HPLC
In normal phase HPLC, there is a

non polar solvent/non-polar column
any of the above
non polar solvent/polar column
polar solvent/non-polar column

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HPLC
HPLC stands for

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

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HPLC
HPLC methods include

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

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