- (A) Slower the hygroscopic expansion
- (B) Greater the hygroscopic expansion
- (C) Normal setting expansion
- (D) No setting expansion
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- (A) To regulate the setting expansion
- (B) Regulate setting time
- (C) Acts as retarder
- (D) None
- (A) Tensile strength
- (B) Wet strength
- (C) Green strength
- (D) compressive strength
- (A) Alpha – hemihydrates
- (B) Beta – hemihydrates
- (C) Calcium sulphate dihydrate
- (D) Orthorhombic anhydrate
- (A) Class II stone
- (B) Densite
- (C) Class I stone or hydrocal
- (D) Model or lab plaster
- (A) More water
- (B) Less water
- (C) no water
- (D) None of the above
- (A) Solubility
- (B) Shelf life
- (C) Chemical formula
- (D) Particle porosity
- (A) Plaster of paris
- (B) Soluble plaster
- (C) Anti – expansion solution
- (D) Die stones
- (A) Which undergoes rapid expansion
- (B) In which accelerators or retarders have been added according to need
- (C) In which amount of water of hydration is controlled
- (D) In which the crystals are all of uniform size
- (A) Impression of single tooth
- (B) Impression of whole teeth
- (C) Replica of single tooth
- (D) Replica of whole teeth
