Medical Mcqs

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. Plaster of paris
B. Soluble plaster
C. Anti – expansion solution
D. Die stones

A. Solubility
B. Shelf life
C. Chemical formula
D. Particle porosity

A. More water
B. Less water
C. no water
D. None of the above

A. Class II stone
B. Densite
C. Class I stone or hydrocal
D. Model or lab plaster

A. Alpha – hemihydrates
B. Beta – hemihydrates
C. Calcium sulphate dihydrate
D. Orthorhombic anhydrate

A. Tensile strength
B. Wet strength
C. Green strength
D. compressive strength

A. To regulate the setting expansion
B. Regulate setting time
C. Acts as retarder
D. None

A. Slower the hygroscopic expansion
B. Greater the hygroscopic expansion
C. Normal setting expansion
D. No setting expansion

A. 1
B. 4
C. 12
D. 25