A. Acts as an accelerator

B. Initiating the setting reaction

D. Provides gel strength

A. Loss of luster of impression material

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

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

A. Hydrocolloids, polyether, silicones, polysulfide

C. Silicones, hydrocolloids, polyether, polysulfide

D. Polysulfide, hydrocolloids, silicones, polyether

B. Impression plaster

C. Rubber base impression material

D. Alginate

A. They exhibit a very low setting shrinkage

B. They evolve hydrogen when cast if they are not fully cured

D. They have a lower tear resistance than polysulphide rubbers

A. High gold

B. Low gold

C. Palladium Ag

A. Natural gas

C. Acetylene

D. Hydrogen

B. Retained cement in gingival sulcus

C. Supracocclusion of restoration

D. Excess acid in mix

A. Magnesium oxide & Phosphate

B. Magnesium oxide & Ortho Phosphoric acid

C. Magnesium oxide & Phosphoric acid

A. Impression plaster

B. Metallic oxide paste

C. Irreversible hydrocolloid

A. Plaster of paris

C. Alginate

D. Zinc oxide eugenol

A. 18% Chromium 8% Cobalt

C. 18% Nickel 8% Chrominum

D. 18% Carbon 8% Iron

A. Hygroscopic expansion

B. Thermal expansion

D. Wax expansion

A. Impression compound

C. Zinc Oxide eugenol (ZOE) paste

D. Wax

A. Base plate wax

B. Boxing wax

D. Beading wax

A. Plasticizer

B. Reactor

C. Accelerator

A. Silver-Palladium

B. Nickel-Titanium

C. Nickel-Chromium

B. Close adaptation to soft tissues

C. Reproduction of surface details

D. Compatibility with gypsum products

A. Hardness of the set product

B. Setting expansion

C. None of the above

A. Heating at 750C and then quenching to room temperature

B. Heating 750C and slowly cooling to zero degree

C. Heating quickly upto 450C followed by sudden quenching

A. Aluminium

C. Stainless steel wire

D. TMA wire

A. Quartz

B. Corundum

C. Tridymite

A. Speed and length of hand spatulation

B. Altering P / L Ratio

C. Altering temperature of mixing water

A. Immersion technique

C. Tempering technique

D. Injecting technique

A. Not waiting for 20 min before pouring

B. Air incorporation in the mix

D. High speed accelerator

A. Reversible hydrocolloid

B. Silicone

D. Mercaptan

A. Mechanical action of saliva

B. Evolution

D. Chemical change

A. Silver

B. Copper

C. Palladium

B. In which the crystals are all of uniform size

C. Which undergoes rapid expansion

D. In which amount of water of hydration is controlled

A. Platinum

B. Iridium

D. Ruthinium

A. Improper casting pressure

B. Improper heating of the investment

C. Improper angulation of sprue

A. Inlay wax

C. Paraffin wax

D. Microcrystalline wax

A. increase the melting point of the flux

C. None of the above

D. Prevent the oxidation of the metal during melting

A. polyether polymer

B. Colloidal silica

D. Di-vinyl poly (dimethyl siloxane)

A. 19%

C. 2%

D. 4%

A. Type VII and type VIII gold

B. None of the above

D. Type V and type VI gold

B. 4

C. 12

D. 1

A. Alcohol

B. CaCl2

C. Zinc acetate

A. Syringe agar and tray agar

C. Syringe agar and impression compound

D. Chilled alginate and impression compound

A. Cr, Gold, Ti

B. Cr, Fe, Ti

D. Cr, Mo, Ti

B. Whitens the alloy

C. Scavenger

D. Hardener

B. Impression of whole teeth

C. Replica of whole teeth

D. Impression of single tooth

A. Chick cells

B. Chemicals

C. Bullock heart

A. Equal to the substrate material

B. Temperature not relevant

D. Greater than the substrate material

A. Gelation increase in both on increase in temperature

B. Mixing time is increased to reduce the setting time

D. Both can be re-used for fresh impressions

A. Increase the shelf life of investment

B. aid in hygroscopic expansion

C. Increase the strength

A. Platinum salt catalyst

C. Stannous octate

D. Aromatic sulfonate esters

A. no water

B. Less water

C. None of the above

A. Impression compound

B. Elastomer

D. Zinc oxide eugenol

B. Remove excess impression material

C. Accelerate the setting

D. Hydrate the impression