Gas Chromatography Which of the following are not used as stationary phases in a GC column? Polysiloxanes None are used as stationary phases Cyclodextrins Silica Polysiloxanes None are used as stationary phases Cyclodextrins Silica ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample injection is considered successful if the sample is spread evenly along the column the sample is concentrated at the start of the column all of the sample in the injector has been added to the column the sample is homogenously spread along the column the sample is spread evenly along the column the sample is concentrated at the start of the column all of the sample in the injector has been added to the column the sample is homogenously spread along the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Helium is generally preferred as carrier gas over nitrogen and hydrogen because all of above it is inert it doubles up as a party gas for balloons and funny voices it has a lower viscosity all of above it is inert it doubles up as a party gas for balloons and funny voices it has a lower viscosity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? All of these Field ionisation detector Thermal conductivity detector Electron capture detector All of these Field ionisation detector Thermal conductivity detector Electron capture detector 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 Derivatisation of a sample is carried out to 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 reduce polarity of the analytes increase the detector response ANSWER DOWNLOAD EXAMIANS APP
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