The strain that occurs when a material is stressed to its proportional limit is______________?
A. Resilience
B. Maximum flexibility
C. Toughness
D. Elastic limit
Medical Mcqs
Liquids which become more rigid as the rate of deformation increases is termed as_____________?
Liquids which become more rigid as the rate of deformation increases is termed as_____________?
A. Thixotropic
B. Pseudoplastic
C. Dilatant
D. Newton
A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?
A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?
A. Greater ductility
B. Greater toughness
C. A higher modulus of elasticity
D. A higher modulus of elasticity
E. More resistance to permanent deformation
Which of the following has the highest modulus of elasticity ?
Which of the following has the highest modulus of elasticity ?
A. Dentin
B. Enamel
C. Amalgam
D. Composite Resin
The wetting of an adherent surface by an adhesive is related to________________?
The wetting of an adherent surface by an adhesive is related to________________?
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
Coefficient of thermal expansion of which of following is most similar to that of tooth ?
Coefficient of thermal expansion of which of following is most similar to that of tooth ?
A. Gold inlay
B. Acrylic resin
C. Silicate cement
D. Gold foil
The stiffness of a dental gold alloy is determined by its________________?
The stiffness of a dental gold alloy is determined by its________________?
A. Proportional limit
B. Modulus of elasticity
C. Ultimate tensile strength
D. Flow
Ductility of a material is a measure of it’s_______________?
Ductility of a material is a measure of it’s_______________?
A. Grain elongation
B. Anealing
C. Cold working
D. Work hardening
Sublimation is the conversion of a___________________?
Sublimation is the conversion of a___________________?
A. Solid directly to gas
B. Gas to liquid and then to soild
C. Gas directly to liquid
D. Solid to liquid and then to gas
Modulus of elasticity means_______________?
Modulus of elasticity means_______________?
A. Rigidity or stiffness of the material
B. Ability to be stretched with permanent deformation
C. Ductility of a material
D. Malleability of the metal