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Pick the odd one out.

(a) Gel filtration

(b) Gel permeation chromatography

(c) Ion-exchange chromatography

(d) Restricted-diffusion chromatography

The question was asked in an interview.

My question is based upon Enzymes Purification topic in division Enzymes Purification of Enzyme Technology

1 Answer

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Best answer
Correct answer is (c) Ion-exchange chromatography

The explanation is: Ion exchange chromatography is the odd one out. As gel filtration, gel permeation and restricted-diffusion chromatography are one and the same. It is a liquid column chromatographic method of separating solute molecules according to their size.

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