HPLC Void volume refers to the 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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
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 Sample recovery All of these Greater sensitivity and reusable columns Ideal for ionic species and large molecules Sample recovery All of these ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following statements is true for a refractive index detector in HPLC? none of above It is more sensitive than a UV detector It does not respond to many solutes It can only be used for isocratic elutions none of above It is more sensitive than a UV detector It does not respond to many solutes It can only be used for isocratic elutions ANSWER DOWNLOAD EXAMIANS APP
HPLC Which can be used as a mobile phase in HPLC applications? Any of the above Any compound with limited solubility in liquid Any compound with solubility in liquid Any compound with non-solubility in liquid Any of the above Any compound with limited solubility in liquid Any compound with solubility in liquid Any compound with non-solubility in liquid ANSWER DOWNLOAD EXAMIANS APP
HPLC A gradient elution in HPLC is one in which the composition of the solvent 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 is changed continuously or in a series of steps ANSWER DOWNLOAD EXAMIANS APP
HPLC An isocratic elution in HPLC is one in which the composition of the solvent changes continuously changes in a series of steps none of these remains constant changes continuously changes in a series of steps none of these remains constant ANSWER DOWNLOAD EXAMIANS APP
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