Gas Chromatography Which of the following detectors give mass flow-dependent signals? Electron capture detector Thermal conductivity detector All of these Field ionisation detector Electron capture detector Thermal conductivity detector All of these Field ionisation detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following is not used for detection in GC? NMR Electrical conductivity Infrared spectroscopy Flame ionisation NMR Electrical conductivity Infrared spectroscopy Flame ionisation 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
Gas Chromatography In column switching chromatography compounds trapped on one column are eluted to another column the flow to the column is switched on and off repeatedly any of the above one column is removed and replaced by another compounds trapped on one column are eluted to another column the flow to the column is switched on and off repeatedly any of the above one column is removed and replaced by another ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? All of these The velocity of the mobile phase The migration rate of an analyte through a column The distribution of an analyte between the stationary and the mobile phase All of these The velocity of the mobile phase The migration rate of an analyte through a column The distribution of an analyte between the stationary and the mobile phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum mobile phase flow rate Optimum column length Optimum column temperature The selectivity factor Optimum mobile phase flow rate Optimum column length Optimum column temperature The selectivity factor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS