JEE Main · 2019 · 12 Apr 2019 · Shift 1 · Polymers

Which of the following is a thermosetting polymer?

(A)PVC
(B)Bakelite✓ Correct
(C)Buna- N
(D)Nylon 6

Answer: (B)

Solution

A thermosetting polymer is heavily cross-linked, so once it has set it cannot be softened and remoulded by heating. Among the choices, bakelite, the phenol-formaldehyde resin, has exactly this dense three-dimensional cross-linked network. PVC and nylon-6 are thermoplastics and Buna-N is an elastomer, so the thermosetting one is bakelite.

JEE Main · 2019 · 12 Apr 2019 · Shift 1 · Single correct option

Practise more: all JEE Main PYQs on Polymers →

More JEE Main questions on Polymers

Polymer used in orlon is:
JEE Main 2023View solution →
Buna-S can be represented as:
JEE Main 2023View solution →
The polymer X - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer X is -
JEE Main 2023View solution →
Given below are two statements :

Statements I : Ethene at 333 to 343 K and 6-7 atm pressure in the presence of $AlEt_{3}$ and $TiCl_{4}$ undergoes addition polymerization to give LDP.

Statement II : Caprolactam at 533-543 K in $H_{2} O$ throu …
JEE Main 2023View solution →
Match List I with List II

LIST I (Examples) | LIST II (Type)
A. 2-Chloro-1,3-butadiene | I. Biodegradable polymer
B. Nylon 2-nylon 6 | II. Synthetic Rubber
C. Polyacrylonitrile | III. Polyester
D. Dacron | IV. Addition Polymer

Choose the correct answer from the options given be …
JEE Main 2023View solution →
Match List I with List II:

List I-(Monomer)
(A) Tetrafluoroethylene
(B) Acrylonitrile
(C) Caprolactam
(D) Isoprene

List II-(Polymer)
(i) Orlon
(ii) Natural rubber
(iii) Teflon
(IV) Nylon-6

Choose the correct answer from the options given below:
JEE Main 2023View solution →