HPLC
Which of the following statements is true for a refractive index detector in HPLC?

It does not respond to many solutes
none of above
It is more sensitive than a UV detector
It can only be used for isocratic elutions

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HPLC
HPLC stands for

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

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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
the volume of solvent contained in a liquid chromatographic column
none of these

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

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