Bakelite is polymer of phenol and
HCOOH
HCOOCH3
HCHO
CH3COOH
C.
HCHO
Phenol formaldehyde polymers are the oldest synthetic polymers. These are obtahled by condensation of phenol with formaldehyde in the presence of either an acid or a base catalyst.
The condensation of p-hydroxybenzyl alcohol or p-hydrony benzylalcohol gives a linear
polymer.
The o-and p-substituted phenols can undergo cross linkage to form an infusible solid called bakelite.
Bakelite is the condensation polymer of
C6H5OH and caprolactum
HCHO and phthalic acid
C6H5OH and HCHO
HCHO and ethylene glycol
Select the correct statement
Orlon is an addition polymer
Dacron is an addition polymer
Orlon is a condensation polymer
The monomers of orlon is styrene
Which one of the following monomers gives the polymer neoprene on polymerisation?
CH2=CH-Cl
CCl2=CCl2
CH2=CCl-CH=CH2
CF2=CF2
The hard plastic covers of telephones are made from polymers of
acrylonitrile
styrene
fluoromethane
phenol and formaldehyde
Natural rubber is a polymer of monomer isoprene. During polymerisaton
1, 4 addition takes place
1, 2 addition takes place
1,3 addition takes place
both double bonds are converted into single bond