HPLC
An isocratic elution in HPLC is one in which the composition of the solvent

none of these
changes in a series of steps
remains constant
changes continuously

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HPLC
An eluotropic series

ranks column packing material by their relative abilities to retain solutes on the column
None of these
ranks solvents by their relative abilities to displace solutes from a given absorbent
is a measure of the solvent adsorption energy

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HPLC
Dwell volume is defined as

the time required for the gradient to reach the column
the volume of the column between the point at which solvents are mixed and the beginning of the column
none of these
the volume of solvent contained in a liquid chromatographic column

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

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HPLC
HPLC stands for

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

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