Medical Mcqs

The greatest stress which may be produced in a material such that stress is directly proportional to the strain is know as_____________?

(A) The elastic limit
(B) The proportional limit
(C) The yield strength
(D) Modulus of elasticity

Submitted By :Ali Uppal

Hardness number which does not depend on the ductility of metal_____________?

(A) KNH
(B) VHN
(C) RHN
(D) BHN

Submitted By :Ali Uppal

Brinnel hardness number of a dental gold alloy is directly proportional to its______________?

(A) Tensile strength
(B) Elongation
(C) Modulus of elasticity
(D) Modulus of resilience

Submitted By :Ali Uppal

When solid gets wet completely contact angle is______________?

(A) 90°
(B) 0°
(C) 0 – 90°
(D) >90°

Submitted By :Ali Uppal

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

Submitted By :Ali Uppal

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

Submitted By :Ali Uppal

KHN of enamel is close to______________?

(A) Pure gold
(B) Amalgam
(C) Prcelain
(D) Composite

Submitted By :Ali Uppal

The elastic of plastic deformation to fracture a material is its_______________?

(A) Toughness
(B) Brittleness
(C) Young’s modulus
(D) Proportional limit

Submitted By :Ali Uppal

The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________?

(A) 50 – 60 KHN
(B) 25 – 35 KHN
(C) 15 – 20 KHN
(D) 40 – 48 KHN

Submitted By :Ali Uppal

Etching of dentin does not include_____________?

(A) Removal of smear layer
(B) Exposure of collagen fibers
(C) Opening of dentinal tubules
(D) Increases surface energy

Submitted By :Ali Uppal

Previous
First
....
241
242
243
244
245
....
507
Next