Question: The pure form of gold used in dentistry is known as___________________?

• 1. Cohesive gold
• 2. Non cohesive gold
• 3. Class I casting gold
• 4. Class IV casting gold

Question: Electralloy is an alloy of________________?

• 1. Gold and Platinum
• 2. Cobalt and Chromium
• 3. Gold and Calcium
• 4. Tin and chromium

Question: The carat for Au foil used for restorations is_______________?

• 1. 18
• 2. 20
• 3. 22
• 4. 24

Question: Direct filling gold formed by electrolytic precipitation is called by all the terms EXCEPT______________?

• 1. Crystalline
• 2. Granular gold
• 3. Mat gold
• 4. Sponge gold

Question: When Gold fused with porcelain is fired at very high temperature greenish discoloration of cervical margin is due to________________?

• 1. High firing temperature
• 2. Disintegration of opaque layer
• 3. Presence of copper
• 4. Formation of excess oxides

Question: Powdered gold is___________________?

• 1. Made by a combination of chemical precipitation and atomization
• 2. Made by electrolytic precipitation
• 3. Made by beating pure gold at high temperatures
• 4. Made by milling pure gold ingots

Question: Which of the following is true about direct filling gold______________?

• 1. Properly condensed mat gold has no voids
• 2. Whatever may be the type voids are inherent
• 3. Voids can be avoided with manual condensation
• 4. None of the above

Question: The malleting force is directed______________?

• 1. Perpendicular to the walls
• 2. Parallel to long axis of crown
• 3. 45° to the wall
• 4. None of the above

Question: Pitting of direct filling old restoration usually results from_________________?

• 1. Using contaminated gold foil
• 2. Poor finished preparation
• 3. Improper stepping of condenser point
• 4. Using small condenser point

Question: The cohesive gold used as bulk filler is_____________?

• 1. Electra alloy
• 2. Mat gold
• 3. Spherical gold
• 4. Gold foll