A. Define and measure colour qualitatively
B. Define and measure physical properties of gold alloys
C. Evaluate brittleness of different alloys
D. Measures different colours quantitatively
0
Space lattice refers to_______________?
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The strain that occurs when a material is stressed to its proportional limit is______________?
A. Inter atomic movement
B. Inter atomic imbalance
C. Arrangement of atoms
D. Arrangement of molecules
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Liquids which become more rigid as the rate of deformation increases is termed as_____________?
A. Resilience
B. Maximum flexibility
C. Toughness
D. Elastic limit
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A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?
A. Thixotropic
B. Pseudoplastic
C. Dilatant
D. Newton
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Which of the following has the highest modulus of elasticity ?
A. Greater ductility
B. Greater toughness
C. A higher modulus of elasticity
D. A higher modulus of elasticity
E. More resistance to permanent deformation
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The wetting of an adherent surface by an adhesive is related to________________?
A. Dentin
B. Enamel
C. Amalgam
D. Composite Resin
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Coefficient of thermal expansion of which of following is most similar to that of tooth ?
A. Surface energy of the adherent
B. Surface texture of the adherent
C. Surface tension of the adherent
D. Nature of the adherent that is crystalline or amorphous
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The stiffness of a dental gold alloy is determined by its________________?
A. Gold inlay
B. Acrylic resin
C. Silicate cement
D. Gold foil
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Ductility of a material is a measure of it’s_______________?
A. Proportional limit
B. Modulus of elasticity
C. Ultimate tensile strength
D. Flow
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