Question

-(03)
Q.No.6 Match the following
Name of monomer
Polymer
1. Backelite. a.isoprene
2. Polyester. b.c6h5oh and hcho
3. Natural rubber. c.ethylene glycol & tetrapthalic aci
4. Orion. d.CF=CF2
5. Teflon. e.CH=CHCN
6. Neoprene. f. Chloroprene
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Answer 1

Answer:

ANSWER

Melamine formaldehyde polymer- (iv) melamine+formaldehyde

Bakelite - (i) phenol + formaldehyde

Neoprene - (ii) 2-chloro 1,3 butadiene (Chloroprene)

Natural rubber - (iii) 2-methyl 1,3 butadiene (isoprene)

Formation of phenol-formaldehyde polymer-

These are obtained by the condensation reaction of phenol with formaldehyde in the presence of either an acid or a base catalyst. The reaction starts with the initial formation of o-and/or p-hydroxymethyl phenols derivatives, which further react with phenol to form compounds having rings joined to each other through –CH

2

groups. The initial product could be a linear product like novolac.

The correct option is [C].

solution