Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE

JEE: Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE

The document Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE is a part of the JEE Course Mock Test Series for JEE Main & Advanced 2022.
All you need of JEE at this link: JEE

Question 1: The correct functional group X and the reagent/reaction conditions Y in the following scheme are    (IIT-JEE 2011)
Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE
(a) X = COOCH3, Y = H2/Ni/heat
(b) X = CONH2, Y = H2/Ni/heat
(c) X = CONH2, Y = Br2/NaOH
(d) X = CN, Y = H2/Ni/heat
Answer: a,b,c,d
Solution:
Condensation polymers are formed by condensation of diamine or diols with dicarboxylic
acids.
So, X may be  -COR, -CONH2, -CN
Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE

Question 2:
a) What is the structure of nylon-6, made by alkaline polymerisation of caprolactam?
Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE
b) Suggest a mechanism for the process. Is polymerisation of the chain reaction or step reaction type?
Solution:
Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE
The reaction is anionic chain reaction polymerization, involving nucleophilic substitution at the acyl group of the cyclic amide. The base could be OH– itself or the anion formed by abstraction of the –NH proton from a molecule of lactam.

Question 3: Identify the compound C
Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE
Solution:

Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE

The document Solved Examples: Polymers Notes | Study Mock Test Series for JEE Main & Advanced 2022 - JEE is a part of the JEE Course Mock Test Series for JEE Main & Advanced 2022.
All you need of JEE at this link: JEE

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