1. heat energy required for vaporisation of liquid after boiling latent heat of fusion melting temperature latent heat of sublimation latent heat of vaporisation 2. nickel in high percentages in noble metal dental casting alloys decreases tarnish resistance increases ductility all of the above decreases strength 3. Stain removing commercial denture cleanser usually contain Soda ash Sodium hypochlorite Sodium perborate Potassium perborate 4. Following is added to zinc polycarboxylate to improve its manageability: Stannous fluoride Strontium fluoride Magnesium oxide Aluminium oxide 5. Bonding of porcelain veneer done by: GIC Polycarboxylate RM-GIC Resin cement 6. Purpose of reservior is to Help in removal of wax Gives smooth polished surface Prevent localised shrinkage porosity Prevent removal of molten metal 7. anti rust agent is 4 % sodium nitrate 2 % sodium nitrate 2 % sodium nitrite 2 %potassium nitrate 8. Fluid wax impression techniques may use following waxes except Kerr ivory inlay wax Sticky wax Applegates fluid wax Korecta wax 9. the heat treatment of soaking the alloy at a high temp to produce a solid solution followed by quenching is known as solution heat treatment liquid heat treatment age hardening strain hardening heat treatment 10. Wettability can be increased by: Increasing the contact angle Increase in surface energy Reducing the internal stresses Increase in surface area 11. type IV gold casting alloys are used for fabricating removable partial denture frameworks short span bridges 3/4 crowns inlays 12. The dentist can best control the setting time of irreversible hydrocolloid impression material by altering the Water temperature Amount of retarder added Mixing time Water powder ratio 13. In orthodontic stainless steel wire which of the following is used to reduce hardness? Chromium Silicone Cobalt Carbon 14. Which of the following is a solid solution? silver palladium cobalt chromium gallium silver alloy amalgam 15. tartaric acid in GIC is added to increase working time increase flow of material reduce viscosity modify handling properties 16. best cement for cementation of orthodontic molar bands silicophosphate silicate zinc phosphate GIC 17. Which of the following is a resorbable Bio- ceramic? Calcium phosphate Carbon Zirconia Alumina 18. The chamelon effect has been portrayed by which of the ceramic restorations Dicor In ceram Cerec Cerestore 19. Which of these is moisture active adhesive? Bis-GMA Cyanoacrylate All of the above Methyl methacrylate 20. the difference between heat cured and cold cured acrylic resin is least significant with respect to the property of color stability internal porosity hardness transverse strength Loading … Question 1 of 20
