Benzoin methyl ether in a polymer indicates that they may be cured in the presence of________________?

Related Mcqs:

1. Polymerisation of heat-cured methyl methacrylate is initiated by______________?

   A. Tertiary amine
   B. Benzoyl peroxide free radical
   C. Hydroquinone
   D. Methyl ether

2. All of the following statements about the differences between self-polymerizing acrylic resins and heat-cured resins are true EXCEPT______________?

   A. The former have a lower molecular weight
   B. The former have higher residual monomer content
   C. The former are more porous
   D. The former have greater transverse strength

3. The % of free monomer in a heat – cured acrylic resin is_______________?

   A. 3% to 5%
   B. 8% to 10%
   C. 0.2% to 0.5%
   D. 0.6% to 0.8%

4. In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon porosity most likely occur_____________?

   A. Throughout the denture
   B. Near the borders
   C. In the thickest part
   D. On the denture surface

5. Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?

   A. Cocci
   B. Spirochetes
   C. Bacteriophages
   D. Filamentous rods

6. A dentist who first used ether as a general antithetic was_____________?

   A. Martin
   B. Morton
   C. Morrison
   D. Murray

7. The advantage of unfilled methyl methacrylate is that______________?

   A. It can be finished smoothly
   B. It has a low degree of flow
   C. It’s non-irritation to pulp
   D. It’s wear resistant is high

8. Hydroquinone is added to methyl methacrylate monomer_________________?

   A. To prevent polymerization during storage
   B. To initiate release of free radicalls
   C. To enable polymerization reaction at room temperature
   D. All of the above

9. Boiling point of methyl methacrylate________________?

   A. B.P of water
   B. < B.P of water
   C. Equal of BP of water
   D. Is at normal room temperature

10. The process wherein two or more chemically different monomers, each with some desirable property, can be combined to yield specific physical properties of a polymer is known as_____________?

    A. Step-growth polymerization
    B. Addition polymerization
    C. Condensation polymerization
    D. Copolymerization