1. Which of the following investment exhibit green shrinkagePhosphate bondedGypsum bondedAll of the aboveSilica bondedQuestion 1 of 20 2. methyl methacrylate can be activated by all of the following excepttertiary aminesheatsulfuric acid derivativeslead peroxideQuestion 2 of 20 3. Palladium and platinum are added to base metal alloys to:Impart colorAs grain refinersReduce brittlenessAct as scavengerQuestion 3 of 20 4. Use of type II ZOE cement:Intermediate restorationTemporary restorationPermanent cementationTemporary cementationQuestion 4 of 20 5. Disinfection of alginate impressions when immersion method is used should not exceed30m10m5m20mQuestion 5 of 20 6. when force is applied perpendicular to the metal surface,resultant deformation istensile strainshearing stresstensile stresscompressive strainQuestion 6 of 20 7. Which of the following cements provide maximum resistance to decalcification while placing bands on molarZinc phosphateGICPolycarboxylateSilicateQuestion 7 of 20 8. 18/8 stainless steel contains:18% chromium, 8% cobalt18% nickel, 8% chromium18% chromium, 8% nickel18% chromium, 8% berylliumQuestion 8 of 20 9. The main component of gypsum bonded investment which provides thermal expansion to compensate for alloy solidification shrinkage isNone of the aboveModifiers like magnesium oxide and sodium chlorideRefractory fillerBinderQuestion 9 of 20 10. Material added in In-Ceram:AluminaFeldsparLuciteKaolinQuestion 10 of 20 11. all of the following processes can be performed at room temp exceptforgingstrain hardeningwork hardeningcold workingQuestion 11 of 20 12. titanium casting is doneusing cad-cam techniqueunder vaccum in argon atmospherein specifically fabricated aluminium vanadium cruciblesunder air pressure in nitrogen atmosphereQuestion 12 of 20 13. Most common accelerator used in gypsum is:1 % potassium sulphate2% sodium sulphateSodium Chloride2% potassium sulphateQuestion 13 of 20 14. If gold content of the alloy decreases:Both strength and ductility decreasesStrength decreases, ductility increasesBoth strength and ductility increasesStrength increases, ductility decreasesQuestion 14 of 20 15. for a successful metal ceramic restoration both the metal and porcelain must have closely matchedsolidification shrinkagespecific gravitycoefficient of thermal expansioncompressive strengthQuestion 15 of 20 16. The relative amount of lightness or darkness in a color is referred to as:chromavaluehueintensityQuestion 16 of 20 17. Which of the following statements is not true regarding glass ionomer cements?high solubility after initial settingthermal expansion similar to toothgood thermal insulatorrelease fluorideQuestion 17 of 20 18. the effectiveness of condensation and prevention of porcelain shrinkage is determined byspeed of icrease of furnace heatshape and size of particlesthickness of platinum mixuse of powder containing particles that are of same sizeQuestion 18 of 20 19. Which of the following is formed by spray atomization and chemical precipitation of molten goldMat goldGold foilCrystalline goldGranular goldQuestion 19 of 20 20. In metal-ceramic restorations, failure or fracture usually occurs:at the porcelain-metal interfacein the porcelainNone of the abovein the metalQuestion 20 of 20 Loading...