HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Greater sensitivity and reusable columns Ideal for ionic species and large molecules All of these Sample recovery Greater sensitivity and reusable columns Ideal for ionic species and large molecules All of these Sample recovery ANSWER DOWNLOAD EXAMIANS APP
HPLC Void volume refers to the total volume of eluent in the column the remainder being taken up by the packing material 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 total volume of eluent in the column the remainder being taken up by the packing material 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 HPLC methods include ion exchange and size exclusion chromatography All of these liquid/solid (adsorption) chromatography liquid/liquid (partition) chromatography ion exchange and size exclusion chromatography All of these liquid/solid (adsorption) chromatography liquid/liquid (partition) chromatography ANSWER DOWNLOAD EXAMIANS APP
HPLC An isocratic elution in HPLC is one in which the composition of the solvent remains constant changes continuously none of these changes in a series of steps remains constant changes continuously none of these changes in a series of steps 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 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 ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following statements is true for a refractive index detector in HPLC? It does not respond to many solutes none of above It can only be used for isocratic elutions It is more sensitive than a UV detector It does not respond to many solutes none of above It can only be used for isocratic elutions It is more sensitive than a UV detector ANSWER DOWNLOAD EXAMIANS APP
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