Gas Chromatography Helium is generally preferred as carrier gas over nitrogen and hydrogen because it has a lower viscosity it doubles up as a party gas for balloons and funny voices all of above it is inert it has a lower viscosity it doubles up as a party gas for balloons and funny voices all of above it is inert ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks The maximum number of different species which a column can separate simultaneously ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Headspace analysis is carried out in order to analyse volatile compounds from solid or liquid samples determine non-volatiles determine the psychological state of the tutor analyse the column contents ahead of the sample analyse volatile compounds from solid or liquid samples determine non-volatiles determine the psychological state of the tutor analyse the column contents ahead of the sample ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? Field ionisation detector All of these Thermal conductivity detector Electron capture detector Field ionisation detector All of these Thermal conductivity detector Electron capture detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Split injection is carried out by None of these splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject at the same time through parallel ports None of these splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject at the same time through parallel ports ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to All of these reduce polarity of the analytes increase volatility of the analytes increase the detector response All of these reduce polarity of the analytes increase volatility of the analytes increase the detector response ANSWER DOWNLOAD EXAMIANS APP