Q137 · CSIR-NET Chemistry, December 2019

Paper: CSIR-NET December 2019 · Subject: Physical Chemistry · Chapter: Polymer Chemistry · Topic: Polymer Chemistry – General · Marks: 2 · Difficulty: Medium

In a polymer of N monomer units, the root mean square separation between the two ends is proportional to
(a)$\mathrm{N}^{1 / 2}$
(b)N
(c)$\mathrm{N}^{3 / 2}$
(d)$\mathrm{N}^{2}$
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
For a random-walk chain ⟨r²⟩^{1/2} ∝ N^{1/2}.

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