1. Which of the following will produce the most rigid restoration for framework of same dimensionPalladium alloysPartial denture casting gold in hardened conditionWrought alloyCobalt chrome alloysQuestion 1 of 20 2. the primary oxygen scavenger in noble metal casting alloy iscopperzincironsilverQuestion 2 of 20 3. Which property of composites is most affected by the size and number of fillers:Water sorptionThermal contractionPolymerization shrinkageThermal expansionQuestion 3 of 20 4. Fluid wax impression techniques may use following waxes exceptKerr ivory inlay waxSticky waxKorecta waxApplegates fluid waxQuestion 4 of 20 5. test used to check setting time of impression material isvickers testcold bend testrockwell testvicat testQuestion 5 of 20 6. All of the following metals are considered to be base metals EXCEPT one.Which one is the EXCEPTIONchromiumcobaltsilvernickelQuestion 6 of 20 7. Ceramic is known for which property:OpaqueTransparencyTranslucencyColourQuestion 7 of 20 8. Which phase of the amalgam reaction is prone to corrosion in clinical restorations?gamma-threegamma-oneGammagamma-twoQuestion 8 of 20 9. Structural durability is a?None of the aboveBiological phenomenonMechanical phenomenonStructural phenomenonQuestion 9 of 20 10. Which of the following statements is not true regarding creep?creep is a process that happens over timeincreasing the condensation pressure decreases the creep rateundertrituration tends to increase the creep ratecreep gradually increases the marginal integrity of an amalgam restorationQuestion 10 of 20 11. porcelain are made opaque by the addition of oxides oftitanium and tinnickel and iridiumiron and aluminiumboron and magnesiumQuestion 11 of 20 12. Which of the following cannot be used for debridement of zirconia implant surfaceGold tip instrumentTitanium coated instrumentHi grade plastic instrumentStainless steel instrumentQuestion 12 of 20 13. Cementation failure of a prosthesis cemented with Zinc Polycarboxylate occurs at:Between cement layerCement and prosthesis interfaceIn the prosthesis itselfCement tooth interfaceQuestion 13 of 20 14. diamond particle size of 125-150 um is catagorised ascoarsefineextrafinemediumQuestion 14 of 20 15. the prinicipal factor in minimising the firing shrinkage of porcelain is theuniformity of particle sizethoroughness of condensationfusion temperatureratio of flux to feldsparQuestion 15 of 20 16. role of flux in soldering isto melt the solderrestrict the flow of solderremoves oxideto preheatQuestion 16 of 20 17. mercury disposal is done bysafe collection and reusecontrolled combustiontreatment with aciddeep burialQuestion 17 of 20 18. methyl methacrylate can be activated by all of the following exceptlead peroxideheattertiary aminessulfuric acid derivativesQuestion 18 of 20 19. Purpose of reservior is toPrevent localised shrinkage porosityHelp in removal of waxPrevent removal of molten metalGives smooth polished surfaceQuestion 19 of 20 20. best cement for cementation of orthodontic molar bandszinc phosphatesilicatesilicophosphateGICQuestion 20 of 20 Loading...