19.
Which of the following is the least likely to tarnish or corrode in the mouth?
a. Silver.
b. Gold.
c.
Amalgam.
20.
Is chromium alloy a controlled item subject to strict accountability?
a. Yes.
b. No.
21.
How many carats are there in a gold alloy that is 750 fine?
a. 24.
b. 21.
c.
18.
d. 15.
e. 12.
22.
In the troy system of weight, how many grains are there in gold that weighs
1/2 ounce?
a. 720.
b. 460.
c.
240.
d. 120.
MD0502
2-14