Tag: polymerisation

Questions Related to polymerisation

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

synthetic polyamides polymerisation chemistry

  1. Condensation polymer

  2. Polyamide

  3. Copolymer

  4. Homopolymer

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Correct Option: D
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

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

synthetic polyamides polymerisation chemistry

  1. van der Waals forces of attraction

  2. hydrogen bonding

  3. three dimensional network of bonds

  4. metallic bonding

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Correct Option: B
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.

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

synthetic polyamides polymerisation chemistry

  1. Teflon

  2. Nylon - $6,6$

  3. Dacron

  4. Bakelite

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Correct Option: A
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.

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

synthetic polyamides polymerisation chemistry

  1. Dacron

  2. Perlon - L

  3. Rayon

  4. None of the above

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Correct Option: B
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.

Which of the following is the biodegradable polymer?

synthetic polyamides polymerisation chemistry

  1. $PHBV$

  2. $Nylon-6,6$

  3. $Nylon-6$

  4. $all$

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Correct Option: A
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.

Which of the following is an optically active polymer -

synthetic polyamides polymerisation chemistry

  1. Nylon $6,6$

  2. Natural rubber

  3. Teflon

  4. $PVC$

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Correct Option: A

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

synthetic polyamides polymerisation chemistry

  1. van der Waals

  2. hydrogen bonding

  3. dipole-dipole interactions

  4. None

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Correct Option: B

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

synthetic polyamides polymerisation chemistry

  1. van der Waals

  2. hydrogen bonding

  3. dipole-dipole interactions

  4. none of the above

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Correct Option: B

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

synthetic polyamides polymerisation chemistry

  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.

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Correct Option: A,C
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.

Which of the following is a common example of fibers?

synthetic polyamides polymerisation chemistry

  1. Bakelite

  2. Buna-S

  3. Nylon - $6,: 6$

  4. Nylon - $6$

Show answer
Correct Option: C
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.