1. Inlay wax suitable for making indirect pattern isType IIIAny of the aboveType IIType IQuestion 1 of 20 2. the working time of a phosphate investment mix can be increases by increasing theliquid /powder ratiomixing time and mixing efficiencyall of the abovetempperature of the mixQuestion 2 of 20 3. 18/8 stainless steel contains:18% chromium, 8% nickel18% chromium, 8% beryllium18% nickel, 8% chromium18% chromium, 8% cobaltQuestion 3 of 20 4. the ability of diresct filling gold to be welded together at room temperature is because of its malleability andlack of oxide surface coatingextreme softnesshigh thermal conductivityhigh degree of purityQuestion 4 of 20 5. Phosphate bonded investment is made carbon free:To prevent staining of ceramicTo prevent brittleness of alloyFor easier divesting of investmenTo produce smooth castingQuestion 5 of 20 6. Purpose of reservior is toPrevent removal of molten metalPrevent localised shrinkage porosityHelp in removal of waxGives smooth polished surfaceQuestion 6 of 20 7. highest water solubility is seen inzinc silicophosphatezinc phosphatezinc oxide eugenolzinc polycarboxylateQuestion 7 of 20 8. Stress is:A deformation resulting from an applied loadAn internal force opposing an applied loadForce applied per unit areaForce applied perpendicular to the surfaceQuestion 8 of 20 9. gypsum investments disintegrates at195 degree C200 degree C700 degree C140 degree CQuestion 9 of 20 10. In metal-ceramic restorations, failure or fracture usually occurs:in the metalNone of the aboveat the porcelain-metal interfacein the porcelainQuestion 10 of 20 11. The relative amount of lightness or darkness in a color is referred to as:intensityhuechromavalueQuestion 11 of 20 12. best cement for cementation of orthodontic molar bandssilicophosphateGICzinc phosphatesilicateQuestion 12 of 20 13. Bonding of porcelain veneer done by:GICResin cementRM-GICPolycarboxylateQuestion 13 of 20 14. Green shrinkage seen in :Gypsum Bonded investmentEthyl Silicate bonded investmentPhosphate Bonded InvestmentIt is seen in all types of investmentsQuestion 14 of 20 15. Soldering flux is composed of all of the following EXCEPT one. Which one is the EXCEPTION?alumboraxsilicasodium pyroborateQuestion 15 of 20 16. for zinc oxide eugenol all of the following are true exceptolive oil is used as plasticizerresin decreses the brittleness of set cementaddition of EBA in concentration of 37-50 percent increases strengthaddition of methyl methacrylate resin increases strengthQuestion 16 of 20 17. Fluid wax impression techniques may use following waxes exceptKerr ivory inlay waxKorecta waxSticky waxApplegates fluid waxQuestion 17 of 20 18. Which phase of the amalgam reaction is prone to corrosion in clinical restorations?gamma-threegamma-oneGammagamma-twoQuestion 18 of 20 19. A system of manufacturing copings from blocks of pure titanium by machine duplication and spark erosion isProceraCaptekEmpressInceramQuestion 19 of 20 20. While shade matching; as the brightness becomes more intense, color appears to change. This effect is known asBezold-Brucke effectmetamerismFlouroscenceMunsell effectQuestion 20 of 20 Loading...