Question:
Identify a step growth polymer from following.
Identify a step growth polymer from following.
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Step-growth polymers form by condensation of two functional groups with loss of a small molecule.
Updated On: Nov 12, 2026
- Bakelite
- Polyethene
- Teflon
- Polyvinyl chloride
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Step-growth (condensation) polymers form by repeated reaction between functional groups, usually with loss of a small molecule such as water.
Step 2: Check the options
Bakelite is made by condensation of phenol and formaldehyde with elimination of water, so it is step-growth.
Polyethene, Teflon and PVC are made by chain-growth addition of ethene, tetrafluoroethene and vinyl chloride.
Step 3: Conclusion
The step-growth polymer is Bakelite.
Final Answer:
Bakelite is the step growth polymer. \[ \boxed{\text{(A) }\text{Bakelite}} \]
Step-growth (condensation) polymers form by repeated reaction between functional groups, usually with loss of a small molecule such as water.
Step 2: Check the options
Bakelite is made by condensation of phenol and formaldehyde with elimination of water, so it is step-growth.
Polyethene, Teflon and PVC are made by chain-growth addition of ethene, tetrafluoroethene and vinyl chloride.
Step 3: Conclusion
The step-growth polymer is Bakelite.
Final Answer:
Bakelite is the step growth polymer. \[ \boxed{\text{(A) }\text{Bakelite}} \]
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