1. Which composite type is 70% to 77% percent filled by volume and has an average particle size ranging from 1 to 3 um. packables microhybrids hybrids Microfills 2. Tg of impression compound is 100 degree c 43.5 degree c 39 degree c 65 degree c 3. Bonding of porcelain veneer done by: Resin cement GIC RM-GIC Polycarboxylate 4. Stain removing commercial denture cleanser usually contain Sodium hypochlorite Soda ash Potassium perborate Sodium perborate 5. Fluoride flux used in soldering works by Prevents formation of chromium oxide or dissolves already formed chromium oxide Weakens the solder joint Forms a protective film during soldering Preventing flow of solder to other areas 6. each crystal of the polycrystalline metal is termed dendrite grain seed bush 7. Stress is: Force applied perpendicular to the surface Force applied per unit area A deformation resulting from an applied load An internal force opposing an applied load 8. Mercaptan are a component of: Polysulphide Polyether Addition silicone Condensation silicone 9. During polymerisation from monomer to polymer density changes from 1.19 to 0.94 and volume shrinkage 7% density changes from 1.19 to 0.94 and volume shrinkage 21% density changes from 0.94 to 1.19 and volume shrinkage 7% density changes from 0.94 to 1.19 and volume shrinkage 21% 10. Transformation toughening of zirconia occurs due to change in phase from: Cubic to tetragonal Tetragonal to monoclinic Austenitic to martensiti Monoclinic to tetragonal 11. Constituent of bioactive glass: Zirconia Silica Alumina Calcium carbonate 12. highest water solubility is seen in zinc silicophosphate zinc oxide eugenol zinc phosphate zinc polycarboxylate 13. Which material is sensitive to Sulfur contamination from latex gloves: Polyether Polysulfide Addition silicone Agar 14. the porcelain constituent that fuses at firing temperature and forms a matrix is feldspar aluminium oxide quartz kaolin 15. Least amount of mercury is required in Hybrid Admixed Spherical Lathe cut 16. Must commonly used coupling agent of composites:- Silicates Organosilanes Zirconate Titanates 17. In orthodontic stainless steel wire which of the following is used to reduce hardness? Cobalt Carbon Silicone Chromium 18. Which of the following will produce the most rigid restoration for framework of same dimension Cobalt chrome alloys Wrought alloy Partial denture casting gold in hardened condition Palladium alloys 19. direct wax pattern may distort due to release of internal stresses the placement of reservior composition of wax methoc of heating of wax 20. which zone of flame is used for melting alloys central zone combustion zone reducing zone oxidising zone Loading … Question 1 of 20
