1. Inlay wax suitable for making indirect pattern isType IType IIIType IIAny of the aboveQuestion 1 of 20 2. oxides of all of the following elements in noble metal alloys help in bonding to porcelain excepttinindiumironnickelQuestion 2 of 20 3. Palladium and platinum are added to base metal alloys to:Impart colorReduce brittlenessAs grain refinersAct as scavengerQuestion 3 of 20 4. Which of the following best describes "strain hardening" or "work hardening"?hardening (or deformation) of a metal at room temperaturesoftening a metal by controlled heating and coolinghardening (or deformation) of a metal at a very high temperaturesoftening a metal at room temperatureQuestion 4 of 20 5. dental impression compound is characterised by having aspecific melting pointcrystalline atomic structurerelatively low thermal conductivitycross linkage reaction upon heatingQuestion 5 of 20 6. a thinner mix of gypsum bondeded investment will result indecrease setting expansionproduce a smoother castingincreases setting expansionincreases thermal expansionQuestion 6 of 20 7. the activator for autopolymerising resin is likely to beheatbenzoyl peroxidehydroquinonetertiary amineQuestion 7 of 20 8. When Alginate is mixed with tap water having high calcium sulfate and magnesium, what happensWeakened stone diesRetardation of setting reactionAcceleration of setting reactionPermanent deformation of alginateQuestion 8 of 20 9. the property of amalgam that makes it undesirable to bevel occlusal margins of an amalgam cavity preparation is itsmalleabilitybrittlenessflowductilityQuestion 9 of 20 10. self curing acrylics for tooth restorations are least compatible with which materialcopal varnishalcoholeugenolcalcium hydroxideQuestion 10 of 20 11. which of the following will form a peritectic alloysilver and coppersilver and palladiumsilver and tinsilver and goldQuestion 11 of 20 12. Stain removing commercial denture cleanser usually containPotassium perborateSodium hypochloriteSodium perborateSoda ashQuestion 12 of 20 13. Animal test used to check biocompatibility of dental material is all exceptbuehlar testImplantation testAme's testLD50 testQuestion 13 of 20 14. Which phase of the amalgam reaction is prone to corrosion in clinical restorations?gamma-threeGammagamma-twogamma-oneQuestion 14 of 20 15. strain hardening of a metal decreases itsproportional limitresistance to corrosionstrengthsurface hardnessQuestion 15 of 20 16. Soldering flux is composed of all of the following EXCEPT one. Which one is the EXCEPTION?boraxalumsodium pyroboratesilicaQuestion 16 of 20 17. Which investment shows high contraction due to loss of water and alcohol:Phosphate bonded investmentSilicate bondedGypsum bondedMg bondedQuestion 17 of 20 18. the union of metal to porcelain fused restoration is bymechanically rough surfacecobalt and porcelaintin and indium oxidesnickel and orcelainQuestion 18 of 20 19. Green shrinkage seen in :Ethyl Silicate bonded investmentIt is seen in all types of investmentsGypsum Bonded investmentPhosphate Bonded InvestmentQuestion 19 of 20 20. best cement for cementation of orthodontic molar bandszinc phosphatesilicateGICsilicophosphateQuestion 20 of 20 Loading...