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In chromatography, which of the following can the mobile phase be made of?

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In chromatography, which of the following can the mobile phase be made of?

(a) Solid or liquid

(b) Liquid or gas

(c) Gas only

(d) Liquid only

I had been asked this question in an interview for job.

Asked question is from Introduction to Chromatography in chapter Chromatography of Analytical Instrumentation

1 Answer

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Correct choice is (b) Liquid or gas

To explain I would say: In chromatography, the mobile phase can be composed of liquid or gas. It cannot be a solid material.

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