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 cube root of the peak width inversely related to the square of the peak width directly 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 inversely related to the square of the peak width ANSWER DOWNLOAD EXAMIANS APP
HPLC An eluotropic series ranks column packing material by their relative abilities to retain solutes on the column None of these is a measure of the solvent adsorption energy 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 None of these is a measure of the solvent adsorption energy ranks solvents by their relative abilities to displace solutes from a given absorbent ANSWER DOWNLOAD EXAMIANS APP
HPLC In reversed phase HPLC, there is a non polar solvent/non-polar column any of the above polar solvent/non-polar column non polar solvent/polar column non polar solvent/non-polar column any of the above polar solvent/non-polar column non polar solvent/polar column ANSWER DOWNLOAD EXAMIANS APP
HPLC HPLC methods include liquid/liquid (partition) chromatography liquid/solid (adsorption) chromatography All of these ion exchange and size exclusion chromatography liquid/liquid (partition) chromatography liquid/solid (adsorption) chromatography All of these ion exchange and size exclusion chromatography ANSWER DOWNLOAD EXAMIANS APP
HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 100 and 150 A° 60 and 100 A° 150 and 200 A° 10 and 50 A° 100 and 150 A° 60 and 100 A° 150 and 200 A° 10 and 50 A° ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following statements is true for a refractive index detector in HPLC? none of above It can only be used for isocratic elutions It does not respond to many solutes It is more sensitive than a UV detector none of above It can only be used for isocratic elutions It does not respond to many solutes It is more sensitive than a UV detector ANSWER DOWNLOAD EXAMIANS APP
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