1. Clinical appearance of GIC is dictated by Viscosity of liquid Acid content of liquid Particle size of powder Chemical composition of cement 2. When electroplating an impression with copper the cathode is Copper sulphate Distilled water The impression being electroplated A copper paste or rod 3. Bond strength required to counteract the effect of polymerization shrinkage in composite resins: 7 MPa 17 MPa 21 MPa 56 MPa 4. Hardening heat treatment for gold copper alloys involves Heating to 700 degree C for 10 min followed by quenching Quenching immediately after recrystallisation Quenching immediately after casting Heating to 350 degree C for 15-30 min followed by quenching 5. porcelain are made opaque by the addition of oxides of iron and aluminium boron and magnesium nickel and iridium titanium and tin 6. Which of the following investment exhibit green shrinkage Silica bonded Gypsum bonded Phosphate bonded All of the above 7. Which composite type is 70% to 77% percent filled by volume and has an average particle size ranging from 1 to 3 um. microhybrids hybrids packables Microfills 8. highest water solubility is seen in zinc oxide eugenol zinc phosphate zinc silicophosphate zinc polycarboxylate 9. a thinner mix of gypsum bondeded investment will result in increases thermal expansion increases setting expansion produce a smoother casting decrease setting expansion 10. for best results when using an elastic impression material the prepared tooth should be free of surface moisture covered thinly with a waer soluble lubricant covered with a surface tension reducing agent or air dried very dry 11. Polishing agent which is known as whitening agent Rouge None of the above Chromium oxide Iron oxide 12. During polymerisation from monomer to polymer density changes from 0.94 to 1.19 and volume shrinkage 21% density changes from 0.94 to 1.19 and volume shrinkage 7% density changes from 1.19 to 0.94 and volume shrinkage 7% density changes from 1.19 to 0.94 and volume shrinkage 21% 13. the activator for autopolymerising resin is likely to be hydroquinone benzoyl peroxide tertiary amine heat 14. the working time of a phosphate investment mix can be increases by increasing the liquid /powder ratio tempperature of the mix mixing time and mixing efficiency all of the above 15. of the following, most kind to the pulp is polycarboxylate silicate cements zinc phosphate GIC 16. the strength of gypsum bonded investment is dependednt upon gypsum content copper content carbon content silica content 17. Maximum shrinkage occurs in which stage: Medium bisque Low bisque High bisque All stages show equal shrinkage 18. the antiflux used for gold solders is silicon cryolite graphite titanium 19. Brush heap structure is seen in: Alginate Polyethers Addition silicones Impression compound 20. Which material is sensitive to Sulfur contamination from latex gloves: Polyether Polysulfide Agar Addition silicone Loading … Question 1 of 20
