Gas Chromatography Derivatisation of a sample is carried out to reduce polarity of the analytes increase the detector response All of these increase volatility of the analytes reduce polarity of the analytes increase the detector response All of these increase volatility of the analytes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography In column switching chromatography the flow to the column is switched on and off repeatedly one column is removed and replaced by another any of the above compounds trapped on one column are eluted to another column the flow to the column is switched on and off repeatedly one column is removed and replaced by another any of the above compounds trapped on one column are eluted to another column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What is the typical internal diameter of fused silica capillary columns? 0.2-0.3 mm 1.0-2.0 mm 0.3-0.5mm 0.5-1.0 mm 0.2-0.3 mm 1.0-2.0 mm 0.3-0.5mm 0.5-1.0 mm ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Headspace analysis is carried out in order to analyse volatile compounds from solid or liquid samples determine the psychological state of the tutor analyse the column contents ahead of the sample determine non-volatiles analyse volatile compounds from solid or liquid samples determine the psychological state of the tutor analyse the column contents ahead of the sample determine non-volatiles ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following is not used for detection in GC? Electrical conductivity NMR Flame ionisation Infrared spectroscopy Electrical conductivity NMR Flame ionisation Infrared spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample retention in the column is measured by retention index retention factor retention time all of these retention index retention factor retention time all of these ANSWER DOWNLOAD EXAMIANS APP
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