1. Dentist act was passed in1942194519501956Question 1 of 20 2. Anti-calculus agent in toothpaste isPyrophosphateFluorideCocoamidopropylLauryl sulphateQuestion 2 of 20 3. In a study in UK, an association was found between sale of an antiarrhythmic drug and an increase in deaths due to asthma. This is an example of:Cohort studyExperimental studyCase reference studyEcological studyQuestion 3 of 20 4. The purpose of double blinding in clinical trials is toAchieve comparability between study and controlAvoid subject biasAvoid observer biasAvoid observer and subject biasQuestion 4 of 20 5. Infected waste is disposed in which containerYellowRedBlackBlueQuestion 5 of 20 6. An active carious lesion can be stopped from progression by application of which of the following:APFNaFSnFSilver diamine fluorideQuestion 6 of 20 7. What is the percentage of chlorohexidine when used as a handrub:0.0050.010.00120.002Question 7 of 20 8. Which of these is a parametric testMann-Whitney U TestChi-Square TestWilcoxon signed rank TestT-TestQuestion 8 of 20 9. An investigator wants to study the association between maternal intake of iron supplements (Yes/ No) and birth weights (in gms) of newborn babies. He collects relevant data from 100 pregnant women and their newborns. What statistical test of hypothesis would you advise for the investigator in this situation?Analysis of VariancePaired t-testChi-Square testUnpaired or independent t-testQuestion 9 of 20 10. Using neem stick is an example ofInter-Sectoral CoordinationEquitable DistributionCommunity ParticipationAppropriate TechnologyQuestion 10 of 20 11. Carry over effect is seen inCase control studyCross over studyCohort studyConcurrent parallel trialQuestion 11 of 20 12. In a positively skewed population distribution with a long tail, which of the following is used as measure of central tendencyModeStandard deviationMeanMedianQuestion 12 of 20 13. The pattern of change of disease trends of mortality and morbidity where the pandemics of infection. are replaced by degenerative and manmade disorders as the main cause of morbidity and mortality is known as:Reversal of transitionDemographic transitionEpidemiological transitionParadoxical transitionQuestion 13 of 20 14. Prevalence of disease will decrease in all of the following scenarios, exceptLack of Advanced Diagnostic Services at CentresIf case-fatality rate is highAdvanced Treatment Modalities Are AvailableImmigration of CasesQuestion 14 of 20 15. Application of fluoride varnish after luting a crown has which of the following beneficial action:Removes fluorides from enamelAllows dissolution of marginal cementReduces the peripheral sealProvides desensitizing actionQuestion 15 of 20 16. In a study, significant relation is found between obesity and caries. However, the data for the study was collected only from food manufacturers and hospitals. This type of study design is calledCross sectional studyPsephological studyEcological studyRandomized trialQuestion 16 of 20 17. Concentration of fluoride in salt250ppm9Oppm225ppm275ppmQuestion 17 of 20 18. In epidemiology, a sample is:Small group of people representing the populationRepresents each individualRepresents a small group of people of low socio-economic statusA group of people in a small areaQuestion 18 of 20 19. Vectors may transmit infection by all of the following methods, ExceptRubbing of infected faecesContamination with body fluidsRegurgitationIngestionQuestion 19 of 20 20. Objective of calibrating examiner before survey is toEnsure uniform interpretation, understanding and application of diagnostic criteriaMeasure consistently at different times and under a variety of conditionsReduce intra- and inter examiner reliabilityAll of the aboveQuestion 20 of 20 Loading...