Q117 · CSIR-NET Chemistry, December 2013

Paper: CSIR-NET December 2013 · Subject: Physical Chemistry · Chapter: Surface Chemistry · Topic: Surface Chemistry – General · Marks: 2 · Difficulty: Easy

The molecule that has the smallest diffusion coefficient in water is
(a)glucose
(b)fructose
(c)ribose
(d)surcrose
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Diffusion coefficient falls with molecular size (Stokes–Einstein); the disaccharide sucrose is the largest.

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