1. Transformation toughening of zirconia occurs due to change in phase from:

Question 1 of 20

2. Effects associated with cold working i.e lowered ductility and distorted grains can be eliminated by process known as

Question 2 of 20

3. When electroplating an impression with copper the cathode is

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4. percentage of phosphoric acid where Dicalcium monophosphate is formed; which cannot be easily removed

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5. When Alginate is mixed with tap water having high calcium sulfate and magnesium, what happens

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6. Brush heap structure is seen in:

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7. Fluid wax impression techniques may use following waxes except

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8. Most common accelerator used in gypsum is:

Question 8 of 20

9. anti rust agent is

Question 9 of 20

10. Stiffness is:

Question 10 of 20

11. Which of the following is formed by spray atomization and chemical precipitation of molten gold

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12. the working time of a phosphate investment mix can be increases by increasing the

Question 12 of 20

13. most common reason for incomplete casting when using a centrifugal casting machine is

Question 13 of 20

14. There are four types of gypsum products approved for use in dentistry. Which of the following types is used rarely today?

Question 14 of 20

15. the restorative material having hardness nearest to that of enamel is

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16. which orthodontic wire shows shape memory

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17. a cermet is a combination of

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18. nickel is added to wrought gold alloys as

Question 18 of 20

19. methyl methacrylate can be activated by all of the following except

Question 19 of 20

20. The chamelon effect has been portrayed by which of the ceramic restorations

Question 20 of 20