Polymers

Sponsor Area

Question
CBSEENCH12011398

[NH(CH2)NHCO(CH2)4CO]n

  • co-polymer

  • addition polymer

  • thermosetting polymer

  • homopolymer

Solution

A.

co-polymer

-[NH(CH)2NHCO(CH2)4CO]n- is a copolymer because polymers whose repeating structural units are derived from two or more types of monomer units are called copolymer.
WiredFaculty

Sponsor Area

Question
CBSEENCH12011089

Biodegradable polymer which can be produced from glycine and aminocapric acid is

  • nylon 2-nylon 6

  • PHBV

  • buna -N

  • nylon 6,-6

Solution

A.

nylon 2-nylon 6

Nylon -2- nylon- 6
It is an alternating polyamide of glycine (containing tow carbon atoms ) and amino caproic acid or 6 -amino hexanoic acid. 
WiredFaculty

Question
CBSEENCH12011261

Caprolactam is used for the manufacture of 

  • nylon - 6

  • Teflon

  • terylene

  • nylon-6,6

Solution

A.

nylon - 6

WiredFaculty

Question
CBSEENCH12011040

Natural rubber has

  • All trans-configuration

  • Alternate cis and trans configuration

  • Random cis and trans configuration

  • All cis configuration

Solution

D.

All cis configuration

The repeating unit in natural rubber has the cis-configurations with chain extensions on the same side of the ethylene double bond, which is essential for elasticity. If the configuration is trans, the polymer is hard plastic.
WiredFaculty
All cis-configuration.

Question
CBSEENCH12011137

Nylon  is an example of 

  • Polyester

  • Polysaccharide

  • polyamide

  • polythene

Solution

C.

polyamide

The general structure of any nylon polymer is
WiredFaculty
Because of the presence of amide linkage, nylon belongs to polyamides.

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