91.

'Terylene is not a

• copolymer

• polyester fibre

• chain growth polymer

• step growth polymer

Which of the following is not true?

• In vulcanisation, the rubber becomes harder and stronger

• Natural rubber has 'trans' configuration at every double bond

• Buna-S is a copolymer of butene and styrene

• Natural rubber is 1, 4-polymer of isoprene

Which of the following is a polyamide?

• Nylon-6, 6

• Terylene

• Polythene

• Buna - S

Which of the following is not a biodegradable polymer?

• Glyptol

• Polyhydroxy butyrate-CO-β-hyrdoxy valerate

• PHBV

• Nylon 2-nylon-6

A polymer containing nitrogen is :

• bakelite

• dacron

• rubber

• nylon-66

Formation of terylene is an example of:

• condensation polymerisation

• addition polymerisation

• esterification

• saponification

Which of the following is called polyamide ?

• Terylene

• Rayon

• Nylon

• Orlon

Teflon polymer is formed by polymerization of :

• CH₂=CH-CN

• F₂C=CF₂

• Cl₂ = CH₂

• H₂C = CHCl

Which of the following is a condensation polymer?

• [-NH-CO(CH₂)₅-]_n

• Rubber

• Polyvinyl chloride

• Polyethylene

The monomer used in novolac, a polymer used in paints

• melamine and formaldehyde

• phenol and formaldehyde

• butadiene and acrylo nitrile

• butadiene and styrene