Question: Compare to conventional amalgams, spherical amalgams_______________?

• 1. Require more mercury
• 2. Require heavy compection forces
• 3. Have longer setting times
• 4. None of the above

Question: Which of the following phases of dental amalgam has minimum strength____________?

• 1. Gamma 1
• 2. Gamma 2
• 3. Epsilon 1
• 4. Gamma 3

Question: The ADA specification No 1 for composition of amalgam alloy recommends______________?

• 1. 65% silver, 32% tin and 3% copper
• 2. 49% silver, 32% tin and 19% cooper
• 3. 65% silver, 29% tin and 5-6% copper
• 4. None of the above

Question: The highest mercury concentration in amalgam filling is found_____________?

• 1. At the margin of the restoration
• 2. In the centre of the restoration
• 3. In the deepest part of the restoration
• 4. None of the above

Question: The term trituration means____________?

• 1. Lysing amalgam alloy
• 2. Mixing of amalgam alloy and mercury
• 3. Removal of excess of mercury
• 4. None of the above

Question: White gold alloy predominantly is______________?

• 1. Gold added with palladium
• 2. Gold added with calcium
• 3. Gold with much of chromium
• 4. Gold with silver

Question: In type II gold alloys _______ Karat gold is used?

• 1. 24 K
• 2. 22 K
• 3. 18 K
• 4. 10 K

Question: The material used in its pure form in dentistry is______________?

• 1. Composite
• 2. Silver
• 3. Gold
• 4. Amalgam

Question: Cohesion of gold foil is an example of______________?

• 1. Atomic attraction and welding
• 2. Annealing
• 3. Wedging
• 4. Adaptation

Question: Average particle size of powdered gold is________________?

• 1. 10 um
• 2. 15 um
• 3. 30 um
• 4. 0.1 um