Q20 / 90 · JEE Main 2023 (10 Apr Shift 1) · Chemistry

Match List-I with List-II.

  List-I Polymer   List-II Type/Class
A. Nylon-2-Nylon-6 I. Thermosetting polymer
B. Buna-N II. Biodegradable polymer
C. Ureaformaldehyde resin III. Synthetic rubber
D. Dacron IV. Polyester

Choose the correct answer from the options given below:

  • A
    A→IV; B→I; C→II; D→II
  • Correct answer
    B
    A→II; B→III; C→I; D→IV
  • C
    A→IV; B→III; C→I; D→II
  • D
    A→II; B→I; C→IV; D→III

Solution

Thermoset plastics retain their form and stay solid under heat once cured. Urea-formaldehyde is an example of thermosetting polymer. Polymers which disintegrate by themselves over a period of time due to environmental degradation by bacteria etc. are called biodegradable polymers. Nylon-2-nylon-6 is an example of biodegradable polymer. Any artificial elastomer is referred to as synthetic rubber. Buna-N is an example of synthetic rubber. Polyester is a synthetic or man-made fiber material. Dacron is an example polyester.

Hence, the correct answer is option: 'B'.

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