49 - AIIMS community medicine mcqs or social and preventive medicine mcqs ( spm or psm ) from all previous years AIIMS papers with answers - part 39

196q: chlorine demand is measured by ?

a. horrock’s apparatus
b. chlorimeter
c. double pot
d. berkfeld filter

answer a . horrock’s apparatus .

197q: in a study in UK they found an association between sale of asthmatic drugs and an increase in deaths due to asthma from 1979 to 1990 . this is an example of ?

a. ecological study
b. cohort study
c. case reference study
d. experimental study

answer a . ecological study .

198q: a newly found technique for estimating Hb found the values as 9.4, 9.0, 9.3, 12.4, 9.2, ………. 10.3 and 12.2 . by calorimetry the Hb was estimated to be 10.2 gram percent . so the new test has ?

a. low validity and high reliability
b. high validity and high reliability
c. low validity and low reliability
d. high validity and low reliability

answer c . low validity and low reliability .

199q: problem village is all except ?

a. distance of safe water is greater than 1.6 kilometer
b. depth is more than 16 metres
c. waer is polluted with inorganic substance
d. water infested with guinea worm

answer d . a problem village is defined as one where no source of safe water is available within a distance of 1.6 km or where water is available at a depth of more than 15 metres or where water source has excess salinity, iron , fluorides and other toxic elements or where water is exposed to the risk of cholera .d. water bottle heart

200q: best method used to find the difference between a newly found test and gold standard test ?

a. correlation study
b. regression study
c. bland and altman analysis
d. none

answer c . bland and altman analysis .

47 - AIIMS community medicine mcqs or social and preventive medicine mcqs ( spm or psm ) from all previous years AIIMS papers with answers - part 37

186q: chlorine demand is measured by ?

a. horrock’s apparatus
b. colorimeter
c. double pot
d. berkfeld filter

answer a . horrock’s apparatus .

187q: which of the following is not transmitted by lice ?

a. Q fever
b. Trench fever
c. Relapsing fever
d. Epidemic typhus

answer a . Q fever is caused by soft ticks .

188q: which of the following statements about lepromin test is false ?

a. it is negative in most children in first 6 months of life
b. it is a diagnostic test
c. it is an important aid to classify the type of leprosy
d. BCG vaccine may convert lepra reaction from negative to positive

answer b is false because it is not a diagnostic test .

189q: true about Accredited Social Health Activist ( ASHA ) is ?

a. mental health worker
b. deployed per thousand people
c. to replace anganwadi worker in ICDS programme
d. minimum need program worker

answer b . deployed per thousand people .

190q: true about point source epidemic are all except ?

a. the curve has rapid rise and slow decline
b. all cases occur in one incubation period
c. one single peak only
d. no secondary curves

answer a is false becoz the curve has rapid rise and rapid decline .