AIIMS May 2011- Community Medicine

43. A 30 yrs old female has sputum positive TB. Her child is 3 years old. What is the recommended chemoprophylaxis:

a. INH 3 mg/kg for 3 months
b. INH 5 mg/kg for 3 months
c. INH 3 mg/kg for 6 months
d. INH 5 mg/kg for 6 months


44. Late expanding stage of population in India is due to:

a. Birth rate stationary, death rate continues to fall.
b. Death rate declines more than birth rate
c. Birth rate declines, death rate same.
d. Birth rate is less than death rate


45. Which of the following statments about vaccines is false?

a. Thiomersal is a preservative in DPT.
b. Magnesium chloride is a stabilizer used in OPV.
c. Kanamycin is preservative in measles.
d. Neomycin is preservative in BCG.


46. Following are larval control measures except:

a. DDT
b. Paris green
c. Gambusia
d. Intermittent irrigation


47. The following statement about DDT is false:

a. Pyrethrum has synergestic action
b. It is a contact poison
c. Immediately kills the prey
d. Residual effect lasts for 18 months.


48. Incineration is not done for:

a. Cytotoxic drugs
b. Cotton contaminated with blood
c. Waste sharps
d. Human tissue.


49. Which of the following statements is true about BCG:

a. Distilled water is used as a diluent for BCG.
B. The site of injection should be cleaned thoroughly with spirit.
c. Mantoux test becomes positive after 48 hours of vaccination.
d. WHO recommends Danish 1331 strain for vaccine production.


50. Fish is deficient in which of the following nutrients:

a. Iodine
b. Vitamin A
c. Iron
d. Phosphorus


51. True about cluster sampling are all except:

a. Sample size is same as that of simple random sampling.
b. it is two stage sampling
c. It is cheaper than other methods.
d. It has the disadvantage of high sampling error.


52. Not true about breast milk is:

a. Maximum output is seen at 12 months.
b. Coefficient of iron absorption is 70%.
c. Calcium utilization from breast milk is more than cow's milk.
d. Breast milk protein is reference protein.


53. About randomized controlled trial, all are true except:

a. Baseline characteristics are comparable.
b. Bias can be eliminated by double blinding
c. Sample size depends on the type of study.
d. Dropouts are excluded from the study.


54. Incidence can be calculated by:

a. Prospective study.
b. Retrospective study.
c. Case control study.
d. Cross sectional study.


55. All of the following statments about purificaiton of water are true except:

a. Presence of clostridial spores indicate recent contamination of water.
b. Coliforms must be detectable in any 100 ml sample of drinking water.
c. Sodium thiosulphate is used to neutralize chlorine.
d. Coliforms may be detected by multiple tube method and indole production.


56. In India, most common cause for maternal mortality is :

a. Anemia
b. Hemorrhage
c. Abortion
d. Obstructed labour.


57. Which of the following statement is true about net protein utilization?

a. It is the ratio of energy from protein to total energy in diet.
b. It is the ratio of total nitrogen retained by total nitrogen intake, multiplied by 100.
c. It is the amount of one amino acid per gram of a protein divided by the amount of same amino acid per gram of egg protein
d. If the NPU is high, the amount of protein requirement in diet is high.