1. Role of humectant in toothpastes:Anti-bacterialAbrasiveRetain moistureTasteQuestion 1 of 20 2. All of the following are applications of knowing the incubation period of a disease exceptTo determine the period of isolationTo prevent infection amongst contacts of the infected personTo differentiate among secondary cases and co-primary casesTo determine the period of quarantineQuestion 2 of 20 3. In statistics, sample represents:Group of samplesRepresent each memberSubset of sampleArithmetic unit used like Kg, gmQuestion 3 of 20 4. A pregnant lady uses fluoridated drinking water. All of the following are true regarding exposure of the fetus to fluoride except:Placenta acts as a regulator and reduces the concentration of fluoride reaching the fetusPlacenta acts as a barrier to fluoride ionsPlacenta has no role in fluoride regulation to fetusPlacenta acts as a regulator and increases the concentration of fluoride reaching the fetusQuestion 4 of 20 5. Change in event with respect to time is best depicted byLine diagramBar diagramDot diagramPie chartQuestion 5 of 20 6. Disposal method of outdated cytotoxic drugs is:Destruction and dumping in a secure landfillPreserve for 10 years and landfillDisposal in municipal wasteAutoclaveQuestion 6 of 20 7. Fourth generation pit and fissure sealants are:Fluoride releasingColored sealantsUV light curedHigh viscosity sealantsQuestion 7 of 20 8. Best method to compare new test and gold standard testRegressive studyKolmogorov-Smimov testCorrelation studyBland and Altman analysisQuestion 8 of 20 9. If prevalence of disease is high in population, requiresMedium screeningHigh screeningLow level screeningNo screeningQuestion 9 of 20 10. When chlorate in water starts to disappear and free chlorine starts to appear, it is calledFlow pointEnd pointScreen pointBreak pointQuestion 10 of 20 11. Age was found to be a factor affecting the relation of diabetes mellitus and periodonticsInformation BiasSelection BiasSampling BiasConfounding BiasQuestion 11 of 20 12. Chikungunya is transmitted byAnophelesAedesMansonoidesCulexQuestion 12 of 20 13. Ability of the test to correctly identify those who have disease:AccuracySpecificityReliabilitySensitivityQuestion 13 of 20 14. In a study done for the evaluation of prevalence of caries in a given population, the ratio of its standard deviation to the mean of data is calledStandard error of meanCoefficient of skewnessStandard variationCoefficient of varianceQuestion 14 of 20 15. In a study done in 2014, the socioeconomic status of subjects was associated with incidence of new carious lesions. This type of study design is called:DescriptiveRetrospectiveAnalyticCase controlQuestion 15 of 20 16. Specificity of a test measures:True negativesTrue positivesFalse negativesFalse positivesQuestion 16 of 20 17. Measure of dispersion in normal distribution from mean is known asVarianceStandard deviationRangeMedianQuestion 17 of 20 18. Yellow bag used for disposal ofNon-contaminated waste which can be incineratedContaminated waste which can be incineratedContaminated waste which cannot be incineratedSharps & needlesQuestion 18 of 20 19. Live viral vaccine isMeaslesSalkRabiesHepatitisQuestion 19 of 20 20. 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:Experimental studyCohort studyEcological studyCase reference studyQuestion 20 of 20 Loading...