1. All of the following are true about standard error of mean except:Based on normal distributionIt depends on standard deviation of meanAs the sample size increases, standard error will also increaseUsed to estimate confidence limitQuestion 1 of 20 2. Developing an answer or a solution to an already known problem or a question which can be quantified and analysed is known as:Statistical analysisData collectionHypothesis formulationAnalysis and interpretationQuestion 2 of 20 3. A child shows skeletal fluorosis when he is drinking water for a long time with excess fluoride level of:3-6 ppm1-1.5 ppm1.5-3 ppm0.5-1 ppmQuestion 3 of 20 4. Comprehensive school based dental care for whole country is adopted byNew ZealandSwedenAustraliaUSAQuestion 4 of 20 5. Diameter of adult tooth brush range0.006-0.0090.004-0.0070.007-0.0150.010-0.012Question 5 of 20 6. All of the following are true about cluster sampling except:The sample size may vary according to study designIt is a type of probability sampleSamples are similar to those in Simple Random SamplingIs a Rapid and simple methodQuestion 6 of 20 7. Method of identifying missing and supplementing case is patient is:MonitoringSample registrationSentinel SurveillanceNotification systemQuestion 7 of 20 8. Shortest incubation period is seen in:Hepatitis AInfluenzaRubellaHepatitis BQuestion 8 of 20 9. Savlon containsCetrimide + CetavlonCetrimide + Chlorhexidine + butyl alcoholCetrimide + butyl alcoholCetrimide + ChlorhexidineQuestion 9 of 20 10. A test has high false positive rate in a community. True isHigh specificityHigh sensitivityLow prevalenceHigh prevalenceQuestion 10 of 20 11. Eradication is defined as:Treatment of all patients with the diseaseInterruption of transmission of diseaseTermination of all man to man transmission of agentCessation of disease progression in a local geographical areaQuestion 11 of 20 12. Carry over effect is seen inCase control studyCohort studyCross over studyConcurrent parallel trialQuestion 12 of 20 13. When an outcome is compared with intended objectives, it is called as -Network analysisInput-Output analysisEvaluationMonitoringQuestion 13 of 20 14. Sequence of contents in scientific report of oral health survey:Introduction, Materials and methods, result, discussionReview of literature, Aim, methods and material, resultsAim, Materials and methods, result, conclusionIntroduction, Aim, materials and methods, resultsQuestion 14 of 20 15. 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 regulator and increases the concentration of fluoride reaching the fetusPlacenta acts as a barrier to fluoride ionsPlacenta has no role in fluoride regulation to fetusQuestion 15 of 20 16. Which of the following types of bias can be reduced by allowing equal interview timeBerkesonian biasSelection biasInterviewer biasRecall biasQuestion 16 of 20 17. Double pot is method ofChlorinationDefluoridationOzonisationFluoridationQuestion 17 of 20 18. Degree of relationship between cause and effect is represented bySignificanceRisk ratioP valuePower of studyQuestion 18 of 20 19. Saliva contains which of the following acts as defence mechanism for prevention of dental cariesLysozymeLactoperoxidaseAll of the aboveLactoferrinQuestion 19 of 20 20. All the following indicators are included in physical quality of life Index (PQLI) exceptInfant mortality rateLife expectancy at age oneLiteracy ratePer capita incomeQuestion 20 of 20 Loading...