A. Inter atomic movement
B. Inter atomic imbalance
C. Arrangement of atoms
D. Arrangement of molecules
Related Mcqs:
- Flow of a material refers to_______________?
A. Continued change of the material under a given load
B. The consistency of material when mixing
C. The homogencity of gypsum products
D. Dimensional change of the material during settings - Adeno lymphoma refers to_______________?
A. Adeno carcinoma
B. Adeno cystic lymphoma
C. Warthin’s tumour
D. Pleomorphic adenoma - Coefficienty of thermal expansion of tooth enamel is closest to_______________?
A. Slicate cement
B. Composite
C. GIC
D. Polycarboxylate - Modiffiers are added to gypsum mainly to_______________?
A. Modify setting time
B. Modify setting expansion
C. Modify strength
D. Decrease the porosity - A rough / Chalky surface of the cast is due to_______________?
A. Not waiting for 20 min before pouring
B. High speed accelerator
C. Air incorporation in the mix
D. All of the above - The function of a sprue is to_______________?
A. Form an opening of molten metal to enter the mold
B. Help polish cast restorations
C. Eliminate air bubbles on the wax pattern
D. Reproduce fine detail - Inlay wax is used to_______________?
A. Temporarily cement inlays:
B. Make inlay wax patterns
C. Invest inlay patterns
D. Box models - Casting flux is used to_______________?
A. Prevent the oxidation of the metal during melting
B. increase the melting point of the flux
C. Flaring the point of the sprue attachment
D. None of the above - Fins and spines on the casting is seen due to_______________?
A. Prolonged heating:
B. Rapid heating me
C. Water film contamination
D. Too high pressure during casting - Porosity of denture base is due to_______________?
A. Packing at dough stage
B. Curing at 160°F for 9 hrs
C. Inadequate pressure
D. All of the above
