Dental Materials MCQs

Page No. 51

Non metal which conducts elactricity______________?


aGraphite

✓


bCarbon

✖


cAcrylic

✖


dPoreclain

✖


View Answer Graphite

The melting point of silver is_____________?


a1063° Centigrade

✖


b960° Centigrade

✓


c850° Centigrade

✖


d1123° Centigrade

✖


View Answer 960° Centigrade

KHN value of Amalgam is_________________?


a90

✓


b343

✖


c67

✖


d450

✖


View Answer 90

Maxwell – Voigt Model is to determine________________?


aElastic Behaviour

✖


bPlastic Behaviour

✖


cViscoelastic Behaviour

✓


dAll of the above

✖



Materials which has high compressive strength and low tensile strength is classified with property of________________?


aDuctility

✖


bBrittleness

✓


cMalleability

✖


dResilient

✖


View Answer Brittleness

The simplest alloy is a_______________?


aSolid solution

✓


bEutectic alloy

✖


cPeritectic alloy

✖


dTernary alloy

✖


View Answer Solid solution

In measuring Vickers hardness no. Which of the following is used________________?


aSpherical indenter

✖


bSteel ball indentation

✖


cRhomboid shaped indenter

✖


d136-degree diamond pyramid

✓



A good adhesive should possess all of the following EXCEPT________________?


aHigh adherend wetting

✖


bHigh contact angle

✓


cLow contact angle

✖


dHigh flow

✖


View Answer High contact angle

Strain is defined as_____________?


aAn applied load or force

✖


bA deformation resulting from an applied load

✓


cAn external force opposing an applied load

✖


dAn internal force opposing an applied load

✖



The modulus of elasticity is defined as_______________?


aThe strain at the proportional limit

✖


bThe stress at the proportional limit

✖


cThe stress/strain ratio within the proportional limit

✓


dNone of the above

✖



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