Properties of Materials Batch A

   Maximum stress a material can withstand before fracture is called

• Fatigue strength    

• Flexural strength

• Fracture strength

• Ultimate strength

     The stress at which a material exhibits a specific limited deviation from proportionality of stress to strain is

• Proportional limit      

• Tensile strength

• Ultimate strength

• Yield strength

  Modulus of elasticity of a material is indicative of its

• Ductility  

• Malleability

• Plasticity

• Rigidity

  Property of the material, which describes its resistance to abrasion, is

• Flexural strength    

• Hardness

• Modulus of elasticity

• Yield strength

  Which of the following is a micro hardness test ?

• Brinell    

• Knoop

• Rockwell

• Shore-A

A fluid having constant viscosity that does not depend upon the strain rate is said to be

• Newtonian      

• Plastic

• Pseudoplastic

• Viscoelastic

     Compressive stress is computed by dividing the external force by the

• Area of the test specimen 

• Density of the test specimen

• Length of the test specimen

• Strain of the test specimen per unit length

    Two sets of force acting away from each other in a straight line on a body generates

• Compressive stress    

• Flexural stress

• Shear stress

• Tensile stress

Ability of an orthodontic wire to spring back to its original shape is evaluated by

• Brittleness    

• Resilience

• Tensile strength

• Toughness

       Following test is considered as the “gold standard” for testing biocompatibility of dental materials

• Cyotoxicity test    

• Mucous membrane irritatation test

• Skin sensitization test

• Usage test