Question:
Which of the following compounds is present in natural rubber as a monomer?
Which of the following compounds is present in natural rubber as a monomer?
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Natural rubber is made from polymerizing 2-methyl-1,3-butadiene (isoprene), which is a key monomer in the formation of polyisoprene.
Updated On: Jan 27, 2026
- 1, 3-Butadiene
- 2-Chloro-1,3-butadiene
- Styrene
- 2-Methyl-1,3-butadiene
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the monomer in natural rubber.
Natural rubber is made from polymerizing 2-methyl-1,3-butadiene, also known as isoprene. This monomer undergoes addition polymerization to form polyisoprene, the polymer that makes up natural rubber.
Step 2: Analyzing the options.
(A) 1, 3-Butadiene: This is used in the production of synthetic rubber but is not the monomer in natural rubber.
(B) 2-Chloro-1,3-butadiene: This compound is not used in the production of natural rubber.
(C) Styrene: Styrene is used in the production of polystyrene, not natural rubber.
(D) 2-Methyl-1,3-butadiene: Correct — This is the monomer used in the production of natural rubber.
Step 3: Conclusion.
The correct monomer for natural rubber is (D) 2-Methyl-1,3-butadiene.
Natural rubber is made from polymerizing 2-methyl-1,3-butadiene, also known as isoprene. This monomer undergoes addition polymerization to form polyisoprene, the polymer that makes up natural rubber.
Step 2: Analyzing the options.
(A) 1, 3-Butadiene: This is used in the production of synthetic rubber but is not the monomer in natural rubber.
(B) 2-Chloro-1,3-butadiene: This compound is not used in the production of natural rubber.
(C) Styrene: Styrene is used in the production of polystyrene, not natural rubber.
(D) 2-Methyl-1,3-butadiene: Correct — This is the monomer used in the production of natural rubber.
Step 3: Conclusion.
The correct monomer for natural rubber is (D) 2-Methyl-1,3-butadiene.
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