Community Medicine MCQ

MBBS THIRD PROFESSIONAL EXAMINATION 2007 Community Medicine (MCQs)

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Total No. of MCQs 65 Marks 65 Time 1 hour 5 minutes CONCEPTS OF HEALTH AND DISEASE…. 1. Restriction of activities of a contact, who has been

exposed to a case of communicable disease for maximum incubation period, is termed as: a. Elimination b. Quarantine c. Surveillance d. Control e. Isolation Key: b Weighting: 1 Mark Reference: Park’s Text Book Row 1 of table of specification

2. The required temperature for sterilization against spores in Hot-air oven is:

a. 120-1400C for one hour b. 140-1600C for one hour c. 160-1800C for one hour d. 180-2000C for one hour e. 200-2400C for one hour Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 1 of table of specification

3. “Dettol” is a commonly used antiseptic agent in the

community. Its chemical name is: a. Hexachlorophane b. Chloroxylenol c. Chlorhexidine d. Cetrimide e. Cresol Key: b Weighting: 1 Mark Reference: Park’s Text Book Row 1 of table of specification


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INTRODUCTION TO PUBLIC HEALTH AND HEALTH SYSTEMS….. 4. Our rural masses are facing multiple health problems. The

best approach to deal with their problems is to provide: a. Basic health services b. Health education c. Safe water supply and sanitation d. Free medical care e. Primary health care. Key: e Weighting: 1 Mark Reference: Park’s Text Book Row 2 of table of specification

5. Which one of the following is not included in the elements

of Primary Health Care? a. Immunization services b. Family planning services c. Specialized services d. Health education regarding water and sanitation e. Provision of essential drugs

Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 2 of table of specification

6. The main headquarters of WHO are present in which one

of the following countries? a. Switzerland b. France c. America d. England e. Egypt

Key: a Weighting: 1 Mark Reference: Park’s Text Book Row 2 of table of specification


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GENERAL EPIDEMIOLOGY 7. When a new treatment is developed that delays death but

does not produce recovery from a chronic disease, which of the following will occur? a. Prevalence of the disease will decrease b. Incidence of the disease will increase c. Prevalence of the disease will increase d. Incidence of the disease will decrease e. Incidence & prevalence of the disease will decrease

Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 3(a) of table of specification

8. Which one of the following gives the strength of

association between the cause and the disease? a. Prevalence rate. b. Case fatality rate. c. Adjusted rate. d. Incidence rate. e. Disease index.

Key: d Weighting: 1 Mark Reference:Park’s Text Book Row 3(c) of table of specification

9. Which one of the following is not included in analytical

epidemiological studies? a. Historical cohort studies b. Cohort studies c. Case control d. Case report e. Experimental studies

Key: d Weighting: 1 Mark Reference: Park’s Text Book Row 3(a) of table of specification


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10. Killing power of a disease is best expressed by: a. Attack Rate. b. Secondary Attack rate. c. Case fatality rate. d. Survival index. e. Proportionate mortality rate.

Key: c Weighting: 1 Mark Reference:Park’s Text Book Row 3(a) of table of specification

11. Difference in incidence rate of disease between exposed group and non exposed group is:

a. Attributable fraction b. Relative risk c. Attributable risk d. Prevalence rate e. Odds ratio

Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 3(a) of table of specification

CONTROL AND PREVENTION OF COMMUNICABLE DISEASES 12. Koplik's spots are the diagnostic sign of one of the

following diseases: a. Rubella b. Whooping cough c. Measles d. Meningitis e. Mumps

Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 3(b) of table of specification


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13. The best strategy recommended by WHO for the control of pulmonary Tuberculosis is:

a. BCG vaccination at mass level b. Chemoprophylaxis with INH c. Early case detection and prompt treatment d. Proper disposal of sputum e. Awareness


14. Which one of the following diseases does not spread by

infected droplets? a. Chicken pox b. Measles c. Poliomyelitis d. Mumps e. Rubella


15. Which one of the following diseases will not have a

human healthy carrier? a. Cholera b. Diphtheria c. Salmonellosis d. Hydatidosis e. HIV

Key: d Weighting: 1 Mark Reference: Park’s Text Book Row 3(b) of table of specification


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CONTROL AND PREVENTION OF NON COMMUNICABLE DISEASES 16. Which one of the following factors will lead to hypertension?

a. High Protein diet b. High sodium intake c. Body mass index of 25 d. Hypervitaminosis A e. High HDL

Key: b Weighting: 1 Mark Reference: Park’s Text Book Row 3(c) of table of specification

17. Which one of the following is not a risk factor for coronary

heart disease? a. Oral contraceptives b. Alcohol abuse c. High fibre diet d. Type A personality e. Diabetes

Key: c Weighting: 1 Mark Reference: Park’s Text Book Row 3(c) of table of specification

IMMUNOLOGY 18. The number of Tetanus Toxoid doses for a woman of

childbearing age is? a. One b. Two c. Three d. Four e. Five

Key: e Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 3(d) of table of specification


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19. Which one of the following is a cell derived vaccine?

a. Measles b. BCG c. OPV d. Hepatitis B e. Mumps

Key: d Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 3(d) of table of specification

20. Which one of the following types of immunization is

available against Rabies? a. Live attenuated vaccine b. Killed vaccines c. Cell derived vaccine d. Cell wall vaccine e. Toxoids.

Key: b Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 3(d) of table of specif ication

21. Both active and specific passive types of immunization are

available for which one of the following? a. Tetanus b. Meningitis c. Measles d. Mumps e. Tuberculosis

Key: a Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 3(d) of table of specification


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22. A student has come to Pakistan from Kenya, he must have

a valid certificate of vaccination against: a. TB. b. Poliomyelitis c. Mumps d. Yellow fever e. Hepatitis B.

Key: d Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 3(d) of table of specification

Biostatistics 23. Which of the following data is not measurable?

a. Nominal b. Ordinal c. Interval d. Continuous e. Discrete


24. Which of the following diagram represents a homogeneous data?

a. Multi modal curve b. Normal distribution curve c. Right skewed curve d. Left skewed curve e. Bimodal curve

Key: b Weighting: 1 Mark Reference: Park’s Text Book Row 4 of table of specification


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25. Which one of the following is not a measure of central

tendency? a. Mean b. Median c. Mean deviation d. Geometric mean e. Mode


26. Shape of normal distribution curve is based mainly on:

a. Mean and sample size b. Mean and standard deviation c. Range and sample size d. Range and standard deviation e. Mean and Range


DEMOGRAPHY 27. The number of deaths in people above 65 years expressed

as percentage of total deaths of all age groups is known as: a. Expectancy of life at 65 years. b. Proportional mortality rate. c. Crude death rate. d. Specific death rate. e. Adjusted death rate.



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28. Which one of the following is the most reliable indicator of

fertility in a country? a. Growth rate b. Crude birth rate c. Natural increase rate d. Total fertility rate e. General fertility rate

Key: d Weighting: 1 Mark Reference: Park’s Text Book Row 5 of table of specification

29. The number of daughters a new born girl will bear during

her life time assuming fixed age specific fertility and mortality rate, refers to which one of the following? a. Crude birth rate b. Gross reproduction rate c. Net reproduction rate d. Total fertility rate e. General fertility rate


NUTRITION 30. Vitamin A deficiency state is characterized by one of the

following: a. Bitot’s spots b. Anemia. c. Diarrhea. d. Bone deformities. e. Dermatitis.

Key: a Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 6 of table of specification


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31. Which one of the following is a meat borne disease?

a. Bacillus Cereus infection b. Taeniasis. c. Ascariasis. d. Shigellosis. e. Clostridium Botulinum infection.

Key: b Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 6 of table of specification

32. One important clinical sign of Kwashiorkor type of

malnutrition is: a. Monkey face b. Oedema c. Obvious muscle wasting d. Obvious loss of subcutaneous fat e. Usually good appetite


33. Which one of the following is not a feature of Marasmus?

a. Muscle wasting. b. Low weight for height c. Hypo pigmented hair d. Severe subcutaneous fat loss e. Irritability

Key: c Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 6 of table of specification


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34. Which one of the following is not true regarding Vitamin

A? a. It is a water soluble Vitamin b. Its deficiency causes xeropthalmia c. Animals foods are sources of preformed Vitamin A (Retinol) d. Liver stores Vitamin A in the form of retinol palmitate e. Its deficiency also causes follicular hyperkeratosis.


MCH & FAMILY PLANNING 35. Which one of the following is not included in the four

pillars of safe mother hood? a. Family planning b. Antenatal care c. Clean delivery d. Essential obstetric care e. Female literacy

Key: e Weighting: 1 Mark Reference: Park’s Text Book Row 7 of table of specification

36. The average weight gain for a pregnant woman with BMI

20 – 25 should be: a. 4 to 8kg b. 8 to 12kg c. 12 to 16kg d. 16 to 20 kg e. 20 to 24kg



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37. Regarding breast feeding which one of the following is

true? a. Feeding of newborn should commence on the second day

after birth b. Colostrum contains antibodies c. 5 breast feeds one after every 4 hrs should be given to early

neonates. d. Breast feeding is contraindicated in women with tuberculosis e. If infant cannot suck, feeding should be discontinued


38. Which one of the following gestational infections will

result in congenital anomaly? a. Chicken Pox b. Candidiasis c. Typhoid d. Pneumonia e. Cholera


39. Which one of the following is not a mechanical method of

contraception? a. Insertion of Copper T b. Insertion of Lippes Loop c. Use of diaphragm d. Contraceptive implants e. Condoms



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40. A Post coital contraception is recommended within: a. 06 hours of unprotected- intercourse. b. 48 hours of unprotected- intercourse. c. 72 hours of unprotected- intercourse. d. Two days of missed period. e. Two weeks of missed period.


SCHOOL HEALTH 41. Which of the following statements is true for school

Health team? a. It consists of one male doctor & one female doctor and two

nurses. b. It serves up to 5000 school children. c. Every school, small or large, should have its own school

health team linked with BHUs. d. It is responsible for curative health care. e. School health records are a reliable source of data in Pakistan.

Key: b Weighting: 1 Mark Reference:Park’s Text Book Row 8 of table of specification

42. Which of the following arrangements regarding desks & chairs is recommended for school children?

a. Minus type b. Plus type c. Benches to accommodate a large number of children in a

small space d. Desks with revolving seats e. Desks with recliner chairs



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43. The Routine Medical Inspection of school children during

school career should at least be: a. Once every year b. Four times in the total schooling period c. On the request of teachers d. In the disease out-breaks. e. Once in the total schooling period

Key: b Weighting: 1 Mark Reference:Park’s Text Book Row 8 of table of specification

ENVIRONMENT 44. The presence of nitrates in water indicates:

a. Temporary hardness of water b. Permanent hardness of water c. Fresh faecal pollution d. Past faecal pollution e. Parasitic contamination of water


45. Mottling of teeth is a nutrition related condition which results from:

a. Deficiency of Fluorine in drinking water b. Deficiency of Chlorides in water c. Excess of Fluorine in drinking water d. Excess of Nitrites in water. e. Malabsorption.



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46. The sloughed off layer in the trickling filter during the treatment of sewage in modern plants is known as: a. Humus b. Wet manure c. Scum d. Sullage e. Sludge


47. House waste-water which does not contain human

excreta is known as: a. Humus b. Sewage c. Sludge d. Sullage e. Scum


48. Which one of the following does not refer to vitiation of

air? a. Decrease in air movements b. Increased concentration of carbon dioxide c. Decrease in relative humidity d. Increase in temperature e. Increase in bacterial count



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49. Which one of the following is correct regarding daily upper limit of noise without substantial damage to hearing? a. 50 db b. 70 db c. 75 db d. 85 db e. 100 db


OCCUPATIONAL HEALTH 50. Which one of the following is included in pneumoconiosis?

a. Anthracosis b. Sarcoidosis c. Psittacosis d. Aspergillosis e. Salmonellosis


51. Which one of the following is not an example of organic dust?

a. Cane fiber b. Tobacco c. Cotton dust d. Grain dust e. Asbestos

Key: e Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 10 of table of specification


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52. Foundry workers may suffer from one of the following

diseases as a result of occupational exposure: a. Silicosis b. Asbestosis c. Stomach cancer d. Lung cancer e. Anthracosis

Key: a

Weighting: 1 Mark Reference: PARK’S TEXT BOOK Row 10 of table of specification

53. Which one of the following is not true regarding Pneumoconiosis?

a. Byssinosis is due to inhalation of cotton dust b. Anthracosis is due to inhalation of anthrax spores c. Baggassosis is an occupational hazard of workers in paper

mills. d. Asbestosis predisposes to pleural mesothelioma. e. Pneumoconiosis is irreversible


ENTOMOLOGY 54. Which one of the following statements is not true regarding Lice?

a. Lice belong to phylum arthropoda. b. It undergoes incomplete metamorphosis. c. Pediculosis is a viral disease transmitted by the bite of a body

louse. d. Relapsing fever occurs when an infected louse is crushed on

the skin. e. Dusting powder containing 10% DDT is effective for

Pediculosis.



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55. Which one of the following insecticides is the least toxic organo-chlorine compound for human beings? a. DDT b. HCH c. Dieldrin d. Aldrin e. Chlordane


PARASITOLOGY 56. Asexual cycle of malarial parasite ends with the

production of which one of the following to propagate the disease? a. Sporozoties b. Merozoites c. Schizonts d. Gametocytes e. Oocytes


57. The best method recommended by WHO for malaria

control in endemic areas is: a. The use of Pyrethrum impregnated bed nets b. Regular use of Chloroquine c. Genetic Control of Mosquitoes d. Vaccination e. Passive immunity by anti-sera



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SNAKE BITE 58. A snakebite victim was brought to a health facility after 6

hours of bite. There was a bloody discharge at the site of bite. There were ecchymosis & serum filled blebs. The most likely snake involved is: a. Viper b. Cobra c. Krait d. Sea snake e. Non poisonous snake

Key: a Weighting: 1 Mark Reference: Ilyas Ansari Text Book Row 13 of table of specification

MENTAL HEALTH 59. Mental retardation is seen in which of the following

childhood conditions? a. Trisomy 21 b. Marasmus. c. Kwashiorkor d. Congenital HBV infection e. Juvenile Diabetes.

Key: a Weighting: 1 Mark Reference: Illyas Ansari Text Book Row 14 of table of specification

DRUG ADDICTION 60. The most important factor which makes the smoking

cessation program successful is: a. The desire of the smoker to quit b. Availability of replacement therapy c. A well planned program d. The advice by a competent doctor e. Follow up program

Key: a

Weighting: 1 Mark Reference: Park’s Text Book Row 15 of table of specification


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61. Which one is incorrect about tobacco smoking? a. The babies born smoking to mothers, who smoke, weigh on

average 200, less at birth than those of non smokers. b. It is responsible for about 3 million deaths/year in the world c. In developed world per capita consumption of tobacco is

increasing d. Dose-response relationship is seen in cigarette smoking and

lung cancer e. Withdrawal symptoms include irritability, sleep problems and

tremors.

Key: c


62. Self administration of a drug for non medical reasons in

quantities and frequencies which may impair an individual’s ability to function effectively and which may result in social, physical or emotional harm is best named as: a. Drug dependence b. Drug tolerance c. Drug abuse d. Self medication. e. Drug therapy


63. Marijuana is derived from which one of the following

plants? a. Cannabis b. Morning Glory c. Coca bush d. Mushrooms e. Cactus



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HEALTH EDUCATION 64. In a health education programme, if a group of 10 people

are speaking on a topic of common interest, it is called a: a. Workshop b. Panel discussion c. Group discussion d. Symposium e. Demonstrations


DISASTERS 65. In which of the following disasters, injuries usually

exceed death? a. Earth quakes b. Landslide c. Avalanches d. Floods e. Explosions Key: a


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Community Medicine MCQ