22798.Thermosetting polymer, Bakelite is formed by the reaction of phenol with
HCOOH
CH3CH2CHO
CH3CHO
HCHO
22799.Of the following which one is classified as polyester polymer?
Nylon–66
Terylene
Backelite
Melamine
22801.The monomers of Buna–S rubber are
styrene and butadiene
isoprene and butadiene
vinyl chloride and sulphur
butadiene
22802.Which one of the following polymers is prepared by condensation polymerization?
Teflon
Rubber
Styrene
Nylon–6,6
22806.The two monomers used in the preparation of dextron are
3–hydroxy butanoic acid and 3–hydroxy pentanoic acid
ε–aminocaproic acid and glycine
Isobutylene and isoprene
Lactic acid and glycolic acid
22807.Nylon threads are made of
polyethylene polymer
polyvinyl polymer
polyester polymer
polyamide polymer
22808.Which of the following monomers gives the polymer neoprene on polymerization?
CH2 = CHCl
CCl2 = Cl2
CF2 = CF2
22809.The monomers of Buna–S rubber are
vinyl chloride and sulphur
butadiene
styrene and butadiene
isoprene and butadiene
22810.Polymer formation from monomers starts by
condensation reaction between monomers
coordination reaction between monomers
conversion of monomers to monomer ion by protons
hydrolysis of monomers
22811.Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is
RSiCl3
R2SiCl2
R3SiCl2
R4Si
22812.Plexiglass is a commercial name of
glyptal
polyacrylo nitrile
polymethyl methacrylate
polyethyl acrylate
22814.Given the polymers: A = Nylon; B = Buna–S; C = Polythene. Arrange these in decreasing order of their intermolecular forces.
A > B > C
B > C > A
B < C < A
C < A < B