Can You Pass This Science MCQ Quiz?

20 Questions

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Can You Pass This Science MCQ Quiz?

Can you pass this science MCQ quiz? It will be clear once you will face questions from various science topics such as materials, elasticity, dentistry, etc. Let's see if you stand still like a tree or fall like a leaf. All the best!


Questions and Answers
  • 1. 
    Elasticity is an example of which of the following properties?
    • A. 

      Physical

    • B. 

      Mechanical

    • C. 

      Chemical

    • D. 

      Biologic

  • 2. 
    An example of a physical property is:
    • A. 

      Density

    • B. 

      Strength

    • C. 

      Stiffness

    • D. 

      Corrosion

  • 3. 
    The ability of a material to dissolve in liquid is termed:
    • A. 

      Viscosity

    • B. 

      Water sorption

    • C. 

      Solubility

    • D. 

      Wetting

  • 4. 
    The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its__________________?
    • A. 

      Resilience

    • B. 

      Hardness

    • C. 

      Strain

    • D. 

      Elasticity 

  • 5. 
    Property of the material, which describes the resistance to abrasion, is_________________?
    • A. 

      Hardness

    • B. 

      Strength

    • C. 

      Elasticity

    • D. 

      None of the above

  • 6. 
    Stress in defined as_______________?
    • A. 

      An applied load or force

    • B. 

      A deformation resulting from an applied load

    • C. 

      An external force opposing an applied load

    • D. 

      An internal force opposing an applied load

  • 7. 
    Hardness number measured by_____________?
    • A. 

      BNH

    • B. 

      RNH

    • C. 

      VNH

    • D. 

      KNH

  • 8. 
    Strain is defined as:
    • A. 

      An applied load or force

    • B. 

      A deformation resulting from an applied load

    • C. 

      An external force opposing an applied load

    • D. 

      An internal force opposing an applied load

  • 9. 
    The KHN of enamel is:
    • A. 

      70

    • B. 

      350

    • C. 

      450

    • D. 

      150

  • 10. 
    Goal of dentistry:
    • A. 

      Preventing disease

    • B. 

      Relieving pain

    • C. 

      Improving mastication efficiency

    • D. 

      All of the above

  • 11. 
    ___________ is the force per unit area induced in the material in response to externally applied force, one part of the force is in one direction while the other is in the opposite direction.
    • A. 

      Shear stress

    • B. 

      Compressive stress

    • C. 

      Tensile stress

    • D. 

      None of the above

  • 12. 
    There is a lot of materials have ideal physical and mechanical properties.
    • A. 

      True

    • B. 

      False

  • 13. 
    Dental materials play an integral role in dentistry.
    • A. 

      True

    • B. 

      False

  • 14. 
    1. Every ________ is accompanied by a strain of the same type
    • A. 

      Density

    • B. 

      Strength

    • C. 

      Stress

    • D. 

      Stiffness

  • 15. 
    1. ___________include materials used to repair or replace tooth structure
    • A. 

      Preventive Materials

    • B. 

      Restorative Materials

    • C. 

      Auxiliary Materials

    • D. 

      None

  • 16. 
    Materials that are tooth-colored are often called esthetic materials
    • A. 

      True

    • B. 

      False

  • 17. 
    1. In the _________ type of corrosion, the metal reacts to form oxides and sulfides in the absence of electrolytes
    • A. 

      Chemical or dry corrosion

    • B. 

      Electrolytic

    • C. 

      Electrochemical

    • D. 

      Wet corrosion

  • 18. 
    Tarnish generally occurs in the oral cavity due to:
    • A. 

      Formation of hard & soft deposits on the surface of the restoration, e.g., calculus, mucin & plaque.

    • B. 

      Pigment producing bacteria, produce stains.

    • C. 

      Formation of thin films of oxides, sulfides or chlorides

    • D. 

      All of the above

  • 19. 
    1. A systemic effect is a result of the direct contact of the material to the regions immediately adjacent to the material.
    • A. 

      True

    • B. 

      False

  • 20. 
    1. The __________ properties dependent on the amount of material & on the size & shape of the object.
    • A. 

      Physical

    • B. 

      Chemical 

    • C. 

      Mechanical 

    • D. 

      Biologic

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