Which of the following hardness test is a micro hardness test ?

Related Mcqs:

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

   A. Spherical indenter
   B. Steel ball indentation
   C. Rhomboid shaped indenter
   D. 136-degree diamond pyramid

2. Antibiotic sensitivity and resistance of micro organisms is determined by________________?

   A. Direct microscopy
   B. Culture
   C. ELISA
   D. DNA probe

3. Some micro organisms produce a diffuse spreading inflammatory reaction due to the elaboration of____________?

   A. Coagulase
   B. Peroxidase
   C. Bradykinin
   D. Hyaluronidase

4. 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

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

   A. KNH
   B. VHN
   C. RHN
   D. BHN

6. 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

7. By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?

   A. Ag
   B. Zn
   C. Cu
   D. Hg

8. The relative hardness of elastomere is determined using________________?

   A. Rockwell tester
   B. Barcol indenter
   C. Knoop pyramid
   D. Shore durometer

9. Hardness of fully mineralized cementum is_____________?

   A. Less than dentin
   B. More than dentin
   C. Equal dentin
   D. None of the above

10. Biuret test is confirmatory test for_______________?

    A. Protein
    B. Fat
    C. Carbohydrate
    D. None of the above