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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Which one of the following is the result of applying a load to a wire below its modulus of elasticity on a load deflection diagram ?
A Fracture of the wire
B permanent deformation
C Spring back
D Increase in stiffness
Correct Answer: Spring back
A fluid having constant viscosity that does not depend upon the strain rate is said to be_______________?
A Viscoelastic
B Pseudoplastic
C Plastic
D Newtonian
Correct Answer: Newtonian
Which of the following hardness test is a micro hardness test ?
A Brinnel
B Knoop
C Shore-A
D Rockwell
Correct Answer: Knoop
Which of the following properties of dental materials is time dependent_______________?
A Creep
B Resillience
C Elastic limit
D Ultimate strength
Correct Answer: Creep
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
Correct Answer: Continued change of the material under a given load
The ability of the base to resist occlusal forces and to support the restoration is affected by_______________?
A Compressive strength
B Tensile strength
C Young’s modulus
D Modulus of elasticity
Correct Answer: Compressive strength
The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its______________?
A Resilience
B Elastic limit / Elastic strain
C Hardness
D Fatigue resistance
Correct Answer: Elastic limit / Elastic strain
Which of the following physical property can be used to estimate indirectly the proportional limit of gold alloys ?
A Vickers’s hardness number
B Knoop hardness number
C Brinell hardness number
D Rockwell hardness number
Correct Answer: Brinell hardness number
Property of the material, which describes the resistance to abrasion, is_________________?
A Hardness
B Yield strength
C Modulus of elasticity
D None of the above
Correct Answer: Hardness
Ultimate tensile strength refers to_________________?
A Stress before rupture
B Stress after rupture
C Longitudinal compressive strength
D Horizontal compressive strength
Correct Answer: Stress before rupture
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