JEE Main 2021ChemistryPolymersEasyMCQ

JEE Main 2021 — Polymers Question with Solution

JEE Main 2021 (24 Feb Shift 2)

Question

In polymer Buna-S:'S' stands for:

Choose an option

Show full solutionCorrect option: D
Correct answer
DStyrene

Step-by-step explanation

Buna--S, 'S' stand for styrene.

Buna – S is a more commonly used name for a polymer named styrene butadiene rubber. The structure of Buna – S is given by:

Buna – S is formed using the monomers butadiene and styrene.

Thus in Buna – S, the Bu stands for Butadiene, since butadiene is one of the constituent monomers of the given polymer. Also, Na stands for sodium and S represents the monomer Styrene used for the synthesis of the given polymer.

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About this question

This is a previous-year question from JEE Main 2021, 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.