Question

Which of the following is a natural rubber?

• A. Isoprene
• B. Nitrocellulose
• C. Polyethylene
• D. Bakelite

Hint:

Natural rubber is made by polymerizing isoprene, a natural compound derived from the latex of rubber trees.

Answer 1

The Correct Option is A

Step 1: Understanding natural rubber.
Natural rubber is a polymer made from the monomer isoprene (2-methyl-1,3-butadiene). It is produced by the latex of rubber trees and is known for its elasticity and resilience. Step 2: Analysis of options.
(A) Isoprene: Correct — Isoprene is the monomer that polymerizes to form natural rubber.
(B) Nitrocellulose: Nitrocellulose is a synthetic polymer and is not natural rubber.
(C) Polyethylene: Polyethylene is a synthetic polymer, not a natural rubber.
(D) Bakelite: Bakelite is a synthetic resin, not a natural rubber.
Step 3: Conclusion.
The correct answer is (A) because isoprene is the building block of natural rubber.