Gas Chromatography What does the selectivity factor describe? The maximum number of different species which a column can separate simultaneously The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following is not used for detection in GC? Infrared spectroscopy Flame ionisation NMR Electrical conductivity Infrared spectroscopy Flame ionisation NMR Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography A retention gap is placed between the injector and the front of the column to retain the sample and release it gradually to the column All of these retain contaminants and prevent them from reaching the column prevent backflush of the injected solution retain the sample and release it gradually to the column All of these retain contaminants and prevent them from reaching the column prevent backflush of the injected solution ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? Electron capture detector Field ionisation detector Thermal conductivity detector All of these Electron capture detector Field ionisation detector Thermal conductivity detector All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample retention in the column is measured by retention index retention factor all of these retention time retention index retention factor all of these retention time ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Resolution is proportional to the square root of the number of theoretical plates in a column number of theoretical plates in a column cube root of the number of theoretical plates in a column square of the number of theoretical plates in a column square root of the number of theoretical plates in a column number of theoretical plates in a column cube root of the number of theoretical plates in a column square of the number of theoretical plates in a column ANSWER DOWNLOAD EXAMIANS APP
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