Tag: polymerisation

Quizzes (2) Questions (39)

Questions Related to polymerisation

Multiple choice synthetic polyamides polymerisation chemistry

Nylon $6$,$6$ is not a :-

  1. Condensation polymer

  2. Polyamide

  3. Copolymer

  4. Homopolymer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chloroprene 
Nylon $6-6$ is formed by hexamethle dlamine and adipic acid so it is copolymer polymer and condensation
$\therefore $ it is not homopolymer

Multiple choice synthetic polyamides polymerisation chemistry

The most important type of forces present in Nylon - $6,6$ is:

  1. van der Waals forces of attraction

  2. hydrogen bonding

  3. three dimensional network of bonds

  4. metallic bonding
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nylon-$6,6$ is a polyamide obtained from the condensation polymerization of adipic acid with hexamethylenediamine.
Nylon-$6,6$ contains hydrogen bonding interactions due to the presence of amide linkages.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following polymers has the empirical formula identical with its monomer?

  1. Teflon
  2. Nylon - $6,6$

  3. Dacron

  4. Bakelite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TEFLON - It is an addition polymer of carbon tetraflouride.
$n CF _{2} = CF _{2} \xrightarrow[High  pressure]{Catalyst} \left [ -CF _{2} - CF _{2}- \right ] _{n}$
                                                    Teflon
$\because $ The shift forming a chain in addition polymer, the empirical formula remains the same.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following is used in making textiles and ropes?

  1. Dacron

  2. Perlon - L

  3. Rayon

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Perlon-L is also known as nylon-$6$. It is obtained by heating caprolactum with water at a high temperature. It is used in making textiles and ropes.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following is the biodegradable polymer?

  1. $PHBV$
  2. $Nylon-6,6$
  3. $Nylon-6$
  4. $all$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

PHBV is common name of Poly $(3-hydroxybutyrate-co-3-hydroxy$ $valerate)$ which is biodegradable, non-toxic, bi compatible plastic produced naturally by bacteria. It is a thermoplastic linear aliphatic polyester.

Multiple choice synthetic polyamides polymerisation chemistry

Inter-particle forces present in Nylon-6,6 are 

  1. van der Waals

  2. hydrogen bonding

  3. dipole-dipole interactions

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nylon 6,6 chains are held together by strong intermolecular hydrogen bonding between the carbonyl oxygen of one chain and the amide hydrogen of another.

Multiple choice synthetic polyamides polymerisation chemistry

Inter-particle forces present in Nylon-6,6 are

  1. van der Waals

  2. hydrogen bonding

  3. dipole-dipole interactions

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nylon 6,6 chains are held together by strong intermolecular hydrogen bonding between the carbonyl oxygen of one chain and the amide hydrogen of another.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following statements are correct about Nylon - $6,: 6$ ?

  1. Nylon fibers have higher tensile strength than teylene fibres.

  2. Nylon fibers have lower tensile strength than terylene fibres.

  3. In nylon, there is strong intermolecular H-bonding, while in terylene there is weak dipole-dipole interaction.

  4. In nylon, there is weak dipole-dipole interaction, while in terylene there is strong intermolecular H-bonding.
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

Nylon - $6,:6$ has high mechanical strength and superior resistance to wear and organic chemicals.
It has more than double the strength and stiffness of unreinforced nylon.
Nylon has $-NH-CO-$ bond which results in intermolecular H-bonding.
Terlyene has no H-bonding and has only weak dipole-dipole interactions and hence, nylon - $6,:6$ has higher tensile strength compared to that of terylene.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following is a common example of fibers?

  1. Bakelite

  2. Buna-S
  3. Nylon - $6,\: 6$
  4. Nylon - $6$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nylon-6,6 (PA66) is semicrystalline polyamide commonly used in fiber applications such as carpeting, clothing, and tire cord. 


It is also used as an engineering material in bearings and gears due to its good abrasion resistance and self-lubricating properties.