- (A) Not waiting for 20 min before pouring
- (B) High speed accelerator
- (C) Air incorporation in the mix
- (D) All of the above
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- (A) Rapid spatulation results in decreased setting time
- (B) 2% potassium sulphate is accelerator
- (C) Citrates are retarders
- (D) All of the above
- (A) Chemical reaction
- (B) Cold
- (C) Heat
- (D) Pressure
- (A) They evolve hydrogen when cast if they are not fully cured
- (B) They exhibit a very low setting shrinkage
- (C) They have a lower tear resistance than polysulphide rubbers
- (D) They set by condensation polymerisation
- (A) Adding a small amount of glycerine
- (B) Adding a small amount of water
- (C) Altering the amounts of the two pastes used
- (D) Cooling mixing slab
- (A) Moisture absorption
- (B) Temperature lag between gelation and liquefaction temperature
- (C) Phenomenon of conversion of gel into sol
- (D) All of the above
- (A) Marcaptan group
- (B) Hydroxyl group
- (C) Silane group
- (D) Virryl group
- (A) Agar-agar
- (B) Alginate
- (C) Zinc oxide eugenol
- (D) Plaster of paris
- (A) Seen as water loss
- (B) Water absorption
- (C) Shrinkage
- (D) Gelation
- (A) Dry strength
- (B) Green strength
- (C) Water strength
- (D) Compressive strength
