Gas Chromatography What does the retention factor, k', describe? The migration rate of an analyte through a column The velocity of the mobile phase All of these The distribution of an analyte between the stationary and the mobile phase The migration rate of an analyte through a column The velocity of the mobile phase All of these The distribution of an analyte between the stationary and the mobile phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? Cyclodextrins None are used as stationary phases Polysiloxanes Silica Cyclodextrins None are used as stationary phases Polysiloxanes Silica ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? All of these Electron capture detector Field ionisation detector Thermal conductivity detector All of these Electron capture detector Field ionisation detector Thermal conductivity detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Doubling the column's length increases resolution by a factor of (2)0.5 2 3 4 (2)0.5 2 3 4 ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample retention in the column is measured by retention factor all of these retention index retention time retention factor all of these retention index retention time ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to All of these increase the detector response increase volatility of the analytes reduce polarity of the analytes All of these increase the detector response increase volatility of the analytes reduce polarity of the analytes ANSWER DOWNLOAD EXAMIANS APP
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