Question:
Which of the following polymers involves the repeated loss of small molecules at the time of polymerization?
Which of the following polymers involves the repeated loss of small molecules at the time of polymerization?
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Repeated loss of small molecules is a feature of condensation polymerisation.
Updated On: Nov 12, 2026
- Teflon
- Polyacrylonitrile
- Polyester
- High density polythene
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
In condensation polymerisation, monomers join with the repeated loss of small molecules such as water, HCl or alcohol.
Step 2: Addition polymers
Teflon (from tetrafluoroethene), polyacrylonitrile (from acrylonitrile) and HDPE (from ethene) are addition polymers. Their monomers add without losing any molecule.
Step 3: Polyester
A polyester forms from a diol and a dicarboxylic acid, for example ethylene glycol and terephthalic acid giving terylene. One water molecule is lost at each ester link.
Final Answer:
Polyester is formed with repeated loss of small molecules. \[ \boxed{\text{(C) }\text{Polyester}} \]
In condensation polymerisation, monomers join with the repeated loss of small molecules such as water, HCl or alcohol.
Step 2: Addition polymers
Teflon (from tetrafluoroethene), polyacrylonitrile (from acrylonitrile) and HDPE (from ethene) are addition polymers. Their monomers add without losing any molecule.
Step 3: Polyester
A polyester forms from a diol and a dicarboxylic acid, for example ethylene glycol and terephthalic acid giving terylene. One water molecule is lost at each ester link.
Final Answer:
Polyester is formed with repeated loss of small molecules. \[ \boxed{\text{(C) }\text{Polyester}} \]
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