Bronchus b) Mesothelioma c) Ca GIT d) Ca bladder
d) Ca bladder EXCEPT
34
The anticipated benefits of ergonomics are all except:
a) Reduced injuries b) Job satisfaction c) Good employee
turnover d) Less pre-placement examinations
d) Less pre-placement examinations
35
Farmers lung is due to long-standing exposure to _____.
mouldy hay or grain (Thermophilic
Actinomycetes)
36
A hazard is a potential source of harm, while a risk is the
likelihood of that harm occurring. (TRUE/FALSE)
TRUE
37
Occupational diseases among health care professionals can
be minimized by Pre-placement, Periodic exams and
Legislative measures. (TRUE/FALSE)
TRUE
EXCEPT
PART IV: NUTRITION, ENVIRONMENTAL HEALTH & WATER DISINFECTION
Q.#
Question Prompt / Concept
Verified Correct Answer
38
Ocular manifestation of Vitamin A deficiency is called _____.
Xerophthalmia
39
According to ICMR 2020, Reference Indian Man has a BMI of
_____ Kg/m².
20.7 kg/m²
40
Pre School, non formal education to 3-6yrs children given
under _____ program.
ICDS (Integrated Child Development
Services)
DDMCH Keonjhar • 2022-23 MBBS Batch • Community Medicine (SPM)
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Q.#
Question Prompt / Concept
Verified Correct Answer
41
The level of iodine in iodized salt at household level should
be at least _____ ppm.
15 ppm
42
Extra daily calorie intake of a pregnant woman should be
_____ kcal.
+350 kcal
43
Program for prevention and control of anemia is _____.
Anemia Mukt Bharat (AMB)
44
According to ICMR 2020, daily energy requirement of an
adult woman with sedentary activity is _____ kcal.
1660 kcal
45
Define safe and wholesome water.
Water free from pathogens, free from
harmful chemicals, pleasant to taste, and
usable for domestic purposes.
46
Recommended minimum amount of free residual chlorine in
drinking water is _____ for a contact period of _____.
0.5 mg/L (or ppm)
for a contact period of 1 hour
47
Horrock's apparatus is used to estimate _____.
the chlorine demand of water
48
Disinfecting action of chlorine on water is mainly due to
_____.
Hypochlorous acid (HOCl)
49
Level of hardness for drinking water is _____.
200 mg/L (Indian Acceptable Standard
Limit)
50
The vital layer in a slow sand filter is _____.
Schmutzdecke (zoogleal / biological
sticky layer)
DDMCH Keonjhar • 2022-23 MBBS Batch • Community Medicine (SPM)
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