Polymers

NEET Chemistry · 72 questions · Page 2 of 8 · Click an option or "Show Solution" to reveal answer

Q11

Which of the following statements is false?

A Artificial silk is derived from cellulose.

B Nylon-6, 6 is an example of elastomer.

C The repeat unit in natural rubber is isoprene.

D Both starch and cellulose are polymers of glucose.

Correct Answer

Option B

Solution

Nylon 6, 6 is an example of fibers.

Q12

Which one of the following is not a condensation polymer?

A Melamine

B Glyptal

C Dacron

D Neoprene

Correct Answer

Option D

Solution

Neoprene is made by joining smaller molecules together without losing any atoms.

This process is called addition polymerization.

Condensation polymers are made when small molecules, like water, are released during the reaction.

Neoprene does not form this way.

So, Neoprene is not a condensation polymer.

Q13

Of the following which one is classified as polyester polymer?

A Terylene

B Bakelite

C Melamine

D Nylon-6,6

Correct Answer

Option A

Solution

Terylene (Dacron) is a polyester polymer.

Q14

Which one of the following statements is not true?

A Buna-S is a copolymer of butadiene and styrene.

B Natural rubber is a, 1,4-polymer of isoprene.

C In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger.

D Natural rubber has the trans -configuration at every double bond.

Correct Answer

Option D

Solution

Natural rubber is cis-1, 3 polyisoprene and has only cis-configuration about the double bond.

Q15

Which one of the following polymers is prepared by condensation polymerisation?

A Teflon

B Natural rubber

C Styrene

D Nylon-6,6

Correct Answer

Option D

Solution

Nylon-6,6 is a condensation polymer of adipic acid and hexamethylene diamine.

Q16

is a

A homopolymer

B copolymer

C addition polymer

D thermosetting polymer.

Correct Answer

Option B

Solution

It is formed by the condensation of adipic acid and hexamethylene diamine. It is a copolymer.

Q17

Which one of the following is a chain growth polymer?

A Starch

B Nucleic acid

C Polystyrene

D Protein

Correct Answer

Option C

Solution

Polystyrene is a chain growth polymer.

Q18

Which one of the following monomers gives the polymer neoprene on polymerization?

A CH 2

=

CHCl

B CCl 2

=

CCl 2

D CF 2

=

CF 2

Correct Answer

Option C

Solution

Chloroprene (2-chloro-1, 3-butadiene) on addition polymerisation gives neoprene.

Q19

Cellulose is polymer of

A glucose

B fructose

C ribose

D sucrose.

Correct Answer

Option A

Solution

Cellulose is a straight chain polysaccharide composed of D-glucose units joined by $\beta$ -glycosidic linkage.

Q20

Monomer of is

A 2-methylpropene

B styrene

C propylene

D ethene

Correct Answer

Option A

Solution

Monomer of is 2-methylpropene.

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