Pick out the wrong statement regarding the solubility characteristics of high polymers.
A. Greater the degree of cross-linking in the polymer, lesser is its solubility
B. Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents
C. Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent
D. High molecul ar weight polymers on dissolving gives solution of very low viscosity
Answer: Option D
Condensation polymerisation of __________ produces bakelite.
A. Propylene
B. Phenol & formaldehyde
C. Phenol & acetaldehyde
D. Urea & formaldehyde
Polymethyl methacrylate, which is an acrylic resin, is also called
A. Thiokol
B. Plexiglass or lucite
C. Dacron
D. Teflon
A. Improving the stretchability
B. Dyeing/colouring
C. Detergent solution washing
D. Glycol soaking
__________ scrap can be recycled & reutilised.
A. Bakelite
B. Epoxy resin
C. Polythene
D. None of these
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