Silicone is a/an ___________________?

Related Mcqs:

1. Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?

   A. As room temperature adhesive
   B. As grease & lubricant
   C. Hydraulic fluid for heat transfer
   D. Resin for lamination

2. The rate controlling step in the manufacture of silicone rubber is the_________________?

   A. Polymer termination step
   B. Condensation of siloxane to silicone
   C. Initial hydrolysis of silicone monomer
   D. None of these

3. Dacron is a/an ___________________?

   A. Polyester
   B. Unsaturated polyester
   C. Polyamide
   D. Inorganic polymer

4. In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?

   A. Densities
   B. Melting point
   C. Tensile strength
   D. Hardness, rigidity & brittleness

5. Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________?

   A. Electrical insulation purpose
   B. Tanning of leather
   C. Strengthening of plaster of Paris
   D. Decorative laminates

6. Polycondensation reaction of polymerisation ___________________?

   A. Does not produce linear polymers
   B. Produces only thermoplastic material
   C. Produces epoxy polymers
   D. Does not need any catalyst

7. Poly-methyl-methacrylate, which is an acrylic resin, is also called ___________________?

   A. Thiokol
   B. Plexiglass or Lucite
   C. Dacron
   D. Teflon

8. In condensation polymerisation as compared to addition polymerisation____________________?

   A. The monomers are unsaturated compounds
   B. No co-product is lost
   C. The monomers contain two functional groups
   D. Generally only one monomer is involved

9. Which of the following is not a condensation polymer ?

   A. Bakelite
   B. Melamine polymer
   C. Poly-methyl-methacrylate (PMMA)
   D. None of these

10. Bakelite (phenol-formaldehyde) resin cannot be used as________________?

    A. Decorative paint
    B. Decorative laminates
    C. Electrical insulation
    D. Glass reinforced plastics