1) In which of the following properties does a type IV partial denture gold alloy exceed a base-metal partial denture alloy in numerical value
a) hardness.
b) specific gravity.
c) casting shrinkage.
d) fusion temperature.

2) Within practical limits, when the water/ powder ratio is increased beyond the recommended amount in mixing plaster, the
a) setting time is increased.
b) setting expansion is decreased.
c) compressive strength is decreased.
d) all of the above