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Test: Classification of Polymers (Old NCERT) - JEE MCQ


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10 Questions MCQ Test - Test: Classification of Polymers (Old NCERT)

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Test: Classification of Polymers (Old NCERT) - Question 1

Which one of the following is not a condensation polymer?

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 1

 

  • Neoprene is not a condensation polymer. It is an addition polymer.
  • Neoprene is made from monomer chloroprene (2-chlorobuta-1,3-diene). 
  • Dacron, Melamine and Glyptal are condensation polymers.
  • Dacron ( also known as terylene) is a polyester made by condensation polymerisation of ethylene glycol and dimethyl terephthalate.
  • Glyptal is a copolymer of ethylene glycol and phthalic acid.
  • Melamine ( or formaldehyde melamine polymer) is obtained from condensation polymerisation of melamine with formaldehyde.
Test: Classification of Polymers (Old NCERT) - Question 2

The weakest inter-particle forces are present in:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 2
  1. ELASTOMERS - The polymer chains are held together by the weakest intermoleculer faces. These weak binding forces permit the polymer to be stretched. 
  2. FIBERS - Fibers have strong intermoleculer forces like hydrogen bonding. These strong forces also lead to close packing of chains and thus impact crystalline nature. 
  3. THERMOPLASTICS - They posses intermoleculer forces of attraction intermediate between elastomers and fibers. 
  4. THEMOSETTING - They are cross linked & heavily launched. 
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Test: Classification of Polymers (Old NCERT) - Question 3

Polymers that are found in nature are called:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 3
  • Natural polymers abound Proteins, starches, carbohydrates, even DNA are natural polymers.

  • A hamburger consists mostly of polymers. The cardboard container the hamburger came in and the napkin used to wipe up any ketchup spills are also made of polymers.
  • Understanding natural polymers' structure, characteristics and uses can help people make environmentally conscious and informed choices. 
Test: Classification of Polymers (Old NCERT) - Question 4

Which polymerisation occurs among the molecules containing double bonds?

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 4
  • Addition polymerization takes place when the monomer molecule contains double carbon bonds, as in alkenes, or triple carbon bonds, as in alkynes.

Addition Polymerisation - Shalom Education

Test: Classification of Polymers (Old NCERT) - Question 5

Cotton is an example of:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 5
  • Cotton is defined as a plant or the soft cloud-like substance that comes from shrubby plants and is used to make thread or cloth.
  • An example of cotton is the stuffing inside a teddy bear.
Test: Classification of Polymers (Old NCERT) - Question 6

A condensation polymer among the following is:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 6

Decron is a condensation polymer. It is formed by the condensation of ethylene glycol and terephthalic acid. 

Test: Classification of Polymers (Old NCERT) - Question 7

Cellulose acetate is a:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 7
  • Perhaps the "semi-synthetic" polymers that was stated in the question refers to this kind of polymers. For example, cellulose acetate is a thermoplastic polymer that is produced from cellulose, a natural polymer, rather than through polymerization reaction of a monomer.
  • Actually, there is no polymerization reaction in the production process of polymer products like cellulose nitrate and other chemical derivatives of cellulose.

So, they can be considered as semi-synthetic polymers.

Test: Classification of Polymers (Old NCERT) - Question 8

Polyacrylonitrile is an example of:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 8
  • Polyacrylonitrile is an example of addition polymer.
  • The addition polymerisation of acrylonitrile in presence of a peroxide catalyst leads to the formation of polyacrylonitrile.

IGTPAN

Test: Classification of Polymers (Old NCERT) - Question 9

The polymers which are prepared in the laboratories are called:

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 9

Synthetic Polymers: Polymers are large molecules composed of repeated chemical units. The smallest repeating unit is called a mer. The term polymer is derived from the Greek words poly and mers meaning "many parts."

Test: Classification of Polymers (Old NCERT) - Question 10

Which of the following is true for the resultant polymer product formed, when molecules of pthalic acid react with molecules of glycerol?

Detailed Solution for Test: Classification of Polymers (Old NCERT) - Question 10
  • The reaction between phthalic acid and glycerol initially results into linear or branched polymer but, due to trifunctionality of glycerol, ultimately cross-linking takes place between the molecules.

What is Cross Linked Shrink Film?

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