JEE Main 2023 — Polymers Question with Solution
From: JEE Main 2023 (Online) 11th April Morning Shift
Question
The polymer - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer is-
Choose an option
Show full solutionCorrect option: A
Step-by-step explanation
The polymer X described in the question is synthesized using triethylaluminium and titanium tetrachloride under low pressure. This is a clear indication that the Ziegler-Natta catalyst is used, which is typically employed in the synthesis of high-density polyethylene (HDPE).
High-density polyethylene is made up of linear molecules that pack closely together, giving the material its high density. This is in contrast to low-density polyethylene (LDPE), which has a branched structure that prevents the chains from packing closely together.
So, the polymer X is :
Option A: High-density polyethylene.
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This is a previous-year question from JEE Main 2023, covering the Polymers chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.