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.Management Sciences
Category: Dental Materials
When two metals are completely miscible in liquid state and they remain completely mixed on solidifiation, the alloy formed is called________________?
A. Solid solution
B. Eutectic mixture
C. Peritectic mixture
D. Inter metallic compounds
Decrease in creep occurs in_______________?
A. Under trituration or over trituration of amalgam
B. Decreases with condensation pressure
C. Increase with condensation pressure
D. Cannot be predictable
Sol – gel transformation is seen in________________?
A. Impression plaster
B. Hydrocolloids
C. Elastomer
D. Impression compound
Which is best material for RPD impression_______________?
A. Impression plaster
B. Irreversible hydrocolloid
C. Reversible hydroollioid
D. None of the above
Cohesion of gold foil is an example of______________?
A. Atomic attraction and welding
B. Annealing
C. Wedging
D. Adaptation
The opacity in ceramics is achieved by adding_______________?
A. Boric oxide
B. Copper oxide
C. Silica
D. Titanium oxide
In spherical alloys as compared to lathe cut____________?
A. Less condensing force is required
B. More condensing force is required
C. Both require same condensing force
D. Manipulation is easy
Amalgam achieves 70% of the strength by____________?
A. hours
B. 4 hours
C. 8 hours
D. 16 hours
The type of spatula used to mix composite is________________?
A. Plastic
B. Stainless steel
C. Iron
D. None of the above
The pure form of gold used in dentistry is known as___________________?
A. Cohesive gold
B. Non cohesive gold
C. Class I casting gold
D. Class IV casting gold
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