Medical MCQs

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. Mositure 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. 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. Dry strength
B. Green strength
C. Water strength
D. Compressive strength