NEET Chemistry Polymers Questions Solved


The monomer of the polymer

 is :-

(a) 

(b) CH32C=CCH32

(c) CH3CH=CH·CH3

(d) CH3CH=CH2

(a) The monomer of the polymer  is  because it shows cationic polymerisation.

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Which can absorb over 90% of its own mass of water and does not stick to wound ?

(a) Rayon

(b) Gun cotton

(c) Thiokol

(d) Saran

(a) The characteristic of rayon.

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Thermoplastics are:

(a) linear polymers

(b) soften or melt on heating 

(c) molten polymer can be moulded in desired shape

(d) all of the above

(d) These are characteristics of thermoplastics.

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-NHCH26NHCOCH24CO-n is a [2006](a) copolymer(b) additional polymer(c) thermo-setting polymer(d) homopolymer

 

(a)

-NHCH26NHCOCH24CO-n  is a copolymer because polymers whose repeating structural units are derived form two or more types of monomer units are called copolymer

nH2NCH26NH2 + nHOOC(CH2)4COOH -nH2OPolymerisation-[NHCH26NHCO(CH2)4CO]n-

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Which of the following natural products is not a polymer ?

(a) DNA

(b) Cellulose

(c) ATP

(d) Urease

(c) ATP is a monomer molecule

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Synthetic human hair wings are made from a copolymer of vinyl chloride and acrylonitrile and is called:

(a) PVC

(b) polyacrylonitrile

(c) cellulose

(d) dynel

(d) Dynel is a copolymer of vinyl chloride and acrylonitrile.

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Nylon-66 is a polyamide obtained by the reaction of

(a) COOH(CH2)4COOH + H2NC6H4NH2 - (p)

(b) COOH(CH2)4COOH + NH2(CH2)6NH2 

(c) COOH(CH2)4COOH + NH2(CH2)4NH2 

(d) COOHC6H4COOH - (p) + NH2(CH2)6NH2

(b) The monometer units of nylon-66 are obtained by the reaction of hexamethylene diamine and adipic acid.

Nylon-66 contain polyamide bind and show condensation.

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Which one is protein fibre ?

(a) Cotton

(b) Rayon

(c) Silk

(d) Polyster

(c) Silk wool are protein fibre. Cotton rayon is cellulose fibre,

terylene is polyester fibre.

 

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Bakelite is prepared by the reaction between

(a) urea and formaldehyde

(b) ethylene glycol

(c) phenol and formaldehyde

(d) tetramethylene glycol

(c) Bakelite is a polymer obtained by the condensation reaction between phenol and formaldehyde. It is a condensation polymer and basic unit of Bakelite is Novolac.

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Terylene is a condensation polymer of ethylene glycol and

(a) benzoic acid

(b) phthalic acid

(c) salicylic acid

(d) terephthalic acid

(d) Terylene is a condensation polymer of ethylene glycol and terephthalic acid and also called polyster

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