Polymer Technology MCQs

141. Bakelite is a/an

addition polymer
elastomer
thermoplastic
none of these
✅ The correct answer is option D.

146. Silicone is a/an

monomer
inorganic polymer
thermoplastic material
a natural polymer
✅ The correct answer is option B.

147. Pick out the wrong statement regarding the solubility characteristics of high polymers.

Greater the degree of cross-linking in the polymer, lesser is its solubility.
Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents.
Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent.
High molecul ar weight polymers on dissolving gives solution of very low viscosity.
✅ The correct answer is option D.

148. Polyvinyl chloride (PVC) is

a thermosetting material.
a condensation polymerisation product.
made by employing emulsion polymerisation.
none of these.
✅ The correct answer is option C.