A. Is at normal room temperature

C. Equal of BP of water

D. < B.P of water

A. Using a short and wide sprue

B. Preventing rapid heating the investment in burnout oven

C. Using asbestos linear

B. Dentin

C. Amalgam

D. Composite Resin

B. Should have high contact angle

C. None of the above

D. Mechanical interlocking should be present

A. Less polymerization shrinkage

B. Poor colour stability

C. Decrease in vertical dimension

A. Step-growth polymerization

B. Addition polymerization

C. Condensation polymerization

B. Model plaster

C. Stone plaster

D. Impression plaster

A. Imbibition

C. Hysterisis

D. Syneresis

A. Altering ratio of two pastes

B. Adding a drop of eugenol

D. Adding a drop of water

A. Polysulphide rubber

B. Reversible hydrocolloid

C. Alginate

B. Gold solder and fluoride flux

C. Silver Solder and borax flux

D. Gold solder and borax flux

A. Modelling compound

B. Impression wax

D. Hydro cal

B. Ferrite to austenite

C. Austenite to ferrite

D. Martensite to austenite

A. Improved adhesion of the impression to the tray

C. Reduced contamination by saliva

D. Reduced dimensional instability

A. Pinhole porosity

B. Gas inclusion porosity

D. Micro porosity

B. Medium viscosity elastomeric impression material

C. None of the above

D. High viscosity elastomeric impression material

A. Large reservoir

B. More porous investment in the mould

D. Hollow sprue pin

A. Free flowing wax

B. Reversible hydrocolloids

D. Zinc oxide eugenol impression paste

A. Impression paste

C. Silicone

D. Impression plaster

B. Lower the melting point

C. Replace casting wax

D. Speed the burnout process

A. Crystalline structure

C. High fusion temperature

D. Formation of cross linkage with heating

A. Polysulphide

B. Polyetner

C. Addition silicone

B. 3%

C. 1.37%

D. 1.56%

B. Has a W / P of 0.2

C. Is a hamihydrate

D. Is wet calcined hemihydrate

B. Polyether

C. Addition Polysilicon

D. A and B

A. 85

C. 65

D. 55

A. Under air pressure in nitrogen atmosphere

C. In specially fabricated aluminium vanadium

D. Using CAD-CAM technique

A. Linseed oil

B. Olive oil

C. All of these

A. Silver bromide

B. Silver iodide

D. Silver fluorides

A. Dry strength

B. Compressive strength

D. Water strength

A. Improve bonding

B. Harden the metal ceramic Ag-Pd alloy

D. None of the above

A. Cannot register fine surface details

B. Solidfies between 50 70C

C. Facilitates fabrication of metal dyes

A. Improper venting

B. A and B

C. Impurities in gold

A. one inch

C. inch

D. 3/8 inch

A. Zinc oxide-eugenol

B. Zinc Phosphate cement

D. Reversible hydrocolloid

A. After the start of appearing elastic properties of impression material

C. Just after the start of appearing elastic properties of impression material

D. Loss of lusture of impression material

B. Warpage

C. Dimensional change

D. Thermal conductivity

B. Supporting the impression along with the tray to prevent disengaging of the tray alone

C. Wetting the periphery of the impression with moist cotton to break the peripheral seal

D. Slight rocking of the impression to disengage it from the undercut

B. Type III Hard

C. Type I Soft

D. Type II Hard

B. 100 ml of water to 60 gms of powder

C. 15 ml of water to 40 gms of powder

D. 40 ml of water to 40 gms of powder

B. Indium

C. Palladium

D. Chromium

A. Reaction between hemihydrate and hihydrate

B. Nucleation and growth of CaSo4 H2O crystals

D. Reaction between CaSO4+ 2H2O and water

A. Polyether

B. Condensation silicone

D. Zinc oxide impression material

A. H2O interferes with hygroscopic expansion

B. H2O interferes with Crystallization of dihydrate

D. H2O inhibits polymerization of dental resin

B. Calcium anhydrate

C. Calcium phosphate

D. Calcium sulphate dihydrate

B. 10%

C. 8%

D. 4%

A. Utility wax

B. Sticky wax

D. Inlay wax

A. Anti expansion solution

C. Die stones

D. Plaster of paris

A. Adding heavy metal salts

C. Altering the matrix

D. Reducing the diatomaceous earth

A. Polyether

B. Condensation polysilicone

D. Addition polysilicone