HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 100 and 150 A° 150 and 200 A° 10 and 50 A° 60 and 100 A° 100 and 150 A° 150 and 200 A° 10 and 50 A° 60 and 100 A° ANSWER DOWNLOAD EXAMIANS APP
HPLC In normal phase HPLC, there is a non polar solvent/non-polar column non polar solvent/polar column polar solvent/non-polar column any of the above non polar solvent/non-polar column non polar solvent/polar column polar solvent/non-polar column any of the above ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Ideal for ionic species and large molecules Greater sensitivity and reusable columns All of these Sample recovery Ideal for ionic species and large molecules Greater sensitivity and reusable columns All of these Sample recovery ANSWER DOWNLOAD EXAMIANS APP
HPLC An isocratic elution in HPLC is one in which the composition of the solvent changes in a series of steps remains constant changes continuously none of these changes in a series of steps remains constant changes continuously none of these ANSWER DOWNLOAD EXAMIANS APP
HPLC An eluotropic series is a measure of the solvent adsorption energy ranks column packing material by their relative abilities to retain solutes on the column ranks solvents by their relative abilities to displace solutes from a given absorbent None of these is a measure of the solvent adsorption energy ranks column packing material by their relative abilities to retain solutes on the column ranks solvents by their relative abilities to displace solutes from a given absorbent None of these ANSWER DOWNLOAD EXAMIANS APP
HPLC A gradient elution in HPLC is one in which the composition of the solvent is changed continuously or in a series of steps remains constant both (a) and (b) None of these is changed continuously or in a series of steps remains constant both (a) and (b) None of these ANSWER DOWNLOAD EXAMIANS APP
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