Which one of the following monomers gives the polymer neoprene on polymerization ?
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
Terylene is a condensation polymer of ethylene glycol and
benzoic acid
phthalic acid
salicylic acid
teraphthalic acid
Natural rubber is a polymer of
butadiene
ethyne
styrene
isoprene
Cellulose is a polymer of
glucose
fructose
ribose
sucrose
Bakelite is prepared by the reaction between
urea and fomaldehyde
ethylene glycol
phenol and formaldehyde
tetramethylene glycol
Monomer of is
2 - methyl propene
stryrene
propylene
ethene
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.
Which one of the following is used to make 'non-stick' cookware ?
PVC
polystyrene
polyethylene terrephthalate
polytetrafluoro ethlene
In elastomer, the intermolecular forces are
strong
weak
very strong
none of these
