What kind of intermediate is formed in the polymerization

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Reference no: EM13162052

1) What type of intermediate is formed in the polymerization of styrene with butllithium?

a) radical
b) carbanion
c) carbine
d) carbocation

2) Which of the following is not a copolymer?

a) ABS
b) butyl rubber
c) saran
d) poly (ethylene terephthalate)

3) Which of the following polymers is prepared from moe than one monomer?

a) poly(methyl alpha-cyanoacrylate)
b) pol(ethylene terephthalate)
c) UHMWPE
d) nylon 6

4)Which of the following combinations of terms best describes the polymerization of a diol and a diacid to form a polyester?

a) step growth condensation
b) step growth addition
c) chain growth addition
d) chain growth condensation

5) Which of the folowing statements is not true?

a) Thermoplastic polymers can be melted.
b) Crystalline polymers are moe opaque than amorphous polymers
c) Elastomers are elastic below Tg.
d) Polymers become flexible above their Tg.

Reference no: EM13162052

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