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
Related Mcqs:
- 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 - The percentage of copper in high copper alloy is______________?
A. 10-12%
B. 0-6%
C. 13-30%
D. 20-30% - High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?
A. Have less marginal breakdown
B. Are workable at lower Hg-alloy ratio
C. Have a higher ratio of tensile to compressive strength
D. Have less resistance to tarnish and corrosion - Which of the following are characteristic feature of high copper amalgam alloy ?
A. Low compressive strength
B. High marginal breakdown
C. Less marginal #
D. High creep - Admixed high copper alloy powder contains_________________?
A. 9-20% copper
B. 13-20% copper
C. 9-30% copper
D. 13-30% copper - Which of the following silver amalgam alloy have the maximum strength________________?
A. Lathe cut
B. Spherical
C. Admixed
D. Single composition - Discolouration of silver alloy is due to_____________?
A. Tarnish
B. Tarnish and corrosion
C. Wet corrosion
D. Dry corrosion - 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 - 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 - Copper content in low copper amalgam is________________?
A. 6%
B. 12-30%
C. 29%
D. 19%
