A. Maximum matrix and minimum alloy phase
B. Minimum matrix and maximum alloy phase
C. Maximum matrix phase
D. Minimum alloy phase
A. 5 minutes
B. 6 minutes
C. 3 minutes
D. 15 minutes
A. y1
B. y2
C. B1
D. y
A. High strength
B. Sets quickly
C. Needs no squeezing of excess mercury
D. Greater plasticity and adapts well to cavity walls
A. Accelerated corrosion
B. Fracture of the restoration
C. Merginal damage
D. All of the above
A. Reduces contraction
B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
C. Decreases creep
D. Gives al dull and crumbly amalgam
A. Direct contact with the mercury
B. Inhalation of mercury vapours
C. Ingestion of mercury
D. None of the above
A. mg / m3
B. 0.05 mg / m3
C. mg / m3
D. mg / m3
A. Sulphides of silver
B. Oxides of tin
C. Chlorides of tin
D. All of the above
A. Silver / Mercury phase
B. Silver / Tin phase
C. Tin / Mercury phase
D. Zinc / Mercury phase