Tag: types of polymerisation reactions

Questions Related to types of polymerisation reactions

Terylene is a condensation polymer of ethylene glycol and:

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. benzoic acid

  2. phthalic acid

  3. terephthalic acid

  4. salicylic acid

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Correct Option: C
Explanation:

Terylene is a condensation polymer of ethylene glycol and terephthalic acid,

it is the product of condensation polymerisation, this type of polymerisation generally involves a repetitive condensation reaction between two bi-functional monomers and lead to the formation of high molecular mass condensation polymers.
The correct option is [C].

Which of the following is not true about polymers?

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. Polymers are high molecular mass macro-molecules.

  2. Polymers may be of natural or synthetic origin.

  3. Condensation polymers are made up of one type of monomers only.

  4. They have high viscosity and do not carry any charge.

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Correct Option: C
Explanation:

A) Polymers are high molecular mass macro-molecules made with a large number of repeating subunits.

B) Naturally occurring polymers - Silk, Wool, DNA, etc.
Synthetic polymers- Nylon, Polyethylene, Polyester etc. 
C) Two bi-functional monomers are used in condensation polymerisation,
Example Nylon-6,6 is the polymer of Hexamethylenediamine + adipic acid

So this statement is false.

D) Polymers are large chain molecules so they have high viscosity. Since monomers of polymers are neutral, the overall polymer is also neutral.

$X-(CH _2) _4-X \xrightarrow [{HOOC-(CH _2) _4-COOH}] {Y}:Condensation : Polymer$


The correct functional group $X$ and the reagent/reaction conditions $Y$ in the following scheme are:

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. $X=COOCH _{3},\ Y=H _{2}/Ni/heat$

  2. $X=CONH _{2},\ Y=H _{2}/Ni/heat$

  3. $X=CONH _{2},\ Y=Br _{2}/NaOH$

  4. $X=CN,\ Y=H _{2}/Ni/heat$

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Correct Option: C,D

 Which of the following is condensation polymer? 

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. Polypropylene

  2. PMMA

  3. Glyptal

  4. Teflon

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Correct Option: A

Synthetic fiber does not obtained from renewable resources is : 

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. Nylon

  2. Polyester

  3. Rayon

  4. Acrylic

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Correct Option: C
Explanation:

Synthetic fibres are manufactured using plant materials and minerals. 


Viscose comes from pine trees or petrochemicals, while acrylic, nylon and polyester come from oil and coal. 

Viscose fibre is obtained from the cellulose; versatility allows imitating materials such as cotton or silk.

Rayon is a manufactured fiber made from natural sources such as wood and agricultural products that are regenerated as cellulose fiber. 

The many types and grades of rayon can imitate the feel and texture of natural fibers such as silk, wool, cotton, and linen.

Therefore, option C is correct.

Regenerated fibres have superior physical properties because

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. they are fresh fibres

  2. they are obtained naturally

  3. they are chemically treated fibres

  4. None of the abvoe

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Correct Option: C
Explanation:

Regenerated fibre is created by dissolving the cellulose area of plant fibre in chemicals and making it into fibre  again.It consists of cellulose like cotton and hemp  so it is called as regenerated cellulose fibre.

Bakelite is formed by:

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. polymerization of phenol and formaldehyde

  2. polymerization of alcohol and acetaldehyde

  3. condensation of phenol and formaldehyde

  4. condensation of phenol and acetaldehyde

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Correct Option: C
Explanation:

Bakelite is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde.


Hence, option C is correct.

Which of the following monomers are unsuitable for condensation polymerization?

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. hydroxy acids

  2. butane-dioic acid and glycol

  3. diamines and dicarboxylic acids

  4. propanoic acid and ethanol

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Correct Option: D
Explanation:

Propanoic acid and ethanol, both are monofunctional monomers $ CH _3-CH _2- OH , CH _3-CH _2COOH$ which are not suitable for a polycondensation reaction to take place because once they combine by condensation polemerisation further polymerisation is not possible.

Which of the following is not correct regarding terylene?

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. Step - growth polymer

  2. Synthetic fiber

  3. Condensation polymer

  4. Dacron

  5. Thermosetting plastic

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Correct Option: E

Which of the following is an example of condensation polymer?

types of polymerisation reactions condensation polymerisation polymer polymers chemistry

  1. Teflon

  2. Melamine

  3. Nylon-6

  4. BUNA-S

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Correct Option: B