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What is the principle behind paper chromatography?

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in Food Processing Unit Operations by (110k points)
What is the principle behind paper chromatography?

(a) It is based on partition chromatography

(b) It is based on ions and its charge

(c) It is based on charges only

(d) It is based on ions only

This question was addressed to me in a job interview.

This intriguing question originated from Absorption Mechanisms in division Absorption of Food Processing Unit Operations

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Correct answer is (a) It is based on partition chromatography

The best I can explain: The principle involved in paper chromatography is partition chromatography where the substances are partitioned between liquid phases. One phase is the mobile phase water which moves over the paper and other is the water which is held in the pores of the filter paper used.

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