The solid solution of silver and mercury is called_______________?

Related Mcqs:

1. Increase in the residual mercury in silver amalgam filling can_____________?

   A. Cause fracture of the filling
   B. Tarnish and corrosion
   C. Increase the strength
   D. Decrease condensation pressure

2. Which phase provides maximum strength in hardened mercury/silver alloy ?

   A. Silver / Mercury phase
   B. Silver / Tin phase
   C. Tin / Mercury phase
   D. Zinc / Mercury phase

3. Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?

   A. It has increased tensile and compressive strength
   B. It has poor tarnish and corrosion resistance
   C. It’s edge strength is greater
   D. Mercury content in the final restoration is less

4. Discolouration of silver alloy is due to_____________?

   A. Tarnish
   B. Tarnish and corrosion
   C. Wet corrosion
   D. Dry corrosion

5. Which of the following silver amalgam alloy have the maximum strength________________?

   A. Lathe cut
   B. Spherical
   C. Admixed
   D. Single composition

6. The tarnished layer of silver amalgam consists of________________?

   A. Sulphides of silver
   B. Oxides of tin
   C. Chlorides of tin
   D. All of the above

7. Over-trituration of silver alloy and mercury_______________?

   A. Reduces contraction
   B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
   C. Decreases creep
   D. Gives al dull and crumbly amalgam

8. Which is true regarding lathe cut silver alloy_______________?

   A. Requires least amount of mercury
   B. Achieves lowest compressive strength at 1 hr.
   C. Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy
   D. Has low creep

9. Which of the following statement is true regarding lathe cut low Copper silver alloy ?

   A. Requires least amount of mercury
   B. Achieves high compressive strength at 1 hr.
   C. Has tensile strength both at 15 minutes and 7 days is comparable to high copper, unicompositional alloys
   D. Has lower cree value

10. According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be________________?

    A. 80 Mpa
    B. 140 Mpa
    C. 260 Mpa
    D. 510 Mpa