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Polymers

Fill In the Blanks

191.

The monomers of terylene are terephthalic acid and __________.

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192.

Rubber particles are coagulated by adding ________ solution.

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193.

________ and glyptal both are polyesters.

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True Or False

194. State whether the following statements are True or False:

Protein is natural polymer.

Buna-S is a homopolymer.

Neoprene is a synthetic rubber.

Nylon-6,6 is an example of elastomer.

Cotton is an example of natural polyamide fibre.

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195. State whether the following statements are True or False:

Glyptal is a polymer of phthalic acid and ethylene glycol.

Polyethene is a copolymer.

Bakelite is an example of thermoplastic polymer.

Nylon-6 is a polyamide.

Polystyrene is an example of thermoplastic polymer.

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196. State whether the following statements are True or False:

PHBV and nylon-2-nylon-6 are examples of non-biodegradable polymers.

2-chlorobutadiene is the monomer of thiokol.

Nylon fibre does not have drip-dry property.

Natural rubber is a polymer of 2-methy1 butadiene-1, 3.

Buna-N and Buna-S both are synthetic rubber.

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Multiple Choice Questions

197. A molecule with a high molecular mass built up from many identical structural units is called

A polymer
An isomer
A monomer
Gram-molecule

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198.

Select the natural rubber from among the following

Isoprene
Nitrocellulose
Polythene
Bakelite

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199.
Nylon is a co-polymer of

Urea and formaldehyde
Phenol and formaldehyde
Hexamethylene diamine and adipic acid
Styrene and butadiene.

Hexamethylene diamine and adipic acid

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200.

Nylon is

A polyester fibre
A polyamide fibre
A polythene derivative
A polymethyl methylacrylate fibre

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