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

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

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HPLC
An eluotropic series

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

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