is a monomer of
buna-S
teflon
glyptal
nylon-6
Which one of the following statements is not true ?
In vulcanisation, the formation of sulphur bridges between different chains make rubber harder and stronger.
Natural rubber has the trans-configuration at every double bond
Buna-S is a copolymer of butadiene and styrene
Natural rubber is a 1, 4 polymer are given.
Nylon 66 is a polyamide obtained by the reaction of
COOH(CH2)4COOH+H2NC6H4NH2-(p)
COOH(CH2)4COOH+NH2(CH2)6NH2
COOH(CH2)6COOH+NH2(CH2)4NH2
COOHC6H4COOH-(p)+NH2(CH2)6NH2
Structures of some common polymers are given. Which one is not correctly presented ?
Teflon
Neoprene
Terylene
Nylon 66
Natural rubber is a polymer of
butadiene
ethyne
styrene
isoprene
The monomer of the polymer
Which one of the following is used to make 'non-stick' cookware ?
PVC
polystyrene
polyethylene terrephthalate
polytetrafluoro ethlene
Monomer of is
2 - methyl propene
stryrene
propylene
ethene
Acrilon is a hard, horny and a high melting material. Which of the following represents its structure ?
In elastomer, the intermolecular forces are
strong
weak
very strong
none of these
