HPLC Which can be used as a mobile phase in HPLC applications? Any compound with non-solubility in liquid Any compound with solubility in liquid Any compound with limited solubility in liquid Any of the above Any compound with non-solubility in liquid Any compound with solubility in liquid Any compound with limited solubility in liquid Any of the above ANSWER DOWNLOAD EXAMIANS APP
HPLC An isocratic elution in HPLC is one in which the composition of the solvent none of these changes in a series of steps changes continuously remains constant none of these changes in a series of steps changes continuously remains constant ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following statements is true for a refractive index detector in HPLC? 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 It does not respond to many solutes none of above It can only be used for isocratic elutions ANSWER DOWNLOAD EXAMIANS APP
HPLC Column efficiency is measured in terms of number of plates which is inversely related to the square 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 cube root of the peak width inversely related to the square 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 cube root of the peak width ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Sample recovery All of these 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 ANSWER DOWNLOAD EXAMIANS APP
HPLC An eluotropic series 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 is a measure of the solvent adsorption energy ANSWER DOWNLOAD EXAMIANS APP
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