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

Select the correct statement for thermoplastic polymer.

• It does not become soft on heating under pressure

• It cannot be remoulded

• It is either linear or branched chain polymer

• It is a cross- linked polymer.

27.

The monomers used in preparation of dextron are

• lactic acid and glycollic acid

• 3-hydroxy butanoic acid and 3-hydroxy pentanoic acid

• styrene and 1, 3-butadiene

• hexamethylenediamine and adipic acid

The polymer used in making handles of cookers and frying pans is

• bakelite

• nylon-2-nylon-6

• orion

• polyvinyl chloride

Which one of the following monomers form biodegradable polymer?

• Urea and formaldehyde

• Ethylene glycol and terephthalic acid

• 3-hydroxybutanoic and 3-hydroxypentanoic acid

• Phenol and caproic acid

Novlac, the linear polymer used in paints is

• copolymer of 1,3-butadiene and styrene

• obtained by the polymerization of methyl methacrylate

• nitial product obtained in the condensation of phenol and formaldehyde in the presence of acid catalyst

• obtained by the polymerisation of caprolactam