The process of changing the rubber base product or liquid polymer, to a rubber like material is generally known as_____________?

Related Mcqs:

1. 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

2. The cross linking agent of polysulphide rubber base impression material is______________?

   A. Aromatic sulfonate esters
   B. Stannous octate
   C. Platinum salt catalyst
   D. Lead dioxide

3. Rubber base impressions are poured immediately as they_______________?

   A. Continue to polymerize
   B. Become elastic
   C. Show imbibition and syneresis
   D. Show gelation

4. Dimensional stability of elastomeric impression material can be given in descending order as_____________?

   A. Polysulphide > polyether > Condensation silicone > Addition silicone
   B. polyether > Condensation silicone > Polysulphide > Addition silicone
   C. Addition silicone > polyether > Polysulphide > Condensation silicone
   D. Addition silicone> Condensation silicone > Polysulphide > polyether

5. The greatest stress which may be produced in a material such that stress is directly proportional to the strain is know as_____________?

   A. The elastic limit
   B. The proportional limit
   C. The yield strength
   D. Modulus of elasticity

6. Streptococcus mutans produces an adhesive polymer from sucrose, known as:__________?

   A. Levans
   B. Lectins
   C. Glucans
   D. Polyfructans

7. The accepted polymer to monomer ratio for packing of polymethyl methacrylate resin is____________?

   A. 3:1
   B. 4:1
   C. 10:1
   D. 5:1

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

   A. UV light
   B. Visible light
   C. Infrared light
   D. Diketone

9. Deformation that is recovered upon removal of an externally applied force or pressure is known as_____________?

   A. Young’s modulus
   B. Plastic strain
   C. Elastic strain
   D. Flexural strain

10. By product of condensation reaction between silicone base and alkyl silicate in presence of tin octate_______________?

    A. Ethyl alcohol
    B. Glycol
    C. Acetate
    D. Propanolol