The common monomer for both Terylene and Glyptal is
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The Correct Option is A
Approach Solution - 1
Terylene is a polyester formed by the polymerization of terephthalic acid and ethylene glycol. Glyptal is a polymer made from phthalic acid and ethylene glycol. Both of these polymers share ethylene glycol (HO-CH₂-CH₂-OH) as the common monomer.
Step 1: Terylene is formed by the reaction between terephthalic acid (a benzene ring with two carboxyl groups) and ethylene glycol. Glyptal is made from phthalic acid (a benzene ring with a carboxyl group) and ethylene glycol.
Step 2: The common monomer for both Terylene and Glyptal is ethylene glycol, which has the structure HO-CH₂-CH₂-OH. Thus, the correct answer is option (1) HO-CH₂-CH₂-OH.
Approach Solution -2
Terylene and Glyptal are both types of polymers, which are large molecules composed of repeating subunits called monomers. The monomer common to both Terylene and Glyptal is Ethylene glycol. Here is a breakdown of the reasoning:
- Terylene: Also known as polyethylene terephthalate (PET), Terylene is a polyester formed by the polymerization of ethylene glycol and terephthalic acid.
- Glyptal: This is another type of polyester formed by polymerizing ethylene glycol and phthalic anhydride.
The polymerization process for both involves the reaction of ethylene glycol with an acid (or anhydride) resulting in the formation of ester linkages in the polymer chain.
Thus, the common monomer in both Terylene and Glyptal is Ethylene glycol, as identified in the provided options.
| Monomer | Used in |
|---|---|
| Ethylene glycol | Terylene (PET), Glyptal |
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