M C Q s D r i v e

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.

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
Ability of an orthodontic wire to spring back to its original shape is evaluated by_____________?
A Brittleness
B Resilience
C Tensile strength
D Toughness
Correct Answer: Resilience