HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 10 and 50 A° 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° 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
HPLC An isocratic elution in HPLC is one in which the composition of the solvent remains constant changes in a series of steps changes continuously none of these remains constant changes in a series of steps changes continuously none of these ANSWER DOWNLOAD EXAMIANS APP
HPLC Void volume refers to the the volume of the column between the point at which solvents are mixed and the beginning of the column the time required for the gradient to reach the column total volume of eluent in the column the remainder being taken up by the packing material the volume of solvent contained in a liquid chromatographic column the volume of the column between the point at which solvents are mixed and the beginning of the column the time required for the gradient to reach the column total volume of eluent in the column the remainder being taken up by the packing material the volume of solvent contained in a liquid chromatographic column ANSWER DOWNLOAD EXAMIANS APP
HPLC An eluotropic series ranks solvents by their relative abilities to displace solutes from a given absorbent None of these ranks column packing material by their relative abilities to retain solutes on the column is a measure of the solvent adsorption energy ranks solvents by their relative abilities to displace solutes from a given absorbent None of these ranks column packing material by their relative abilities to retain solutes on the column is a measure of the solvent adsorption energy ANSWER DOWNLOAD EXAMIANS APP
HPLC Which can be used as a mobile phase in HPLC applications? Any compound with limited solubility in liquid Any of the above Any compound with solubility in liquid Any compound with non-solubility in liquid Any compound with limited solubility in liquid Any of the above Any compound with solubility in liquid Any compound with non-solubility in liquid ANSWER DOWNLOAD EXAMIANS APP
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