HPLC A gradient elution in HPLC is one in which the composition of the solvent both (a) and (b) is changed continuously or in a series of steps None of these remains constant both (a) and (b) is changed continuously or in a series of steps None of these remains constant ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? All of these Ideal for ionic species and large molecules Sample recovery Greater sensitivity and reusable columns All of these Ideal for ionic species and large molecules Sample recovery Greater sensitivity and reusable columns ANSWER DOWNLOAD EXAMIANS APP
HPLC HPLC methods include liquid/liquid (partition) chromatography All of these liquid/solid (adsorption) chromatography ion exchange and size exclusion chromatography liquid/liquid (partition) chromatography All of these liquid/solid (adsorption) chromatography ion exchange and size exclusion chromatography ANSWER DOWNLOAD EXAMIANS APP
HPLC Which can be used as a mobile phase in HPLC applications? Any compound with non-solubility in liquid Any compound with limited solubility in liquid Any compound with solubility in liquid Any of the above Any compound with non-solubility in liquid Any compound with limited solubility in liquid Any compound with solubility in liquid Any of the above ANSWER DOWNLOAD EXAMIANS APP
HPLC Dwell volume is defined as none of these 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 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 ANSWER DOWNLOAD EXAMIANS APP
HPLC Column efficiency is measured in terms of number of plates which is inversely related to the cube root 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 square of the peak width inversely related to the cube root 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 square of the peak width ANSWER DOWNLOAD EXAMIANS APP
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