1. Which of the following statements is not true regarding creep?creep is a process that happens over timeundertrituration tends to increase the creep rateincreasing the condensation pressure decreases the creep ratecreep gradually increases the marginal integrity of an amalgam restorationQuestion 1 of 20 2. Casting shrinkage in a type 2 gypsum investment is counteracted by:Increasing the thickness of casting ringThermal expansion of the investmentHygroscopic setting expansion of investmentSetting expansion of investmentQuestion 2 of 20 3. Principle hardener in gold alloy isCopperZincSilverPalladiumQuestion 3 of 20 4. Camouflage is a property of which ceramic?AllCerecDicorCerastoneQuestion 4 of 20 5. main advantage of zinc phosphate over GIC isincrease modulus of elasticitymore biocompatibilityincrease compressive strengthincreased tensile strengthQuestion 5 of 20 6. gypsum investments disintegrates at195 degree C700 degree C200 degree C140 degree CQuestion 6 of 20 7. Structural durability is a?None of the aboveMechanical phenomenonBiological phenomenonStructural phenomenonQuestion 7 of 20 8. For obtaining harder dies to be used for making wax patterns, all of the following can be done exceptUse an epoxy resin based dieGold plating of dieSilver plating of dieAddition of die hardener to gypsumQuestion 8 of 20 9. Fluid wax impression techniques may use following waxes exceptKorecta waxSticky waxApplegates fluid waxKerr ivory inlay waxQuestion 9 of 20 10. best cement for cementation of orthodontic molar bandssilicatesilicophosphateGICzinc phosphateQuestion 10 of 20 11. Soldering flux is composed of all of the following EXCEPT one. Which one is the EXCEPTION?sodium pyroborateboraxsilicaalumQuestion 11 of 20 12. Stress is:An internal force opposing an applied loadForce applied per unit areaA deformation resulting from an applied loadForce applied perpendicular to the surfaceQuestion 12 of 20 13. Bonding of porcelain veneer done by:PolycarboxylateRM-GICResin cementGICQuestion 13 of 20 14. Addition of fillers in composite resins:Decreases polymerization shrinkageIncreases wettabilityReduces strengthDecreases wear resistanceQuestion 14 of 20 15. in processing an acrylic denture in a water bath a proper heating cycle is desired because of the possibility ofwarpageshrinkage of the denturevolumetric expansion of the denture causing an open biteporosity due to boiling of the monomerQuestion 15 of 20 16. While shade matching; as the brightness becomes more intense, color appears to change. This effect is known asFlouroscenceMunsell effectmetamerismBezold-Brucke effectQuestion 16 of 20 17. The relative amount of lightness or darkness in a color is referred to as:huechromavalueintensityQuestion 17 of 20 18. Wettability can be increased by:Increase in surface areaReducing the internal stressesIncrease in surface energyIncreasing the contact angleQuestion 18 of 20 19. Disinfection of alginate impressions when immersion method is used should not exceed5m30m20m10mQuestion 19 of 20 20. within practical limits when the water/powder ratio is increased beyond the recommended amount in mixing plaster theall of the abovecompressive strength is decreasedsetting expansion is decreasedsetting time is increasedQuestion 20 of 20 Loading...