HPLC
HPLC stands for

both (a) and (b)
Highly Placed Liquid Chromatography
High Performance Liquid Chromatography
High Pressure Liquid Chromatography

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HPLC
HPLC methods include

liquid/liquid (partition) chromatography
liquid/solid (adsorption) chromatography
All of these
ion exchange and size exclusion chromatography

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HPLC
Column efficiency is measured in terms of number of plates which is

directly related to the square of the peak width
directly related to the square of the peak width
inversely related to the square of the peak width
inversely related to the cube root of the peak width

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