Terylene is the polyester of

• hexamethylene diamine and adipic acid

• vinyl chloride and formaldehyde

• melamine and formaldehyde

• ethylene glycol and terephthalic acid

Adipic acid is used in the preparation of

• nylon-6

• dacron

• nylon-66

• novolac

Terylene is a polymer obtained from

• ethylene glycol and glycerol

• ethylene glycol and glyceraldehyde

• ethylene glycol and terephthalic acid

• None of the above

274.

Rayon is

• natural silk

• artificial silk

• regenerated fibre

• synthetic fibre

For the formation of terylene the number of moles of ethylene glycol required per mole of terephthalic acid is

• 1

• 2

• 3

• 4

Ziegler-Natta catalyst catalyses preparation of which of the following compounds?

• Preparation of Ti-metal

• Preparation of low density plastic

• Preparation of high resistance plastic

• Preparation of high density plastic

The natural rubber is the polymer of

• 1, 3-butadiene

• polyamide

• isoprene

• None of these

Nylone-66 is a

• polyester

• polyamide

• polyacrylate

• None of the above

Identify the heteropolymer from the list given below.

• Polythene

• Nylon-6

• Teflon

• Nylon-6 6

Which polymer among the following does not soften on heating?

• Bakelite

• Polythene

• Polystyrene

• PVC